arXiv - PHYS - High Energy Physics - Experiment最新文献

{"title":"Hadronic cross section measurements with the DAMPE space mission using 20GeV-10TeV cosmic-ray protons and $^4$He","authors":"F. Alemanno, Q. An, P. Azzarello, F. C. T. Barbato, P. Bernardini, X. J. Bi, I. Cagnoli, M. S. Cai, E. Casilli, E. Catanzani, J. Chang, D. Y. Chen, J. L. Chen, Z. F. Chen, P. Coppin, M. Y. Cui, T. S. Cui, Y. X. Cui, H. T. Dai, A. De Benedittis, I. De Mitri, F. de Palma, A. Di Giovanni, Q. Ding, T. K. Dong, Z. X. Dong, G. Donvito, D. Droz, J. L. Duan, K. K. Duan, R. R. Fan, Y. Z. Fan, F. Fang, K. Fang, C. Q. Feng, L. Feng, J. M. Frieden, P. Fusco, M. Gao, F. Gargano, K. Gong, Y. Z. Gong, D. Y. Guo, J. H. Guo, S. X. Han, Y. M. Hu, G. S. Huang, X. Y. Huang, Y. Y. Huang, M. Ionica, L. Y. Jiang, Y. Z. Jiang, W. Jiang, J. Kong, A. Kotenko, D. Kyratzis, S. J. Lei, W. H. Li, W. L. Li, X. Li, X. Q. Li, Y. M. Liang, C. M. Liu, H. Liu, J. Liu, S. B. Liu, Y. Liu, F. Loparco, C. N. Luo, M. Ma, P. X. Ma, T. Ma, X. Y. Ma, G. Marsella, M. N. Mazziotta, D. Mo, X. Y. Niu, X. Pan, A. Parenti, W. X. Peng, X. Y. Peng, C. Perrina, E. Putti-Garcia, R. Qiao, J. N. Rao, A. Ruina, R. Sarkar, P. Savina, A. Serpolla, Z. Shangguan, W. H. Shen, Z. Q. Shen, Z. T. Shen, L. Silveri, J. X. Song, M. Stolpovskiy, H. Su, M. Su, H. R. Sun, Z. Y. Sun, A. Surdo, X. J. Teng, A. Tykhonov, J. Z. Wang, L. G. Wang, S. Wang, S. X. Wang, X. L. Wang, Y. Wang, Y. F. Wang, Y. Z. Wang, Z. M. Wang, D. M. Wei, J. J. Wei, Y. F. Wei, D. Wu, J. Wu, S. S. Wu, X. Wu, Z. Q. Xia, H. T. Xu, J. Xu, Z. H. Xu, Z. L. Xu, E. H. Xu, Z. Z. Xu, G. F. Xue, H. B. Yang, P. Yang, Y. Q. Yang, H. J. Yao, Y. H. Yu, G. W. Yuan, Q. Yuan, C. Yue, J. J. Zang, S. X. Zhang, W. Z. Zhang, Yan Zhang, Yi Zhang, Y. J. Zhang, Y. L. Zhang, Y. P. Zhang, Y. Q. Zhang, Z. Zhang, Z. Y. Zhang, C. Zhao, H. Y. Zhao, X. F. Zhao, C. Y. Zhou, Y. Zhu","doi":"arxiv-2408.17224","DOIUrl":"https://doi.org/arxiv-2408.17224","url":null,"abstract":"Precise direct cosmic-ray (CR) measurements provide an important probe to\u0000study the energetic particle sources in our Galaxy, and the interstellar\u0000environment through which these particles propagate. Uncertainties on hadronic\u0000models, ion-nucleon cross sections in particular, are currently the limiting\u0000factor towards obtaining more accurate CR ion flux measurements with\u0000calorimetric space-based experiments. We present an energy-dependent\u0000measurement of the inelastic cross section of protons and helium-4 nuclei\u0000(alpha particles) on a Bi$_4$Ge$_3$O$_{12}$ target, using 88 months of data\u0000collected by the DAMPE space mission. The kinetic energy range per nucleon of\u0000the measurement points ranges from 18 GeV to 9 TeV for protons, and from 5\u0000GeV/n to 3 TeV/n for helium-4 nuclei. Our results lead to a significant\u0000improvement of the CR flux normalisation. In the case of helium-4, these\u0000results correspond to the first cross section measurements on a heavy target\u0000material at energies above 10 GeV/n.","PeriodicalId":501181,"journal":{"name":"arXiv - PHYS - High Energy Physics - Experiment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142201408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Search for dark matter produced in association with a pair of bottom quarks in proton-proton collisions at $sqrt{s}$ = 13 TeV","authors":"CMS Collaboration","doi":"arxiv-2408.17336","DOIUrl":"https://doi.org/arxiv-2408.17336","url":null,"abstract":"A search for dark matter (DM) particles produced in association with bottom\u0000quarks is presented. The analysis uses proton-proton collision data at a\u0000center-of-mass energy of $sqrt{s}$ = 13 TeV, corresponding to an integrated\u0000luminosity of 138 fb$^{-1}$. The search is performed in the final state with\u0000large missing transverse momentum and a pair of jets originating from bottom\u0000quarks. No significant excess of data is observed with respect to the standard\u0000model expectation. Results are interpreted in the context of a type-II\u0000two-Higgs-doublet model with an additional light pseudoscalar (2HDM+a). An\u0000upper limit is set on the mass of the lighter pseudoscalar, excluding masses up\u0000to 260 GeV at 95% confidence level. This is the first search at the LHC to\u0000probe DM produced in association with two nonresonant bottom quarks in the\u00002HDM+a model. Sensitivity to the parameter space with the ratio of the vacuum\u0000expectation values of the two Higgs doublets, $tanbeta$, greater than 15 is\u0000achieved, capitalizing on the enhancement of couplings between pseudoscalars\u0000and bottom quarks with high $tanbeta$.","PeriodicalId":501181,"journal":{"name":"arXiv - PHYS - High Energy Physics - Experiment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142201302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Shock-driven amorphization and melt in Fe$_2$O$_3$","authors":"Céline