G. Bozzi, A. Bacchetta, V. Bertone, C. Bissolotti, M. Cerutti, Fulvio Piacenza, M. Radici, A. Signori
We present the most recent extraction of unpolarized transverse-momentum-dependent (TMD) parton distribution functions (PDFs) and TMD fragmentation functions (FFs) from global data sets of Semi-Inclusive Deep-Inelastic Scattering (SIDIS) and Drell-Yan. The fit is performed at the (next-to-) 3 leading logarithmic accuracy in the resummation of q T -logarithms and features flexible non-perturbative functions, which allow to reach a very good agreement with the experimental data. In particular, we address the tension between the low-energy SIDIS data and the theory predictions, and explore the impact of the precise LHC data on the fit results.
本文从全球半包容深度非弹性散射(SIDIS)和drel - yan数据集中提取了最新的非极化横动量相关(TMD)部分分布函数(pdf)和TMD碎片函数(FFs)。在q - T -对数的恢复中，拟合是在(next-to-) 3领先对数精度处进行的，并且具有灵活的非摄动函数，可以与实验数据达到非常好的一致性。特别地，我们解决了低能量SIDIS数据与理论预测之间的紧张关系，并探讨了精确的LHC数据对拟合结果的影响。
{"title":"Global extraction of unpolarized quark TMDs at N3LL","authors":"G. Bozzi, A. Bacchetta, V. Bertone, C. Bissolotti, M. Cerutti, Fulvio Piacenza, M. Radici, A. Signori","doi":"10.22323/1.414.0800","DOIUrl":"https://doi.org/10.22323/1.414.0800","url":null,"abstract":"We present the most recent extraction of unpolarized transverse-momentum-dependent (TMD) parton distribution functions (PDFs) and TMD fragmentation functions (FFs) from global data sets of Semi-Inclusive Deep-Inelastic Scattering (SIDIS) and Drell-Yan. The fit is performed at the (next-to-) 3 leading logarithmic accuracy in the resummation of q T -logarithms and features flexible non-perturbative functions, which allow to reach a very good agreement with the experimental data. In particular, we address the tension between the low-energy SIDIS data and the theory predictions, and explore the impact of the precise LHC data on the fit results.","PeriodicalId":286451,"journal":{"name":"Proceedings of 41st International Conference on High Energy physics — PoS(ICHEP2022)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130065229","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":"Charged particle pseudorapidity density in proton-proton collisions at $sqrt{s}$ = 900 GeV with the ALICE MFT","authors":"Sarah Herrmann","doi":"10.22323/1.414.0997","DOIUrl":"https://doi.org/10.22323/1.414.0997","url":null,"abstract":"","PeriodicalId":286451,"journal":{"name":"Proceedings of 41st International Conference on High Energy physics — PoS(ICHEP2022)","volume":"132 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131453708","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}
M. Naviglio, G. Martinelli, S. Simula, L. Vittorio
{"title":"$|V_{cb}|$, LFU and $SU(3)_F$ symmetry breaking in $B_{(s)} to D_{(s)}^{(*)} ell nu_ell$ decays using Lattice QCD and Unitarity","authors":"M. Naviglio, G. Martinelli, S. Simula, L. Vittorio","doi":"10.22323/1.414.0755","DOIUrl":"https://doi.org/10.22323/1.414.0755","url":null,"abstract":"","PeriodicalId":286451,"journal":{"name":"Proceedings of 41st International Conference on High Energy physics — PoS(ICHEP2022)","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126010343","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}
The Jiangmen Underground Neutrino Observatory (JUNO) is a 20 kton multipurpose liquid-scintillator detector whose main goal is the determination of the neutrino mass ordering using the measurement of the vacuum dominated oscillation pattern of reactor anti-neutrinos from eight reactor cores. The sensitivity of JUNO to the neutrino mass ordering can be enhanced via a combined analysis of reactor anti-neutrinos with atmospheric neutrinos, in which the matter-dominated oscillation depends on the mass ordering. Such an analysis requires a precise reconstruction of the energy and the direction of atmospheric neutrinos. As the largest liquid-scintillator detector ever built, JUNO will also be able to measure the atmospheric neutrino flux down to lower energies than the current large Cherenkov detectors. This poster presents the reconstruction of the energy of atmospheric neutrinos with a machine learning approach and the direction reconstruction with a novel approach. While the machine learning approach relies on the geometrical representation of the detector with a Graph Convolutional Neural Network, the latter focuses on the reconstruction of the photon emission topology in the JUNO detector. The results presented are based on Monte-Carlo simulations, including for the first time the full electronics response, calibration and waveform reconstruction.
