首页 > 最新文献

arXiv: High Energy Physics - Experiment最新文献

英文 中文
Particle identification for Higgs physics at future electron–positron collider 未来正电子对撞机中希格斯物理的粒子识别
Pub Date : 2019-04-03 DOI: 10.1142/S0217751X20410134
W. Yao
Particle Identification (PID) plays a key role in heavy flavor physics in high-energy physics experiments. However, its impact on Higgs physics is still not clear. In this note, we will explore some of the potential of PID to improve the identification of heavy-flavour jets by using identified charged Kaons in addition to the traditional vertexing information. This could result in a better measurment of the Higgs-charm Yukawa coupling at the future $e^+e^-$ colliders.
在高能物理实验中,粒子识别(PID)在重味物理中起着关键作用。然而,它对希格斯物理学的影响尚不清楚。在本文中,我们将探索PID的一些潜力,通过在传统的顶点信息之外使用已识别的带电介子来改进重味射流的识别。这可以在未来的e^+e^-$对撞机上更好地测量希格斯-粲汤川耦合。
{"title":"Particle identification for Higgs physics at future electron–positron collider","authors":"W. Yao","doi":"10.1142/S0217751X20410134","DOIUrl":"https://doi.org/10.1142/S0217751X20410134","url":null,"abstract":"Particle Identification (PID) plays a key role in heavy flavor physics in high-energy physics experiments. However, its impact on Higgs physics is still not clear. In this note, we will explore some of the potential of PID to improve the identification of heavy-flavour jets by using identified charged Kaons in addition to the traditional vertexing information. This could result in a better measurment of the Higgs-charm Yukawa coupling at the future $e^+e^-$ colliders.","PeriodicalId":8429,"journal":{"name":"arXiv: High Energy Physics - Experiment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76562823","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}
引用次数: 0
Searches for new physics with unconventional signatures at ATLAS and CMS [PowerPoint] 在ATLAS和CMS上搜索具有非常规特征的新物理[PowerPoint]
Pub Date : 2019-03-26 DOI: 10.2172/1570203
K. Pedro
Selected results from searches for new physics with unconventional signatures using the ATLAS and CMS detectors are presented. Such signatures include emerging jets, heavy charged particles, displaced or delayed objects, and disappearing tracks. These signatures may arise from hidden sectors or supersymmetric models. The searches use proton-proton collision data from Run 2 of the LHC with a center-of-mass energy of 13 TeV.
本文介绍了使用ATLAS和CMS探测器搜索具有非常规特征的新物理的选定结果。这些特征包括出现的喷流,重带电粒子,位移或延迟的物体,以及消失的轨道。这些签名可能来自隐藏扇区或超对称模型。搜索使用的是来自大型强子对撞机运行2的质子-质子碰撞数据,质心能量为13 TeV。
{"title":"Searches for new physics with unconventional signatures at ATLAS and CMS [PowerPoint]","authors":"K. Pedro","doi":"10.2172/1570203","DOIUrl":"https://doi.org/10.2172/1570203","url":null,"abstract":"Selected results from searches for new physics with unconventional signatures using the ATLAS and CMS detectors are presented. Such signatures include emerging jets, heavy charged particles, displaced or delayed objects, and disappearing tracks. These signatures may arise from hidden sectors or supersymmetric models. The searches use proton-proton collision data from Run 2 of the LHC with a center-of-mass energy of 13 TeV.","PeriodicalId":8429,"journal":{"name":"arXiv: High Energy Physics - Experiment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88473783","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}
引用次数: 0
The International Linear Collider: A Global Project 国际线性对撞机:一个全球性的项目
Pub Date : 2019-03-04 DOI: 10.2172/1527401
P. Bambade, T. Barklow, Ties Behnke, M. Berggren, James E. Brau, Philip Burrows, D. Denisov, Angeles Faus-Golfe, Brian Foster, Keisuke Fujii, Juan Fuster, F. Gaede, P. Grannis, C. Grojean, A. Hutton, B. List, J. List, S. Michizono, A. Miyamoto, O. Napoly, Michael E. Peskin, R. Poeschl, Frank Simon, J. Strube, J. Tian, M. Titov, M. Vos, Andrew White, G. Wilson, Akira Yamamoto, Hitoshi Yamamoto, K. Yokoya
A large, world-wide community of physicists is working to realise an exceptional physics program of energy-frontier, electron-positron collisions with the International Linear Collider (ILC). This program will begin with a central focus on high-precision and model-independent measurements of the Higgs boson couplings. This method of searching for new physics beyond the Standard Model is orthogonal to and complements the LHC physics program. The ILC at 250 GeV will also search for direct new physics in exotic Higgs decays and in pair-production of weakly interacting particles. Polarised electron and positron beams add unique opportunities to the physics reach. The ILC can be upgraded to higher energy, enabling precision studies of the top quark and measurement of the top Yukawa coupling and the Higgs self-coupling. The key accelerator technology, superconducting radio-frequency cavities, has matured. Optimised collider and detector designs, and associated physics analyses, were presented in the ILC Technical Design Report, signed by 2400 scientists. There is a strong interest in Japan to host this international effort. A detailed review of the many aspects of the project is nearing a conclusion in Japan. Now the Japanese government is preparing for a decision on the next phase of international negotiations, that could lead to a project start within a few years. The potential timeline of the ILC project includes an initial phase of about 4 years to obtain international agreements, complete engineering design and prepare construction, and form the requisite international collaboration, followed by a construction phase of 9 years.