Crépisson, Alexis Amouretti, Marion Harmand, Chrystèle Sanloup, Patrick Heighway, Sam Azadi, David McGonegle, Thomas Campbell, David Alexander Chin, Ethan Smith, Linda Hansen, Alessandro Forte, Thomas Gawne, Hae Ja Lee, Bob Nagler, YuanFeng Shi, Guillaume Fiquet, François Guyot, Mikako Makita, Alessandra Benuzzi-Mounaix, Tommaso Vinci, Kohei Miyanishi, Norimasa Ozaki, Tatiana Pikuz, Hirotaka Nakamura, Keiichi Sueda, Toshinori Yabuuchi, Makina Yabashi, Justin S. Wark, Danae N. Polsin, Sam M. Vinko","doi":"arxiv-2408.17204","DOIUrl":"https://doi.org/arxiv-2408.17204","url":null,"abstract":"We present measurements on Fe$_2$O$_3$ amorphization and melt under\u0000laser-driven shock compression up to 209(10) GPa via time-resolved in situ\u0000x-ray diffraction. At 122(3) GPa, a diffuse signal is observed indicating the\u0000presence of a non-crystalline phase. Structure factors have been extracted up\u0000to 182(6) GPa showing the presence of two well-defined peaks. A rapid change in\u0000the intensity ratio of the two peaks is identified between 145(10) and 151(10)\u0000GPa, indicative of a phase change. Present DFT+$U$ calculations of temperatures\u0000along Fe$_2$O$_3$ Hugoniot are in agreement with SESAME 7440 and indicate\u0000relatively low temperatures, below 2000 K, up to 150 GPa. The non-crystalline\u0000diffuse scattering is thus consistent with the - as yet unreported - shock\u0000amorphization of Fe$_2$O$_3$ between 122(3) and 145(10) GPa, followed by an\u0000amorphous-to-liquid transition above 151(10) GPa. Upon release, a\u0000non-crystalline phase is observed alongside crystalline $alpha$-Fe$_2$O$_3$.\u0000The extracted structure factor and pair distribution function of this release\u0000phase resemble those reported for Fe$_2$O$_3$ melt at ambient pressure.","PeriodicalId":501181,"journal":{"name":"arXiv - PHYS - High Energy Physics - Experiment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142201308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Search for $tbar{t}H/A rightarrow tbar{t}tbar{t}$ production in proton-proton collisions at $sqrt{s}=13$ TeV with the ATLAS detector","authors":"ATLAS Collaboration","doi":"arxiv-2408.17164","DOIUrl":"https://doi.org/arxiv-2408.17164","url":null,"abstract":"A search is presented for a heavy scalar ($H$) or pseudo-scalar ($A$)\u0000predicted by the two-Higgs-doublet models, where the $H/A$ is produced in\u0000association with a top-quark pair ($tbar{t}H/A$), and with the $H/A$ decaying\u0000into a $tbar{t}$ pair. Events are selected requiring exactly one or two\u0000opposite-charge electrons or muons. Data-driven corrections are applied to\u0000improve the modelling of the $tbar{t}$+jets background in the regime with high\u0000jet and $b$-jet multiplicities. These include a novel multi-dimensional\u0000kinematic reweighting based on a neural network trained using data and\u0000simulations. An $H/A$-mass parameterised graph neural network is trained to\u0000optimise the signal-to-background discrimination. In combination with the\u0000previous search performed by the ATLAS Collaboration in the multilepton final\u0000state, the observed upper limits on the $tbar{t}H/A rightarrow\u0000tbar{t}tbar{t}$ production cross-section at 95% confidence level range\u0000between 14 fb and 5.0 fb for an $H/A$ with mass between 400 GeV and 1000 GeV,\u0000respectively. Assuming that both the $H$ and $A$ contribute to the\u0000$tbar{t}tbar{t}$ cross-section, $tanbeta$ values below 1.7 or 0.7 are\u0000excluded for a mass of 400 GeV or 1000 GeV, respectively. The results are also\u0000used to constrain a model predicting the pair production of a colour-octet\u0000scalar, with the scalar decaying into a $tbar{t}$ pair.","PeriodicalId":501181,"journal":{"name":"arXiv - PHYS - High Energy Physics - Experiment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142201405","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Upgrading the existing Haloscope-type detector for sensitive axion detection","authors":"L. Gao, H. Zheng, X. N. Feng, L. B. Zhao, L. F. Wei","doi":"arxiv-2408.16229","DOIUrl":"https://doi.org/arxiv-2408.16229","url":null,"abstract":"Haloscope is one of the typical installations to detect the electromagnetic\u0000responses (EMRs) of axion field in radio-frequency (rf) band. Given what the\u0000detection by the existing Haloscope-type detector (HTD) biased only by a high\u0000stationary magnetic field, is just the second axion-photon energy converted\u0000effect and thus the detectable signal is still significantly weak, here we\u0000propose a feasible approach to upgrade the existing HTD by additionally\u0000applying a transverse rf modulated magnetic field for generating the\u0000first-order axion-photon energy converted signal. Accordingly, we argue that\u0000the detection sensitivity of the upgrading HTD (UHTD) could be enhanced\u0000feasibly by a few orders of magnitude, compared