{"title":"Reconstruction of atmospheric neutrino events at JUNO","authors":"Rosmarie Wirth, M. Rifai, Marta Molla Colomer","doi":"10.22323/1.414.1114","DOIUrl":"https://doi.org/10.22323/1.414.1114","url":null,"abstract":"The Jiangmen Underground Neutrino Observatory (JUNO) is a 20 kton multipurpose liquid-scintillator detector whose main goal is the determination of the neutrino mass ordering using the measurement of the vacuum dominated oscillation pattern of reactor anti-neutrinos from eight reactor cores. The sensitivity of JUNO to the neutrino mass ordering can be enhanced via a combined analysis of reactor anti-neutrinos with atmospheric neutrinos, in which the matter-dominated oscillation depends on the mass ordering. Such an analysis requires a precise reconstruction of the energy and the direction of atmospheric neutrinos. As the largest liquid-scintillator detector ever built, JUNO will also be able to measure the atmospheric neutrino flux down to lower energies than the current large Cherenkov detectors. This poster presents the reconstruction of the energy of atmospheric neutrinos with a machine learning approach and the direction reconstruction with a novel approach. While the machine learning approach relies on the geometrical representation of the detector with a Graph Convolutional Neural Network, the latter focuses on the reconstruction of the photon emission topology in the JUNO detector. The results presented are based on Monte-Carlo simulations, including for the first time the full electronics response, calibration and waveform reconstruction.","PeriodicalId":286451,"journal":{"name":"Proceedings of 41st International Conference on High Energy physics — PoS(ICHEP2022)","volume":"113 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133318948","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":"Searches in CMS for long-lived particles and other non-conventional signatures","authors":"C. F. Madrazo","doi":"10.22323/1.414.0152","DOIUrl":"https://doi.org/10.22323/1.414.0152","url":null,"abstract":"","PeriodicalId":286451,"journal":{"name":"Proceedings of 41st International Conference on High Energy physics — PoS(ICHEP2022)","volume":"161 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122195013","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}
To calculate the parton distribution functions (PDF) from first principles using lattice gauge theories it is convenient to consider the Ioffe-time distribution defined through gauge-invariant bi-local operators with spacelike separation. Lattice calculations provide values for a limited range of the distance separating the bi-local operators. In order to perform the Fourier transform and obtain the pseudo-and the quasi-PDFs, it is then necessary to extrapolate the large-distance behavior. I will discuss the formalism one may use to study the behavior of the Ioffe-time distribution at large distances and show that the pseudo-PDF and quasi-PDF are very different in this regime. Using light-ray operators, I will also show that the higher twist corrections of the quasi-PDF come in not as inverse powers of 𝑃 but as inverse powers of 𝑥 𝐵 𝑃 .
{"title":"Pseudo- and quasi-PDFs in the BFKL approximation","authors":"G. Chirilli","doi":"10.22323/1.414.0826","DOIUrl":"https://doi.org/10.22323/1.414.0826","url":null,"abstract":"To calculate the parton distribution functions (PDF) from first principles using lattice gauge theories it is convenient to consider the Ioffe-time distribution defined through gauge-invariant bi-local operators with spacelike separation. Lattice calculations provide values for a limited range of the distance separating the bi-local operators. In order to perform the Fourier transform and obtain the pseudo-and the quasi-PDFs, it is then necessary to extrapolate the large-distance behavior. I will discuss the formalism one may use to study the behavior of the Ioffe-time distribution at large distances and show that the pseudo-PDF and quasi-PDF are very different in this regime. Using light-ray operators, I will also show that the higher twist corrections of the quasi-PDF come in not as inverse powers of 𝑃 but as inverse powers of 𝑥 𝐵 𝑃 .","PeriodicalId":286451,"journal":{"name":"Proceedings of 41st International Conference on High Energy physics — PoS(ICHEP2022)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115654063","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}
We report a measurement of the B 0s → µ + µ − branching fraction and its effective lifetime, as well as results of a search for the B 0 → µ + µ − decay in proton-proton collisions at √ s = 13 TeV at the LHC. The analysis is based on data collected with the CMS detector in 2016-2018 corresponding to an integrated luminosity of 140 fb − 1 . The measured branching fraction of the B 0s → µ + µ − decay and the effective B 0s lifetime are the most precise measurements to date. No evidence for the B 0 → µ + µ − decay has been found. All results are found to be consistent with the standard model predictions.