一个庞大的,世界范围内的物理学家社区正在努力实现一个特殊的物理项目,利用国际线性对撞机(ILC)实现能量前沿的电子-正电子碰撞。该计划将以高精度和与模型无关的希格斯玻色子耦合测量为中心。这种在标准模型之外寻找新物理的方法与大型强子对撞机物理项目是正交的,并且是互补的。250 GeV的ILC还将在奇异的希格斯衰变和弱相互作用粒子的成对产生中寻找直接的新物理。极化电子束和正电子束为物理学领域增加了独特的机会。ILC可以升级到更高的能量,可以精确地研究顶夸克,测量顶汤川耦合和希格斯自耦合。超导射频腔加速器的关键技术已经成熟。优化的对撞机和探测器设计,以及相关的物理分析,在由2400名科学家签名的ILC技术设计报告中提出。日本对主办这一国际努力有着浓厚的兴趣。在日本,对该项目的许多方面的详细审查即将结束。现在,日本政府正准备就国际谈判的下一阶段做出决定,这可能会在几年内启动一个项目。ILC项目的潜在时间表包括大约4年的初始阶段,以获得国际协议,完成工程设计和准备施工,并形成必要的国际合作,随后是9年的建设阶段。
{"title":"The International Linear Collider: A Global Project","authors":"P. Bambade, T. Barklow, Ties Behnke, M. Berggren, James E. Brau, Philip Burrows, D. Denisov, Angeles Faus-Golfe, Brian Foster, Keisuke Fujii, Juan Fuster, F. Gaede, P. Grannis, C. Grojean, A. Hutton, B. List, J. List, S. Michizono, A. Miyamoto, O. Napoly, Michael E. Peskin, R. Poeschl, Frank Simon, J. Strube, J. Tian, M. Titov, M. Vos, Andrew White, G. Wilson, Akira Yamamoto, Hitoshi Yamamoto, K. Yokoya","doi":"10.2172/1527401","DOIUrl":"https://doi.org/10.2172/1527401","url":null,"abstract":"A large, world-wide community of physicists is working to realise an exceptional physics program of energy-frontier, electron-positron collisions with the International Linear Collider (ILC). This program will begin with a central focus on high-precision and model-independent measurements of the Higgs boson couplings. This method of searching for new physics beyond the Standard Model is orthogonal to and complements the LHC physics program. The ILC at 250 GeV will also search for direct new physics in exotic Higgs decays and in pair-production of weakly interacting particles. Polarised electron and positron beams add unique opportunities to the physics reach. The ILC can be upgraded to higher energy, enabling precision studies of the top quark and measurement of the top Yukawa coupling and the Higgs self-coupling. The key accelerator technology, superconducting radio-frequency cavities, has matured. Optimised collider and detector designs, and associated physics analyses, were presented in the ILC Technical Design Report, signed by 2400 scientists. There is a strong interest in Japan to host this international effort. A detailed review of the many aspects of the project is nearing a conclusion in Japan. Now the Japanese government is preparing for a decision on the next phase of international negotiations, that could lead to a project start within a few years. The potential timeline of the ILC project includes an initial phase of about 4 years to obtain international agreements, complete engineering design and prepare construction, and form the requisite international collaboration, followed by a construction phase of 9 years.","PeriodicalId":8429,"journal":{"name":"arXiv: High Energy Physics - Experiment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85433185","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}
引用次数: 21
Summary of the 2018 CKM Working Group on Semileptonic and Leptonic b-Hadron Decays 2018年CKM半光子和轻子b强子衰变工作组总结
Pub Date : 2019-02-25 DOI: 10.5281/ZENODO.2577805
C. Bouchard, Lu Cao, P. Owen
A summary of WG II of the CKM 2018 conference on semileptonic and leptonic b-hadron decays is presented. This includes discussions on the CKM matrix element magitudes |Vub| and |Vcb|, lepton universality tests such as R(D∗) and leptonic decays. As is usual for semileptonic and leptonic decays, much discussion is devoted towards the interplay between theoretical QCD calculations and the experimental measurements.