with those achieved by the\u0000existing HTDs. The feasibility of the proposed UHTD is also discussed.","PeriodicalId":501181,"journal":{"name":"arXiv - PHYS - High Energy Physics - Experiment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142201435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Model-independent determination of the strong-phase difference between $D^0$ and $bar{D}^0 to π^+π^-π^+π^-$ decays","authors":"BESIII Collaboration, M. Ablikim, M. N. Achasov, P. Adlarson, O. Afedulidis, X. C. Ai, R. Aliberti, A. Amoroso, Q. An, Y. Bai, O. Bakina, I. Balossino, Y. Ban, H. -R. Bao, V. Batozskaya, K. Begzsuren, N. Berger, M. Berlowski, M. Bertani, D. Bettoni, F. Bianchi, E. Bianco, A. Bortone, I. Boyko, R. A. Briere, A. Brueggemann, H. Cai, X. Cai, A. Calcaterra, G. F. Cao, N. Cao, S. A. Cetin, X. Y. Chai, J. F. Chang, G. R. Che, Y. Z. Che, G. Chelkov, C. Chen, C. H. Chen, Chao Chen, G. Chen, H. S. Chen, H. Y. Chen, M. L. Chen, S. J. Chen, S. L. Chen, S. M. Chen, T. Chen, X. R. Chen, X. T. Chen, Y. B. Chen, Y. Q. Chen, Z. J. Chen, Z. Y. Chen, S. K. Choi, G. Cibinetto, F. Cossio, J. J. Cui, H. L. Dai, J. P. Dai, A. Dbeyssi, R. E. de Boer, D. Dedovich, C. Q. Deng, Z. Y. Deng, A. Denig, I. Denysenko, M. Destefanis, F. De Mori, B. Ding, X. X. Ding, Y. Ding, Y. Ding, J. Dong, L. Y. Dong, M. Y. Dong, X. Dong, M. C. Du, S. X. Du, Y. Y. Duan, Z. H. Duan, P. Egorov, Y. H. Fan, J. Fang, J. Fang, S. S. Fang, W. X. Fang, Y. Fang, Y. Q. Fang, R. Farinelli, L. Fava, F. Feldbauer, G. Felici, C. Q. Feng, J. H. Feng, Y. T. Feng, M. Fritsch, C. D. Fu, J. L. Fu, Y. W. Fu, H. Gao, X. B. Gao, Y. N. Gao, Yang Gao, S. Garbolino, I. Garzia, L. Ge, P. T. Ge, Z. W. Ge, C. Geng, E. M. Gersabeck, A. Gilman, K. Goetzen, L. Gong, W. X. Gong, W. Gradl, S. Gramigna, M. Greco, M. H. Gu, Y. T. Gu, C. Y. Guan, A. Q. Guo, L. B. Guo, M. J. Guo, R. P. Guo, Y. P. Guo, A. Guskov, J. Gutierrez, K. L. Han, T. T. Han, F. Hanisch, X. Q. Hao, F. A. Harris, K. K. He, K. L. He, F. H. Heinsius, C. H. Heinz, Y. K. Heng, C. Herold, T. Holtmann, P. C. Hong, G. Y. Hou, X. T. Hou, Y. R. Hou, Z. L. Hou, B. Y. Hu, H. M. Hu, J. F. Hu, S. L. Hu, T. Hu, Y. Hu, G. S. Huang, K. X. Huang, L. Q. Huang, X. T. Huang, Y. P. Huang, Y. S. Huang, T. Hussain, F. Hölzken, N. Hüsken, N. in der Wiesche, J. Jackson, S. Janchiv, J. H. Jeong, Q. Ji, Q. P. Ji, W. Ji, X. B. Ji, X. L. Ji, Y. Y. Ji, X. Q. Jia, Z. K. Jia, D. Jiang, H. B. Jiang, P. C. Jiang, S. S. Jiang, T. J. Jiang, X. S. Jiang, Y. Jiang, J. B. Jiao, J. K. Jiao, Z. Jiao, S. Jin, Y. Jin, M. Q. Jing, X. M. Jing, T. Johansson, S. Kabana, N. Kalantar-Nayestanaki, X. L. Kang, X. S. Kang, M. Kavatsyuk, B. C. Ke, V. Khachatryan, A. Khoukaz, R. Kiuchi, O. B. Kolcu, B. Kopf, M. Kuessner, X. Kui, N. Kumar, A. Kupsc, W. Kühn, L. Lavezzi, T. T. Lei, Z. H. Lei, M. Lellmann, T. Lenz, C. Li, C. Li, C. H. Li, Cheng Li, D. M. Li, F. Li, G. Li, H. B. Li, H. J. Li, H. N. Li, Hui Li, J. R. Li, J. S. Li, K. Li, K. L. Li, L. J. Li, L. K. Li, Lei Li, M. H. Li, P. R. Li, Q. M. Li, Q. X. Li, R. Li, S. X. Li, T. Li, W. D. Li, W. G. Li, X. Li, X. H. Li, X. L. Li, X. Y. Li, X. Z. Li, Y. G. Li, Z. J. Li, Z. Y. Li, C. Liang, H. Liang, H. Liang, Y. F. Liang, Y. T. Liang, G. R. Liao, Y. P. Liao, J. Libby, A. Limphirat, C. C. Lin, D. X. Lin, T. Lin, B. J. Liu, B. X. Liu, C. Liu, C. X. Liu, F. Liu, F. H. Liu, Feng Liu, G. M. Liu, H. Liu, H. B. Liu, H. H. Liu, H. M. Liu, Huihui Liu, J. B. Liu, J. Y. Liu, K. Liu, K. Y. Liu, Ke Liu, L. Liu, L. C. Liu, Lu Liu, M. H. Liu, P. L. Liu, Q. Liu, S. B. Liu, T. Liu, W. K. Liu, W. M. Liu, X. Liu, X. Liu, Y. Liu, Y. Liu, Y. B. Liu, Z. A. Liu, Z. D. Liu, Z. Q. Liu, X. C. Lou, F. X. Lu, H. J. Lu, J. G. Lu, X. L. Lu, Y. Lu, Y. P. Lu, Z. H. Lu, C. L. Luo, J. R. Luo, M. X. Luo, T. Luo, X. L. Luo, X. R. Lyu, Y. F. Lyu, F. C. Ma, H. Ma, H. L. Ma, J. L. Ma, L. L. Ma, L. R. Ma, M. M. Ma, Q. M. Ma, R. Q. Ma, T. Ma, X. T. Ma, X. Y. Ma, Y. M. Ma, F. E. Maas, I. MacKay, M. Maggiora, S. Malde, Y. J. Mao, Z. P. Mao, S. Marcello, Z. X. Meng, J. G. Messchendorp, G. Mezzadri, H. Miao, T. J. Min, R. E. Mitchell, X. H. Mo, B. Moses, N. Yu. Muchnoi, J. Muskalla, Y. Nefedov, F. Nerling, L. S. Nie, I. B. Nikolaev, Z. Ning, S. Nisar, Q. L. Niu, W. D. Niu, Y. Niu, S. L. Olsen, S. L. Olsen, Q. Ouyang, S. Pacetti, X. Pan, Y. Pan, A. Pathak, Y. P. Pei, M. Pelizaeus, H. P. Peng, Y. Y. Peng, K. Peters, J. L. Ping, R. G. Ping, S. Plura, V. Prasad, F. Z. Qi, H. Qi, H. R. Qi, M. Qi, T. Y. Qi, S. Qian, W. B. Qian, C. F. Qiao, X. K. Qiao, J. J. Qin, L. Q. Qin, L. Y. Qin, X. P. Qin, X. S. Qin, Z. H. Qin, J. F. Qiu, Z. H. Qu, C. F. Redmer, K. J. Ren, A. Rivetti, M. Rolo, G. Rong, Ch. Rosner, M. Q. Ruan, S. N. Ruan, N. Salone, A. Sarantsev, Y. Schelhaas, K. Schoenning, M. Scodeggio, K. Y. Shan, W. Shan, X. Y. Shan, Z. J. Shang, J. F. Shangguan, L. G. Shao, M. Shao, C. P. Shen, H. F. Shen, W. H. Shen, X. Y. Shen, B. A. Shi, H. Shi, H. C. Shi, J. L. Shi, J. Y. Shi, Q. Q. Shi, S. Y. Shi, X. Shi, X. D. Shi, J. J. Song, T. Z. Song, W. M. Song, Y. J. Song, Y. X. Song, S. Sosio, S. Spataro, F. Stieler, S. S