{"title":"CMS measurements of rare B meson decays to two muons","authors":"D. Kovalskyi","doi":"10.22323/1.414.1235","DOIUrl":"https://doi.org/10.22323/1.414.1235","url":null,"abstract":"We report a measurement of the B 0s → µ + µ − branching fraction and its effective lifetime, as well as results of a search for the B 0 → µ + µ − decay in proton-proton collisions at √ s = 13 TeV at the LHC. The analysis is based on data collected with the CMS detector in 2016-2018 corresponding to an integrated luminosity of 140 fb − 1 . The measured branching fraction of the B 0s → µ + µ − decay and the effective B 0s lifetime are the most precise measurements to date. No evidence for the B 0 → µ + µ − decay has been found. All results are found to be consistent with the standard model predictions.","PeriodicalId":286451,"journal":{"name":"Proceedings of 41st International Conference on High Energy physics — PoS(ICHEP2022)","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134418971","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}
Jets are collimated sprays of hadrons and serve as an experimental tool for studying the dynamics of quarks and gluons. In particular, differential measurements of jet substructure enable a systematic exploration of the parton shower evolution. The SoftDrop grooming technique utilizes the angular ordered Cambridge/Aachen reclustering tree and provides a correspondence between the experimental observables, such as the shared momentum fraction ( z g ) , groomed jet radius or split opening angle ( R g )
{"title":"Multi-dimensional measurements of parton shower in pp collisions at RHIC","authors":"M. Robotková","doi":"10.22323/1.414.1183","DOIUrl":"https://doi.org/10.22323/1.414.1183","url":null,"abstract":"Jets are collimated sprays of hadrons and serve as an experimental tool for studying the dynamics of quarks and gluons. In particular, differential measurements of jet substructure enable a systematic exploration of the parton shower evolution. The SoftDrop grooming technique utilizes the angular ordered Cambridge/Aachen reclustering tree and provides a correspondence between the experimental observables, such as the shared momentum fraction ( z g ) , groomed jet radius or split opening angle ( R g )","PeriodicalId":286451,"journal":{"name":"Proceedings of 41st International Conference on High Energy physics — PoS(ICHEP2022)","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114325462","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}
As both predictions and measurements of high-energy physics observables become more precise, controlling all sources of uncertainties in determinations of parton distribution functions (PDFs) becomes increasingly important. One source of PDF uncertainty is the result of data not being consistent under a chosen theoretical framework. In these proceedings we investigate the impact these inconsistencies present in the global NNPDF4.0 dataset. We show that, when accounting for missing higher order uncertainties, the missing contribution to the PDF uncertainty due to data inconsistencies are at the level of statistical fluctuations.
{"title":"The negligible impact of experimental inconsistencies in the NNPDF4.0 global dataset","authors":"Roy Stegeman","doi":"10.22323/1.414.0787","DOIUrl":"https://doi.org/10.22323/1.414.0787","url":null,"abstract":"As both predictions and measurements of high-energy physics observables become more precise, controlling all sources of uncertainties in determinations of parton distribution functions (PDFs) becomes increasingly important. One source of PDF uncertainty is the result of data not being consistent under a chosen theoretical framework. In these proceedings we investigate the impact these inconsistencies present in the global NNPDF4.0 dataset. We show that, when accounting for missing higher order uncertainties, the missing contribution to the PDF uncertainty due to data inconsistencies are at the level of statistical fluctuations.","PeriodicalId":286451,"journal":{"name":"Proceedings of 41st International Conference on High Energy physics — PoS(ICHEP2022)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129718629","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":"Strong decay widths and mass spectra of charmed baryons","authors":"A. Ramirez Morales","doi":"10.22323/1.414.0913","DOIUrl":"https://doi.org/10.22323/1.414.0913","url":null,"abstract":"","PeriodicalId":286451,"journal":{"name":"Proceedings of 41st International Conference on High Energy physics — PoS(ICHEP2022)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129375794","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}
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