介绍了CKM 2018年半光子和轻子b强子衰变会议第二工作组的总结。这包括讨论CKM矩阵元素的大小|Vub|和|Vcb|,轻子普适检验如R(D∗)和轻子衰变。与通常的半光子和轻子衰变一样,对理论量子cd计算和实验测量之间的相互作用进行了大量的讨论。
{"title":"Summary of the 2018 CKM Working Group on Semileptonic and Leptonic b-Hadron Decays","authors":"C. Bouchard, Lu Cao, P. Owen","doi":"10.5281/ZENODO.2577805","DOIUrl":"https://doi.org/10.5281/ZENODO.2577805","url":null,"abstract":"A summary of WG II of the CKM 2018 conference on semileptonic and leptonic b-hadron decays is presented. This includes discussions on the CKM matrix element magitudes |Vub| and |Vcb|, lepton universality tests such as R(D∗) and leptonic decays. As is usual for semileptonic and leptonic decays, much discussion is devoted towards the interplay between theoretical QCD calculations and the experimental measurements.","PeriodicalId":8429,"journal":{"name":"arXiv: High Energy Physics - Experiment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84675088","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}
引用次数: 8
e-{mu} Discrimination at High Energy in the JUNO Detector 朱诺探测器高能e-{mu}鉴别
Pub Date : 2019-01-29 DOI: 10.1051/epjconf/201920901011
G. Settanta, S. Mari, C. Martellini, P. Montini
Cosmic Ray and neutrino oscillation physics can be studied by using atmospheric neutrinos. JUNO (Jiangmen Underground Neutrino Observatory) is a large liquid scintillator detector with low energy detection threshold and excellent energy resolution. The detector performances allow the atmospheric neutrino oscillation measurements. In this work, a discrimination algorithm for different reaction channels of neutrino-nucleon interactions in the JUNO liquid scintillator, in the GeV/sub-GeV energy region, is presented. The atmospheric neutrino flux is taken as reference, considering $overset{(-)}{nu_mu}$ and $overset{(-)}{nu_e}$. The different temporal behaviour of the classes of events have been exploited to build a time profile-based discrimination algorithm. The results show a good selection power for $overset{(-)}{nu_e}$ CC events, while the $overset{(-)}{nu_mu}$ CC component suffers of an important contamination from NC events at low energy, which is under study. Preliminary results are presented.