Su, Y. J. Su, G. B. Sun, G. X. Sun, H. Sun, H. K. Sun, J. F. Sun, K. Sun, L. Sun, S. S. Sun, T. Sun, W. Y. Sun, Y. Sun, Y. J. Sun, Y. Z. Sun, Z. Q. Sun, Z. T. Sun, C. J. Tang, G. Y. Tang, J. Tang, M. Tang, Y. A. Tang, L. Y. Tao, Q. T. Tao, M. Tat, J. X. Teng, V. Thoren, W. H. Tian, Y. Tian, Z. F. Tian, I. Uman, Y. Wan, S. J. Wang, B. Wang, B. L. Wang, Bo Wang, D. Y. Wang, F. Wang, H. J. Wang, J. J. Wang, J. P. Wang, K. Wang, L. L. Wang, M. Wang, N. Y. Wang, S. Wang, S. Wang, T. Wang, T. J. Wang, W. Wang, W. Wang, W. P. Wang, X. Wang, X. F. Wang, X. J. Wang, X. L. Wang, X. N. Wang, Y. Wang, Y. D. Wang, Y. F. Wang, Y. L. Wang, Y. N. Wang, Y. Q. Wang, Yaqian Wang, Yi Wang, Z. Wang, Z. L. Wang, Z. Y. Wang, Ziyi Wang, D. H. Wei, F. Weidner, S. P. Wen, Y. R. Wen, U. Wiedner, G. Wilkinson, M. Wolke, L. Wollenberg, C. Wu, J. F. Wu, L. H. Wu, L. J. Wu, X. Wu, X. H. Wu, Y. Wu, Y. H. Wu, Y. J. Wu, Z. Wu, L. Xia, X. M. Xian, B. H. Xiang, T. Xiang, D. Xiao, G. Y. Xiao, S. Y. Xiao, Y. L. Xiao, Z. J. Xiao, C. Xie, X. H. Xie, Y. Xie, Y. G. Xie, Y. H. Xie, Z. P. Xie, T. Y. Xing, C. F. Xu, C. J. Xu, G. F. Xu, H. Y. Xu, M. Xu, Q. J. Xu, Q. N. Xu, W. Xu, W. L. Xu, X. P. Xu, Y. Xu, Y. C. Xu, Z. S. Xu, F. Yan, L. Yan, W. B. Yan, W. C. Yan, X. Q. Yan, H. J. Yang, H. L. Yang, H. X. Yang, J. H. Yang, T. Yang, Y. Yang, Y. F. Yang, Y. F. Yang, Y. X. Yang, Z. W. Yang, Z. P. Yao, M. Ye, M. H. Ye, J. H. Yin, Junhao Yin, Z. Y. You, B. X. Yu, C. X. Yu, G. Yu, J. S. Yu, M. C. Yu, T. Yu, X. D. Yu, Y. C. Yu, C. Z. Yuan, J. Yuan, J. Yuan, L. Yuan, S. C. Yuan, Y. Yuan, Z. Y. Yuan, C. X. Yue, A. A. Zafar, F. R. Zeng, S. H. Zeng, X. Zeng, Y. Zeng, Y. J. Zeng, Y. J. Zeng, X. Y. Zhai, Y. C. Zhai, Y. H. Zhan, A. Q. Zhang, B. L. Zhang, B. X. Zhang, D. H. Zhang, G. Y. Zhang, H. Zhang, H. Zhang, H. C. Zhang, H. H. Zhang, H. H. Zhang, H. Q. Zhang, H. R. Zhang, H. Y. Zhang, J. Zhang, J. Zhang, J. J. Zhang, J. L. Zhang, J. Q. Zhang, J. S. Zhang, J. W. Zhang, J. X. Zhang, J. Y. Zhang, J. Z. Zhang, Jianyu Zhang, L. M. Zhang, Lei Zhang, P. Zhang, Q. Y. Zhang, R. Y. Zhang, S. H. Zhang, Shulei Zhang, X. M. Zhang, X. Y Zhang, X. Y. Zhang, Y. Zhang, Y. Zhang, Y. T. Zhang, Y. H. Zhang, Y. M. Zhang, Yan Zhang, Z. D. Zhang, Z. H. Zhang, Z. L. Zhang, Z. Y. Zhang, Z. Y. Zhang, Z. Z. Zhang, G. Zhao, J. Y. Zhao, J. Z. Zhao, L. Zhao, Lei Zhao, M. G. Zhao, N. Zhao, R. P. Zhao, S. J. Zhao, Y. B. Zhao, Y. X. Zhao, Z. G. Zhao, A. Zhemchugov, B. Zheng, B. M. Zheng, J. P. Zheng, W. J. Zheng, Y. H. Zheng, B. Zhong, X. Zhong, H. Zhou, J. Y. Zhou, L. P. Zhou, S. Zhou, X. Zhou, X. K. Zhou, X. R. Zhou, X. Y. Zhou, Y. Z. Zhou, Z. C. Zhou, A. N. Zhu, J. Zhu, K. Zhu, K. J. Zhu, K. S. Zhu, L. Zhu, L. X. Zhu, S. H. Zhu, T. J. Zhu, W. D. Zhu, Y. C. Zhu, Z. A. Zhu, J. H. Zou, J. Zu","doi":"arxiv-2408.16279","DOIUrl":"https://doi.org/arxiv-2408.16279","url":null,"abstract":"Measurements of the strong-phase difference between $D^0$ and\u0000$bar{D}^0topi^+pi^-pi^+pi^-$ are performed in bins of phase space. The\u0000study exploits a sample of quantum-correlated $Dbar{D}$ mesons collected by\u0000the BESIII experiment in $e^+e^-$ collisions at a center-of-mass energy of\u00003.773~GeV, corresponding to an integrated luminosity of 2.93~fb$^{-1}$. Here,\u0000$D$ denotes a neutral charm meson in a superposition of flavor eigenstates. The\u0000reported results are valuable for measurements of the $C!P$-violating phase\u0000$gamma$ (also denoted $phi_3$) in $B^pm to DK^pm$, $D to\u0000pi^+pi^-pi^+pi^-$ decays, and the binning schemes are designed to provide\u0000good statistical sensitivity to this parameter. The expected uncertainty on\u0000$gamma$ arising from the precision of the strong-phase measurements, when\u0000applied to very large samples of $B$-meson decays, is around $1.5^circ$ or\u0000$2^circ$, depending on the binning scheme. The binned strong-phase parameters\u0000are combined to give a value of $F_+^{4pi} = 0.746 pm 0.010 pm 0.004$ for\u0000the $C!P$-even fraction of $D^0 to pi^+pi^-pi^+pi^-$ decays, which is\u0000around 30% more precise than the previous best measurement of this quantity.","PeriodicalId":501181,"journal":{"name":"arXiv - PHYS - High Energy Physics - Experiment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142201410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study of the rare decay $J/ψto μ^+μ^-μ^+μ^-$","authors":"LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb, C. Abellan Beteta, F. Abudinén, T. Ackernley, A. A. Adefisoye, B. Adeva, M. Adinolfi, P. Adlarson, C. Agapopoulou, C. A. Aidala, Z. Ajaltouni, S. Akar, K. Akiba, P. Albicocco, J. Albrecht, F. Alessio, M. Alexander, Z. Aliouche, P. Alvarez Cartelle, R. Amalric, S. Amato, J. L. Amey, Y. Amhis, L. An, L. Anderlini, M. Andersson, A. Andreianov, P. Andreola, M. Andreotti, D. Andreou, A. Anelli, D. Ao, F. Archilli, M. Argenton, S. Arguedas