利用大气中微子可以研究宇宙射线和中微子振荡物理。JUNO(江门地下中微子天文台)是一种大型液体闪烁探测器,具有低能量探测阈值和优异的能量分辨率。探测器的性能允许对大气中微子振荡进行测量。本文提出了一种针对JUNO液体闪烁体在GeV/亚GeV能量区域中中微子-核子相互作用不同反应通道的判别算法。以大气中微子通量为参考,考虑$overset{(-)}{nu_mu}$和$overset{(-)}{nu_e}$。事件类的不同时间行为已被利用来建立一个基于时间轮廓的区分算法。结果表明,对$overset{(-)}{nu_e}$ CC事件具有良好的选择能力,而$overset{(-)}{nu_mu}$ CC分量在低能量时受到NC事件的严重污染,目前正在研究中。给出了初步结果。
{"title":"e-{mu} Discrimination at High Energy in the JUNO Detector","authors":"G. Settanta, S. Mari, C. Martellini, P. Montini","doi":"10.1051/epjconf/201920901011","DOIUrl":"https://doi.org/10.1051/epjconf/201920901011","url":null,"abstract":"Cosmic Ray and neutrino oscillation physics can be studied by using atmospheric neutrinos. JUNO (Jiangmen Underground Neutrino Observatory) is a large liquid scintillator detector with low energy detection threshold and excellent energy resolution. The detector performances allow the atmospheric neutrino oscillation measurements. In this work, a discrimination algorithm for different reaction channels of neutrino-nucleon interactions in the JUNO liquid scintillator, in the GeV/sub-GeV energy region, is presented. The atmospheric neutrino flux is taken as reference, considering $overset{(-)}{nu_mu}$ and $overset{(-)}{nu_e}$. The different temporal behaviour of the classes of events have been exploited to build a time profile-based discrimination algorithm. The results show a good selection power for $overset{(-)}{nu_e}$ CC events, while the $overset{(-)}{nu_mu}$ CC component suffers of an important contamination from NC events at low energy, which is under study. Preliminary results are presented.","PeriodicalId":8429,"journal":{"name":"arXiv: High Energy Physics - Experiment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80169119","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}
引用次数: 3
Elastic differential cross-section $${mathrm{d}}sigma /{mathrm{d}}t$$ at $$sqrt{s}=2.76hbox { TeV}$$ and implications on the existence of a colourless C-odd three-gluon compound state 弹性微分截面$${mathrm{d}}sigma /{mathrm{d}}t$$ ($$sqrt{s}=2.76hbox { TeV}$$)和对无色c奇三胶子化合物态存在的意义
Pub Date : 2018-12-14 DOI: 10.1140/EPJC/S10052-020-7654-Y
G. Antchev, P. Aspell, I. Atanassov, V. Avati, J. Baechler, C. B. Barrera, V. Berardi, M. Berretti, E. Bossini, U. Bottigli, M. Bozzo, H. Burkhardt, F. Cafagna, M. Catanesi, M. Csanád, T. Csörgő, M. Deile, F. Leonardis, M. Doubek, D. Druzhkin, K. Eggert, V. Eremin, F. Ferro, A. Fiergolski, F. García, V. Georgiev, S. Giani, L. Grzanka, J. Hammerbauer, V. Ivanchenko, J. Kašpar, J. Kopal, V. Kundr'at, S. Lami, G. Latino, R. Lauhakangas, C. Lindsey, M. Lokajicek, L. Losurdo, M. Vetere, F. Rodr'iguez, M. Macr'i, M. Malawski, N. Minafra, S. Minutoli, T. Naaranoja, T. Naaranoja, F. Nemes, H. Niewiadomski, T. Novák, E. Oliveri, F. Oljemark, F. Oljemark, M. Oriunno, K. Osterberg, K. Osterberg, P. Palazzi, V. Passaro, Z. Peroutka, J. Proch'azka, M. Quinto, E. Radermacher, E. Radicioni, F. Ravotti, E. Robutti, C. Royon, G. Ruggiero, H. Saarikko, H. Saarikko, A. Scribano, J. Smajek, W. Snoeys, J. Sziklai, C. Taylor, E. Tcherniaev, N. Turini, V. Vacek, J. Welti, J. Welti, Justin Williams
{"title":"Elastic differential cross-section $${mathrm{d}}sigma /{mathrm{d}}t$$ at $$sqrt{s}=2.76hbox { TeV}$$ and implications on the existence of a colourless C-odd three-gluon compound state","authors":"G. Antchev, P. Aspell, I. Atanassov, V. Avati, J. Baechler, C. B. Barrera, V. Berardi, M. Berretti, E. Bossini, U. Bottigli, M. Bozzo, H. Burkhardt, F. Cafagna, M. Catanesi, M. Csanád, T. Csörgő, M. Deile, F. Leonardis, M. Doubek, D. Druzhkin, K. Eggert, V. Eremin, F. Ferro, A. Fiergolski, F. García, V. Georgiev, S. Giani, L. Grzanka, J. Hammerbauer, V. Ivanchenko, J. Kašpar, J. Kopal, V. Kundr'at, S. Lami, G. Latino, R. Lauhakangas, C. Lindsey, M. Lokajicek, L. Losurdo, M. Vetere, F. Rodr'iguez, M. Macr'i, M. Malawski, N. Minafra, S. Minutoli, T. Naaranoja, T. Naaranoja, F. Nemes, H. Niewiadomski, T. Novák, E. Oliveri, F. Oljemark, F. Oljemark, M. Oriunno, K. Osterberg, K. Osterberg, P. Palazzi, V. Passaro, Z. Peroutka, J. Proch'azka, M. Quinto, E. Radermacher, E. Radicioni, F. Ravotti, E. Robutti, C. Royon, G. Ruggiero, H. Saarikko, H. Saarikko, A. Scribano, J. Smajek, W. Snoeys, J. Sziklai, C. Taylor, E. Tcherniaev, N. Turini, V. Vacek, J. Welti, J. Welti, Justin Williams","doi":"10.1140/EPJC/S10052-020-7654-Y","DOIUrl":"https://doi.org/10.1140/EPJC/S10052-020-7654-Y","url":null,"abstract":"","PeriodicalId":8429,"journal":{"name":"arXiv: High Energy Physics - Experiment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88529474","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}
引用次数: 31
(Semi-)leptonic decays of D Mesons at BESIII BESIII上D介子的(半)轻子衰变
Pub Date : 2018-12-02 DOI: 10.5281/zenodo.2530407
Youhua Yang
Leptonic and semi-leptonic $D$ decays at BESIII contribute the most precise experimental measurement of $|V_{cs(d)}|$ and form factor $f_{D_{(s)}}$ in the world based on 2.93 fb$^{-1}$ and 3.19 fb$^{-1}$ data taken at center-of-mass energies $sqrt{s} = 3.773$ and 4.180~GeV, respectively. The largest samples at the mass threshold of the charmed hardons $D_{(s)}$ also provide chances to extract form factors of some semi-electronic decays for the first time and together with the semi-muonic decays we could understand lepton flavour universality better.
基于质心能量为$sqrt{s} = 3.773$和4.180~GeV的2.93 fb$^{-1}$和3.19 fb$^{-1}$的数据,BESIII上的轻子和半轻子$D$衰变贡献了世界上最精确的实验测量值$|V_{cs(D)}}$和形状因子$f_{D_{(s)}}$。在粲强子$D_{(s)}$质量阈值处的最大样本也为首次提取某些半电子衰变的形状因子提供了机会,并与半介子衰变一起,我们可以更好地理解轻子风味的普适性。
{"title":"(Semi-)leptonic decays of D Mesons at BESIII","authors":"Youhua Yang","doi":"10.5281/zenodo.2530407","DOIUrl":"https://doi.org/10.5281/zenodo.2530407","url":null,"abstract":"Leptonic and semi-leptonic $D$ decays at BESIII contribute the most precise experimental measurement of $|V_{cs(d)}|$ and form factor $f_{D_{(s)}}$ in the world based on 2.93 fb$^{-1}$ and 3.19 fb$^{-1}$ data taken at center-of-mass energies $sqrt{s} = 3.773$ and 4.180~GeV, respectively. The largest samples at the mass threshold of the charmed hardons $D_{(s)}$ also provide chances to extract form factors of some semi-electronic decays for the first time and together with the semi-muonic decays we could understand lepton flavour universality better.","PeriodicalId":8429,"journal":{"name":"arXiv: High Energy Physics - Experiment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89283030","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}
引用次数: 1
Measurement of hadron form factors at BESIII BESIII强子形状因子的测量
Pub Date : 2018-10-01 DOI: 10.1051/epjconf/201819200023
C. Redmer
The BESIII experiment, operated at the BEPCII e + e - collider in Beijing, has acquired large data sets at center-of-mass energies between 2.0 GeV and 4.6 GeV. One of the key aspects of the physics program of the BESIII collaboration is to test the understanding of QCD at intermediate energies. Applying different experimental techniques, form factors of hadrons are measured. Among these are the pion form factor, as an important input to the (g - 2)μ puzzle, and the electro-magnetic form factors of nucleons and hyperons in the time-like regime. An overview of the recent results and some ongoing studies at BESIII is provided.