Cuendis, A. Artamonov, M. Artuso, E. Aslanides, R. Ataíde Da Silva, M. Atzeni, B. Audurier, D. Bacher, I. Bachiller Perea, S. Bachmann, M. Bachmayer, J. J. Back, P. Baladron Rodriguez, V. Balagura, W. Baldini, L. Balzani, H. Bao, J. Baptista de Souza Leite, C. Barbero Pretel, M. Barbetti, I. R. Barbosa, R. J. Barlow, M. Barnyakov, S. Barsuk, W. Barter, M. Bartolini, J. Bartz, J. M. Basels, S. Bashir, G. Bassi, B. Batsukh, P. B. Battista, A. Bay, A. Beck, M. Becker, F. Bedeschi, I. B. Bediaga, N. B. Behling, S. Belin, V. Bellee, K. Belous, I. Belov, I. Belyaev, G. Benane, G. Bencivenni, E. Ben-Haim, A. Berezhnoy, R. Bernet, S. Bernet Andres, A. Bertolin, C. Betancourt, F. Betti, J. Bex, Ia. Bezshyiko, J. Bhom, M. S. Bieker, N. V. Biesuz, P. Billoir, A. Biolchini, M. Birch, F. C. R. Bishop, A. Bitadze, A. Bizzeti, T. Blake, F. Blanc, J. E. Blank, S. Blusk, V. Bocharnikov, J. A. Boelhauve, O. Boente Garcia, T. Boettcher, A. Bohare, A. Boldyrev, C. S. Bolognani, R. Bolzonella, N. Bondar, F. Borgato, S. Borghi, M. Borsato, J. T. Borsuk, S. A. Bouchiba, M. Bovill, T. J. V. Bowcock, A. Boyer, C. Bozzi, A. Brea Rodriguez, N. Breer, J. Brodzicka, A. Brossa Gonzalo, J. Brown, D. Brundu, E. Buchanan, A. Buonaura, L. Buonincontri, A. T. Burke, C. Burr, A. Butkevich, J. S. Butter, J. Buytaert, W. Byczynski, S. Cadeddu, H. Cai, A. C. Caillet, R. Calabrese, S. Calderon Ramirez, L. Calefice, S. Cali, M. Calvi, M. Calvo Gomez, P. Camargo Magalhaes, J. I. Cambon Bouzas, P. Campana, D. H. Campora Perez, A. F. Campoverde Quezada, S. Capelli, L. Capriotti, R. Caravaca-Mora, A. Carbone, L. Carcedo Salgado, R. Cardinale, A. Cardini, P. Carniti, L. Carus, A. Casais Vidal, R. Caspary, G. Casse, J. Castro Godinez, M. Cattaneo, G. Cavallero, V. Cavallini, S. Celani, D. Cervenkov, S. Cesare, A. J. Chadwick, I. Chahrour, X. Chang, M. Charles, Ph. Charpentier, E. Chatzianagnostou, C. A. Chavez Barajas, M. Chefdeville, C. Chen, S. Chen, Z. Chen, A. Chernov, S. Chernyshenko, X. Chiotopoulos, V. Chobanova, S. Cholak, M. Chrzaszcz, A. Chubykin, V. Chulikov, P. Ciambrone, X. Cid Vidal, G. Ciezarek, P. Cifra, P. E. L. Clarke, M. Clemencic, H. V. Cliff, J. Closier, C. Cocha Toapaxi, V. Coco, J. Cogan, E. Cogneras, L. Cojocariu, P. Collins, T. Colombo, M. C. Colonna, A. Comerma-Montells, L. Congedo, A. Contu, N. Cooke, I. Corredoira, A. Correia, G. Corti, J. J. Cottee Meldrum, B. Couturier, D. C. Craik, M. Cruz Torres, E. Curras Rivera, R. Currie, C. L. Da Silva, S. Dadabaev, L. Dai, X. Dai, E. Dall'Occo, J. Dalseno, C. D'Ambrosio, J. Daniel, A. Danilina, P. d'Argent, A. Davidson, J. E. Davies, A. Davis, O. De Aguiar Francisco, C. De Angelis, F. De Benedetti, J. de Boer, K. De Bruyn, S. De Capua, M. De Cian, U. De Freitas Carneiro Da Graca, E. De Lucia, J. M. De Miranda, L. De Paula, M. De Serio, P. De Simone, F. De Vellis, J. A. de Vries, F. Debernardis, D. Decamp, V. Dedu, L. Del Buono, B. Delaney, H. -P. Dembinski, J. Deng, V. Denysenko, O. Deschamps, F. Dettori, B. Dey, P. Di Nezza, I. Diachkov, S. Didenko, S. Ding, L. Dittmann, V. Dobishuk, A. D. Docheva, C. Dong, A. M. Donohoe, F. Dordei, A. C. dos Reis, A. D. Dowling, W. Duan, P. Duda, M. W. Dudek, L. Dufour, V. Duk, P. Durante, M. M. Duras, J. M. Durham, O. D. Durmus, A. Dziurda, A. Dzyuba, S. Easo, E. Eckstein, U. Egede, A. Egorychev, V. Egorychev, S. Eisenhardt, E. Ejopu, L. Eklund, M. Elashri, J. Ellbracht, S. Ely, A. Ene, E. Epple, J. Eschle, S. Esen, T. Evans, F. Fabiano, L. N. Falcao, Y. Fan, B. Fang, L. Fantini, M. Faria, K. Farmer, D. Fazzini, L. Felkowski, M. Feng, M. Feo, A. Fernandez Casani, M. Fernandez Gomez, A. D. Fernez, F. Ferrari, F. Ferreira Rodrigues, M. Ferrillo, M. Ferro-Luzzi, S. Filippov, R. A. Fini, M. Fiorini, K. L. Fischer, D. S. Fitzgerald, C. Fitzpatrick, F. Fleuret, M. Fontana, L. F. Foreman, R. Forty, D. Foulds-Holt, M. Franco Sevilla, M. Frank, E. Franzoso, G. Frau, C. Frei, D. A. Friday, J. Fu, Q. Fuehring, Y. Fujii, T. Fulghesu, E. Gabriel, G. Galati, M. D. Galati, A. Gallas Torreira, D. Galli, S. Gambetta, M. Gandelman, P. Gandini, B. Ganie, H. Gao, R. Gao, Y. Gao, Y. Gao, Y. Gao, M. Garau, L. M. Garcia Martin, P. Garcia Moreno, J. García Pardiñas, K. G. Garg, L. Garrido, C. Gaspar, R. E. Geertsema, L. L. Gerken, E. Gersabeck, M. Gersabeck, T. Gershon, Z. Ghorbanimoghaddam, L. Giambastiani, F. I. Giasemis, V. Gibson, H. K. Giemza, A. L. Gilman, M. Giovannetti, A. Gioventù, L. Girardey, P. Gironella Gironell, C. Giugliano, M. A. Giza, E. L. Gkougkousis, F. C. Glaser, V. V. Gligorov, C. Göbel, E. Golobardes, D. Golubkov, A. Golutvin, A. Gomes, S. Gomez Fernandez, F. Goncalves Abrantes, M. Goncerz, G. Gong, J. A. Gooding, I. V. Gorelov, C. Gotti, J. P. Grabowski, L. A. Granado