BESIII实验在北京的BEPCII e + e对撞机上运行,获得了质心能量在2.0到4.6 GeV之间的大数据集。BESIII合作物理计划的一个关键方面是测试对中能量QCD的理解。采用不同的实验技术,测量了强子的形状因子。其中包括介子形式因子,作为(g - 2)μ谜题的一个重要输入,以及类时态中核子和超子的电磁形式因子。概述了BESIII最近的结果和一些正在进行的研究。
{"title":"Measurement of hadron form factors at BESIII","authors":"C. Redmer","doi":"10.1051/epjconf/201819200023","DOIUrl":"https://doi.org/10.1051/epjconf/201819200023","url":null,"abstract":"The BESIII experiment, operated at the BEPCII e + e - collider in Beijing, has acquired large data sets at center-of-mass energies between 2.0 GeV and 4.6 GeV. One of the key aspects of the physics program of the BESIII collaboration is to test the understanding of QCD at intermediate energies. Applying different experimental techniques, form factors of hadrons are measured. Among these are the pion form factor, as an important input to the (g - 2)μ puzzle, and the electro-magnetic form factors of nucleons and hyperons in the time-like regime. An overview of the recent results and some ongoing studies at BESIII is provided.","PeriodicalId":8429,"journal":{"name":"arXiv: High Energy Physics - Experiment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75689717","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}
引用次数: 3
Open heavy-flavour measurements with ALICE at the LHC 用ALICE在大型强子对撞机进行重味测量
Pub Date : 2018-09-18 DOI: 10.1051/epjconf/201819200016
F. Colamaria
Heavy quarks are produced in the early stages of ultra-relativistic heavy-ion collisions, and their number is preserved throughout the subsequent evolution of the system. Therefore, they constitute ideal probes for characterising the Quark--Gluon Plasma (QGP) medium and for the study of its transport properties. In particular, heavy quarks interact with the partonic constituents of the plasma, losing energy, and are expected to be sensitive to the medium collective motion induced by its hydrodynamical evolution. In pp collisions, the measurement of heavy-flavour hadron production provides a reference for heavy-ion studies, and allows also testing perturbative QCD calculations in a wide range of collision energies. Similar studies in p--Pb collisions help in disentangling cold nuclear matter effects from modifications induced by the presence of a QGP medium, and are also useful to investigate the possible existence of collective phenomena also in this system. The ALICE detector provides excellent performances in terms of particle identification and vertexing capabilities. Hence, it is fully suited for the reconstruction of charmed mesons and baryons and of electrons from heavy-flavour hadron decays at central rapidity. Furthermore, the ALICE muon spectrometer allows reconstructing heavy-flavour decay muons at forward rapidity. A review of the main ALICE results on open heavy flavour production in pp, p--Pb and Pb--Pb collisions is presented. Recent, more differential measurements are also shown, including azimuthal correlations of heavy-flavour particles with charged hadrons in p--Pb collisions, and D-meson tagged-jet production in p--Pb and Pb--Pb collisions.
重夸克是在超相对论重离子碰撞的早期阶段产生的,它们的数量在随后的系统演化中一直保持不变。因此,它们构成了表征夸克-胶子等离子体(QGP)介质和研究其输运性质的理想探针。特别是,重夸克与等离子体的部分子成分相互作用,损失能量,并且预计对其流体动力学演化引起的介质集体运动敏感。在pp碰撞中,重味强子产生的测量为重离子研究提供了参考,也允许在大范围的碰撞能量下测试微扰QCD计算。在p—Pb碰撞中的类似研究有助于从QGP介质的存在引起的修饰中解纠缠冷核物质效应,并且也有助于研究该系统中可能存在的集体现象。ALICE探测器在粒子识别和顶点化能力方面提供了出色的性能。因此,它完全适合重建粲介子和重子,以及重味强子以中心速度衰变产生的电子。此外,ALICE μ子谱仪允许重建重味衰变μ子向前快速。本文综述了在pp、p—Pb和Pb—Pb碰撞中产生开放式重味的主要ALICE结果。最近,还显示了更多的差分测量,包括p—Pb碰撞中重味粒子与带电强子的方位相关性,以及p—Pb和Pb—Pb碰撞中d介子标记射流的产生。
{"title":"Open heavy-flavour measurements with ALICE at the LHC","authors":"F. Colamaria","doi":"10.1051/epjconf/201819200016","DOIUrl":"https://doi.org/10.1051/epjconf/201819200016","url":null,"abstract":"Heavy quarks are produced in the early stages of ultra-relativistic heavy-ion collisions, and their number is preserved throughout the subsequent evolution of the system. Therefore, they constitute ideal probes for characterising the Quark--Gluon Plasma (QGP) medium and for the study of its transport properties. In particular, heavy quarks interact with the partonic constituents of the plasma, losing energy, and are expected to be sensitive to the medium collective motion induced by its hydrodynamical evolution. In pp collisions, the measurement of heavy-flavour hadron production provides a reference for heavy-ion studies, and allows also testing perturbative QCD calculations in a wide range of collision energies. Similar studies in p--Pb collisions help in disentangling cold nuclear matter effects from modifications induced by the presence of a QGP medium, and are also useful to investigate the possible existence of collective phenomena also in this system. The ALICE detector provides excellent performances in terms of particle identification and vertexing capabilities. Hence, it is fully suited for the reconstruction of charmed mesons and baryons and of electrons from heavy-flavour hadron decays at central rapidity. Furthermore, the ALICE muon spectrometer allows reconstructing heavy-flavour decay muons at forward rapidity. A review of the main ALICE results on open heavy flavour production in pp, p--Pb and Pb--Pb collisions is presented. Recent, more differential measurements are also shown, including azimuthal correlations of heavy-flavour particles with charged hadrons in p--Pb collisions, and D-meson tagged-jet production in p--Pb and Pb--Pb collisions.","PeriodicalId":8429,"journal":{"name":"arXiv: High Energy Physics - Experiment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90835122","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}
引用次数: 0
Study of the decay $K^{+}topi^{+}pi^{-}pi^{+}gamma$ in the OKA experiment OKA实验中衰变$K^{+}topi^{+}pi^{-}pi^{+}gamma$的研究
Pub Date : 2018-08-28 DOI: 10.1140/epjc/s10052-019-6797-1
A. Sadovsky, G. Khaustov, V. Uvarov, S. Kholodenko, V. Kravtsov, V. Lishin, V. Obraztsov, V. Lysan, V. Samoǐlenko, A. Blik, Sergey Filippov, V. Duk, V. Semenov, A. Polyarush, A. Inyakin, V. Leontiev, B. Zalikhanov, V. Kolosov, O. Stenyakin, A. Popov, A. Konstantinov, A. Gorin, V. Romanovsky, M. Medynsky, V. Burtovoy, V. Brekhovskikh, S. Donskov, V. Polyakov, A. Artamonov, O. Yushchenko, S. Akimenko, A. Filin, E. Guschin, O. Tchikilev, A. Khudyakov, Y. Mikhailov, V. Kurshetsov, Y. Kudenko, V. Rykalin, G. Kekelidze, V. Bychkov
{"title":"Study of the decay $K^{+}topi^{+}pi^{-}pi^{+}gamma$ in the OKA experiment","authors":"A. Sadovsky, G. Khaustov, V. Uvarov, S. Kholodenko, V. Kravtsov, V. Lishin, V. Obraztsov, V. Lysan, V. Samoǐlenko, A. Blik, Sergey Filippov, V. Duk, V. Semenov, A. Polyarush, A. Inyakin, V. Leontiev, B. Zalikhanov, V. Kolosov, O. Stenyakin, A. Popov, A. Konstantinov, A. Gorin, V. Romanovsky, M. Medynsky, V. Burtovoy, V. Brekhovskikh, S. Donskov, V. Polyakov, A. Artamonov, O. Yushchenko, S. Akimenko, A. Filin, E. Guschin, O. Tchikilev, A. Khudyakov, Y. Mikhailov, V. Kurshetsov, Y. Kudenko, V. Rykalin, G. Kekelidze, V. Bychkov","doi":"10.1140/epjc/s10052-019-6797-1","DOIUrl":"https://doi.org/10.1140/epjc/s10052-019-6797-1","url":null,"abstract":"","PeriodicalId":8429,"journal":{"name":"arXiv: High Energy Physics - Experiment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79100104","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}
引用次数: 14
期刊
arXiv: High Energy Physics - Experiment
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1