Cardoso, E. Graugés, E. Graverini, L. Grazette, G. Graziani, A. T. Grecu, L. M. Greeven, N. A. Grieser, L. Grillo, S. Gromov, C. Gu, M. Guarise, M. Guittiere, V. Guliaeva, P. A. Günther, A. -K. Guseinov, E. Gushchin, Y. Guz, T. Gys, K. Habermann, T. Hadavizadeh, C. Hadjivasiliou, G. Haefeli, C. Haen, J. Haimberger, M. Hajheidari, G. H. Hallett, M. M. Halvorsen, P. M. Hamilton, J. Hammerich, Q. Han, X. Han, S. Hansmann-Menzemer, L. Hao, N. Harnew, M. Hartmann, S. Hashmi, J. He, F. Hemmer, C. Henderson, R. D. L. Henderson, A. M. Hennequin, K. Hennessy, L. Henry, J. Herd, P. Herrero Gascon, J. Heuel, A. Hicheur, G. Hijano Mendizabal, D. Hill, S. E. Hollitt, J. Horswill, R. Hou, Y. Hou, N. Howarth, J. Hu, J. Hu, W. Hu, X. Hu, W. Huang, W. Hulsbergen, R. J. Hunter, M. Hushchyn, D. Hutchcroft, D. Ilin, P. Ilten, A. Inglessi, A. Iniukhin, A. Ishteev, K. Ivshin, R. Jacobsson, H. Jage, S. J. Jaimes Elles, S. Jakobsen, E. Jans, B. K. Jashal, A. Jawahery, V. Jevtic, E. Jiang, X. Jiang, Y. Jiang, Y. J. Jiang, M. John, A. John Rubesh Rajan, D. Johnson, C. R. Jones, T. P. Jones, S. Joshi, B. Jost, J. Juan Castella, N. Jurik, I. Juszczak, D. Kaminaris, S. Kandybei, M. Kane, Y. Kang, C. Kar, M. Karacson, D. Karpenkov, A. Kauniskangas, J. W. Kautz, F. Keizer, M. Kenzie, T. Ketel, B. Khanji, A. Kharisova, S. Kholodenko, G. Khreich, T. Kirn, V. S. Kirsebom, O. Kitouni, S. Klaver, N. Kleijne, K. Klimaszewski, M. R. Kmiec, S. Koliiev, L. Kolk, A. Konoplyannikov, P. Kopciewicz, P. Koppenburg, M. Korolev, I. Kostiuk, O. Kot, S. Kotriakhova, A. Kozachuk, P. Kravchenko, L. Kravchuk, M. Kreps, P. Krokovny, W. Krupa, W. Krzemien, O. K. Kshyvanskyi, J. Kubat, S. Kubis, M. Kucharczyk, V. Kudryavtsev, E. Kulikova, A. Kupsc, B. K. Kutsenko, D. Lacarrere, P. Laguarta Gonzalez, A. Lai, A. Lampis, D. Lancierini, C. Landesa Gomez, J. J. Lane, R. Lane, C. Langenbruch, J. Langer, O. Lantwin, T. Latham, F. Lazzari, C. Lazzeroni, R. Le Gac, H. Lee, R. Lefèvre, A. Leflat, S. Legotin, M. Lehuraux, E. Lemos Cid, O. Leroy, T. Lesiak, B. Leverington, A. Li, C. Li, H. Li, K. Li, L. Li, P. Li, P. -R. Li, Q. Li, S. Li, T. Li, T. Li, Y. Li, Y. Li, Z. Lian, X. Liang, S. Libralon, C. Lin, T. Lin, R. Lindner, V. Lisovskyi, R. Litvinov, F. L. Liu, G. Liu, K. Liu, S. Liu, W. Liu, Y. Liu, Y. Liu, Y. L. Liu, A. Lobo Salvia, A. Loi, J. Lomba Castro, T. Long, J. H. Lopes, A. Lopez Huertas, S. López Soliño, C. Lucarelli, D. Lucchesi, M. Lucio Martinez, V. Lukashenko, Y. Luo, A. Lupato, E. Luppi, K. Lynch, X. -R. Lyu, G. M. Ma, R. Ma, S. Maccolini, F. Machefert, F. Maciuc, B. Mack, I. Mackay, L. M. Mackey, L. R. Madhan Mohan, M. J. Madurai, A. Maevskiy, D. Magdalinski, D. Maisuzenko, M. W. Majewski, J. J. Malczewski, S. Malde, L. Malentacca, A. Malinin, T. Maltsev, G. Manca, G. Mancinelli, C. Mancuso, R. Manera Escalero, D. Manuzzi, D. Marangotto, J. F. Marchand, R. Marchevski, U. Marconi, S. Mariani, C. Marin Benito, J. Marks, A. M. Marshall, L. Martel, G. Martelli, G. Martellotti, L. Martinazzoli, M. Martinelli, D. Martinez Santos, F. Martinez Vidal, A. Massafferri, R. Matev, A. Mathad, V. Matiunin, C. Matteuzzi, K. R. Mattioli, A. Mauri, E. Maurice, J. Mauricio, P. Mayencourt, J. Mazorra de Cos, M. Mazurek, M. McCann, L. Mcconnell, T. H. McGrath, N. T. McHugh, A. McNab, R. McNulty, B. Meadows, G. Meier, D. Melnychuk, F. M. Meng, M. Merk, A. Merli, L. Meyer Garcia, D. Miao, H. Miao, M. Mikhasenko, D. A. Milanes, A. Minotti, E. Minucci, T. Miralles, B. Mitreska, D. S. Mitzel, A. Modak, R. A. Mohammed, R. D. Moise, S. Mokhnenko, T. Mombächer, M. Monk, S. Monteil, A. Morcillo Gomez, G. Morello, M. J. Morello, M. P. Morgenthaler, A. B. Morris, A. G. Morris, R. Mountain, H. Mu, Z. M. Mu, E. Muhammad, F. Muheim, M. Mulder, K. Müller, F. Muñoz-Rojas, R. Murta, P. Naik, T. Nakada, R. Nandakumar, T. Nanut, I. Nasteva, M. Needham, N. Neri, S. Neubert, N. Neufeld, P. Neustroev, J. Nicolini, D. Nicotra, E. M. Niel, N. Nikitin, P. Nogarolli, P. Nogga, N. S. Nolte, C. Normand, J. Novoa Fernandez, G. Nowak, C. Nunez, H. N. Nur, A. Oblakowska-Mucha, V. Obraztsov, T. Oeser, S. Okamura, A. Okhotnikov, O. Okhrimenko, R. Oldeman, F. Oliva, M. Olocco, C. J. G. Onderwater, R. H. O'Neil, D. Osthues, J. M. Otalora Goicochea, P. Owen, A. Oyanguren, O. Ozcelik, A. Padee, K. O. Padeken, B. Pagare, P. R. Pais, T. Pajero, A. Palano, M. Palutan, G. Panshin, L. Paolucci, A. Papanestis, M. Pappagallo, L. L. Pappalardo, C. Pappenheimer, C. Parkes, B. Passalacqua, G. Passaleva, D. Passaro, A. Pastore, M. Patel, J. Patoc, C. Patrignani, A. Paul, C. J. Pawley, A. Pellegrino, J. Peng, M. Pepe Altarelli, S. Perazzini, D. Pereima, H. Pereira Da Costa, A. Pereiro Castro, P. Perret, A. Perro, K. Petridis, A. Petrolini, J. P. Pfaller, H. Pham, L. Pica, M. Piccini, B. Pietrzyk, G. Pietrzyk, D. Pinci, F. Pisani, M. Pizzichemi, V. Placinta, M. Plo Casasus, T. Poeschl, F. Polci, M. Poli Lener, A. Poluektov, N. Polukhina, I. Polyakov, E. Polycarpo, S. Ponce, D. Popov, S. Poslavskii, K. Prasanth, C. Prouve, V. Pugatch, G. Punzi, S. Qasim, Q. Q. Qian, W. Qian, N. Qin, S. Qu, R. Quagliani, R. I. Rabadan Trejo, J. H. Rademacker, M. Rama, M. Ramírez García, V. Ramos De Oliveira, M. Ramos Pernas, M. S. Rangel, F. Ratnikov, G. Raven, M. Rebollo De Miguel, F. Redi, J. Reich, F. Reiss, Z. Ren, P. K. Resmi, R. Ribatti, G. R. Ricart, D. Riccardi, S. Ricciardi, K. Richardson, M. Richardson-Slipper, K. Rinnert, P. Robbe, G. Robertson, E. Rodrigues, E. Rodriguez Fernandez, J. A. Rodriguez Lopez, E. Rodriguez Rodriguez, J. Roensch, A. Rogachev, A. Rogovskiy, D. L. Rolf, P. Roloff, V. Romanovskiy, M. Romero Lamas, A. Romero Vidal, G. Romolini, F. Ronchetti, T. Rong, M. Rotondo, S. R. Roy, M. S. Rudolph, M. Ruiz Diaz, R. A. Ruiz Fernandez, J. Ruiz Vidal, A. Ryzhikov, J. Ryzka, J. J. Saavedra-Arias, J. J. Saborido Silva, R. Sadek, N. Sagidova, D. Sahoo, N. Sahoo, B. Saitta, M. Salomoni, C. Sanchez Gras, I. Sanderswood, R. Santacesaria, C. Santamarina Rios, M. Santimaria, L. Santoro, E. Santovetti, A. Saputi, D. Saranin, A. Sarnatskiy, G. Sarpis, M. Sarpis, C. Satriano, A. Satta, M. Saur, D. Savrina, H. Sazak, L. G. Scantlebury Smead, A. Scarabotto, S. Schael, S. Scherl, M. Schiller, H. Schindler, M. Schmelling, B. Schmidt, S. Schmitt, H. Schmitz, O. Schneider, A. Schopper, N. Schulte, S. Schulte, M. H. Schune, R. Schwemmer, G. Schwering, B. Sciascia, A. Sciuccati, S. Sellam, A. Semennikov, T. Senger, M. Senghi Soares, A. Sergi, N. Serra, L. Sestini, A. Seuthe, Y. Shang, D. M. Shangase, M. Shapkin, R. S. Sharma, I. Shchemerov, L. Shchutska, T. Shears, L. Shekhtman, Z. Shen, S. Sheng, V. Shevchenko, B. Shi, Q. Shi, Y. Shimizu, E. Shmanin, R. Shorkin, J. D. Shupperd, R. Silva Coutinho, G. Simi, S. Simone, N. Skidmore, T. Skwarnicki, M. W. Slater, J. C. Smallwood, E. Smith, K. Smith, M. Smith, A. Snoch, L. Soares Lavra, M. D. Sokoloff, F. J. P. Soler, A. Solomin, A. Solovev, I. Solovyev, R. Song, Y. Song, Y. Song, Y. S. Song, F. L. Souza De Almeida, B. Souza De Paula, E. Spadaro Norella, E. Spedicato, J. G. Speer, E. Spiridenkov, P. Spradlin, V. Sriskaran, F. Stagni, M. Stahl, S. Stahl, S. Stanislaus, E. N. Stein, O. Steinkamp, O. Stenyakin, H. Stevens, D. Strekalina, Y. Su, F. Suljik, J. Sun, L. Sun, Y. Sun, D. Sundfeld, W. Sutcliffe, P. N. Swallow, F. Swystun, A. Szabelski, T. Szumlak, Y. Tan, M. D. Tat, A. Terentev, F. Terzuoli, F. Teubert, E. Thomas, D. J. D. Thompson, H. Tilquin, V. Tisserand, S. T'Jampens, M. Tobin, L. Tomassetti, G. Tonani, X. Tong, D. Torres Machado, L. Toscano, D. Y. Tou, C. Trippl, G. Tuci, N. Tuning, L. H. Uecker, A. Ukleja, D. J. Unverzagt, E. Ursov, A. Usachov, A. Ustyuzhanin, U. Uwer, V. Vagnoni, G. Valenti, N. Valls Canudas, H. Van Hecke, E. van Herwijnen, C. B. Van Hulse, R. Van Laak, M. van Veghel, G. Vasquez, R. Vazquez Gomez, P. Vazquez Regueiro, C. Vázquez Sierra, S. Vecchi, J. J. Velthuis, M. Veltri, A. Venkateswaran, M. Vesterinen, D. Vico Benet, M. Vieites Diaz, X. Vilasis-Cardona, E. Vilella Figueras, A. Villa, P. Vincent, F. C. Volle, D. vom Bruch, N. Voropaev, K. Vos, G. Vouters, C. Vrahas, J. Wagner, J. Walsh, E. J. Walton, G. Wan, C. Wang, G. Wang, J. Wang, J. Wang, J. Wang, J. Wang, M. Wang, N. W. Wang, R. Wang, X. Wang, X. Wang, X. W. Wang, Y. Wang, Z. Wang, Z. Wang, Z. Wang, J. A. Ward, M. Waterlaat, N. K. Watson, D. Websdale, Y. Wei, J. Wendel, B. D. C. Westhenry, C. White, M. Whitehead, E. Whiter, A. R. Wiederhold, D. Wiedner, G. Wilkinson, M. K. Wilkinson, M. Williams, M. R. J. Williams, R. Williams, Z. Williams, F. F. Wilson, W. Wislicki, M. Witek, L. Witola, C. P. Wong, G. Wormser, S. A. Wotton, H. Wu, J. Wu, Y. Wu, Z. Wu, K. Wyllie, S. Xian, Z. Xiang, Y. Xie, A. Xu, J. Xu, L. Xu, L. Xu, M. Xu, Z. Xu, Z. Xu, Z. Xu, D. Yang, K. Yang, S. Yang, X. Yang, Y. Yang, Z. Yang, Z. Yang, V. Yeroshenko, H. Yeung, H. Yin, C. Y. Yu, J. Yu, X. Yuan, Y Yuan, E. Zaffaroni, M. Zavertyaev, M. Zdybal, C. Zeng, M. Zeng, C. Zhang, D. Zhang, J. Zhang, L. Zhang, S. Zhang, S. Zhang, Y. Zhang, Y. Z. Zhang, Y. Zhao, A. Zharkova, A. Zhelezov, S. Z. Zheng, X. Z. Zheng, Y. Zheng, T. Zhou, X. Zhou, Y. Zhou, V. Zhovkovska, L. Z. Zhu, X. Zhu, X. Zhu, V. Zhukov, J. Zhuo, Q. Zou, D. Zuliani, G. Zunica","doi":"arxiv-2408.16646","DOIUrl":"https://doi.org/arxiv-2408.16646","url":null,"abstract":"The rare electromagnetic $J/psi to mu^+mu^-mu^+mu^-$ decay is observed\u0000with a significance greatly exceeding the discovery threshold, using\u0000proton-proton collision data collected by the LHCb experiment during 2016-2018\u0000at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity\u0000of $5.4,text{fb}^{-1}$. The rate of this decay is measured relative to that\u0000of the $J/psi to mu^+mu^-$ mode. Using the QED model for the four-muon\u0000decay in the efficiency estimation, its branching fraction is determined to be\u0000begin{equation*} {mathcal{B}}(J/psi to mu^+mu^-mu^+mu^-) =\u0000(1.13pm0.10pm0.05pm0.01)times 10^{-6}, end{equation*} where the\u0000uncertainties are statistical, systematic and due to the uncertainty on the\u0000branching fraction of the $J/psi to mu^+mu^-$ decay.","PeriodicalId":501181,"journal":{"name":"arXiv - PHYS - High Energy Physics - Experiment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142201411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Measurement of the Decay $Ξ^{0}toΛγ$ with Entangled $Ξ^{0}barΞ^{0}$ Pairs","authors":"BESIII Collaboration","doi":"arxiv-2408.16654","DOIUrl":"https://doi.org/arxiv-2408.16654","url":null,"abstract":"In this Letter, a systematic study of the weak radiative hyperon decay\u0000$Xi^{0}toLambdagamma$ at an electron-positron collider using entangled\u0000$Xi^{0}bar{Xi}^{0}$ pair events is presented. The absolute branching\u0000fraction for this decay has been measured for the first time, and is\u0000$left(1.347 pm 0.066_{mathrm stat.}pm0.054_{mathrm syst.}right)times\u000010^{-3}$. The decay asymmetry parameter, which characterizes the effect of\u0000parity violation in the decay, is determined to be $-0.741 pm 0.062_{mathrm\u0000stat.}pm 0.019_{mathrm syst.}$. The obtained results are consistent with the\u0000world average values within the uncertainties, offering valuable insights into\u0000the underlying mechanism governing the weak radiative hyperon decays. The\u0000charge conjugation parity ($CP$) symmetries of branching fraction and decay\u0000asymmetry parameter in the decay are also studied. No statistically significant\u0000violation of charge conjugation parity symmetry is observed.","PeriodicalId":501181,"journal":{"name":"arXiv - PHYS - High Energy Physics - Experiment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142201409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Longitudinal double spin asymmetry of $π^{pm}$-tagged jet, $Λ$, $overlineΛ$, and $K_S^0$ in polarized $p+p$ collisions at $sqrt{s}=200$ $rm{GeV}$ at STAR","authors":"Yi Yu","doi":"arxiv-2408.15479","DOIUrl":"https://doi.org/arxiv-2408.15479","url":null,"abstract":"Understanding the origin of the proton spin is one of the most fundamental\u0000and challenging questions in QCD. Much progress has been made since the first\u0000surprising result by the EMC experiment in the late 1980s. However, the\u0000helicity distributions of strange quarks and anti-quarks inside the proton are\u0000still not well constrained by the experimental data. Measurement of the\u0000longitudinal double spin asymmetry $A_{LL}$ of the inclusive jets tagged with a\u0000$pi^{pm}/pi^-$ carrying high jet momentum fraction, $z$, in $p+p$ collisions\u0000can provide further constraints on the gluon helicity distribution in the\u0000proton. In addition, the $A_{LL}$ of $Lambda$, $overline{Lambda}$ and\u0000$K_S^0$ in the longitudinally polarized $p+p$ collisions may shed light on the\u0000strange quark and anti-quark helicity distributions. In this contribution, we\u0000report the preliminary results on the $A_{LL}$ measurements of inclusive jets\u0000tagged with a high-$z$ $pi^{pm}$, and the $Lambda$, $overline{Lambda}$ and\u0000$K_S^0$. We utilize the longitudinally polarized $p+p$ collisions at\u0000$sqrt{s}=200$ $rm{GeV}$ collected by the STAR experiment with an integrated\u0000luminosity of about 52 $rm{pb^{-1}}$.","PeriodicalId":501181,"journal":{"name":"arXiv - PHYS - High Energy Physics - Experiment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142201429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Axion Dark Matter eXperiment around 3.3 μeV with Dine-Fischler-Srednicki-Zhitnitsky Discovery Ability","authors":"C. Bartram, C. Boutan, T. Braine, J. H. Buckley, T. J. Caligiure, G. Carosi, A. S. Chou, C. Cisneros, John Clarke, E. J. Daw, N. Du, L. D. Duffy, T. A. Dyson, C. Gaikwad, J. R. Gleason, C. Goodman, M. Goryachev, M. Guzzetti, C. Hanretty, E. Hartman, A. T. Hipp, J. Hoffman, M. Hollister, R. Khatiwada, S. Knirck, C. L. Kuo, E. Lentz, B. T. McAllister, C. Mostyn, K. Murch, N. S. Oblath, M. G. Perry, A. Quiskamp, N. Robertson, L. J Rosenberg, S. Ruppert, G. Rybka, I. Siddiqi, P. Sikivie, J. Sinnis, M. E. Solano, A. Sonnenschein, N. S. Sullivan, D. B. Tanner, M. S. Taubman, M. E. Tobar, M. O. Withers, N. Woollett, D. Zhang","doi":"arxiv-2408.15227","DOIUrl":"https://doi.org/arxiv-2408.15227","url":null,"abstract":"We report the results of a QCD axion dark matter search with discovery\u0000ability for Dine-Fischler-Srednicki-Zhitnitsky (DFSZ) axions using an axion\u0000haloscope. Sub-Kelvin noise temperatures are reached with an ultra low-noise\u0000Josephson parametric amplifier cooled by a dilution refrigerator. This work\u0000excludes (with a 90% confidence level) DFSZ axions with masses between 3.27 to\u00003.34 {mu}eV, assuming a standard halo model with a local energy density of\u00000.45 GeV/cc made up 100% of axions.","PeriodicalId":501181,"journal":{"name":"arXiv - PHYS - High Energy Physics - Experiment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142201508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}