Bayesian Monte Carlo extraction of the sea asymmetry with SeaQuest and STAR data
Bayesian Monte Carlo extraction of the sea asymmetry with SeaQuest and STAR data
复制标题
使用 SeaQuest 和 STAR 数据提取海洋不对称性的贝叶斯蒙特卡罗
DOI：
10.1103/physrevd.104.074031
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发表时间：
2021
影响因子：
5
通讯作者：
Sato, N.
中科院分区：
文献类型：
--
作者：
Cocuzza, C.;Melnitchouk, W.;Metz, A.;Sato, N.
我们在贝叶斯蒙特卡罗框架内对非极化部分子分布进行了全球QCD分析，包括RHIC星星合作组的新轻子产生数据和费米实验室SeaQuest实验的Drell-Yan双μ子数据。我们评估了这两个新的测量对质子中轻反夸克海的影响，特别是不对称性。SeaQuest的数据被发现显着减少的不确定性在大的部分子动量分数的theratio，强烈有利于增强sea高达，在一般协议与非微扰计算的基础上的手征对称性破缺QCD。
We perform a global QCD analysis of unpolarized parton distributions within a Bayesian Monte Carlo framework, including the new-lepton production data from the STAR Collaboration at RHIC and Drell-Yan dimuon data from the SeaQuest experiment at Fermilab. We assess the impact of these two new measurements on the light antiquark sea in the proton and theasymmetry in particular. The SeaQuest data are found to significantly reduce the uncertainty on theratio at large parton momentum fractions, strongly favoring an enhancedsea up to, in general agreement with nonperturbative calculations based on chiral symmetry breaking in QCD.
影响因子：
4.4
作者：
Abramowicz, H.;Abt, I.;Zotkin, D. S.
通讯作者：
Zotkin, D. S.
影响因子：
64.8
作者：
J. Dove;B. Kerns;R. McClellan;S. Miyasaka;D. H. Morton;K. Nagai;S. Prasad;F. Sanftl;M. Scott;A. Tadepalli;C. Aidala;J. Arrington;C. Ayuso;C. L. Barker;C. Brown;W. Chang;A. Chen;D. Christian;B. Dannowitz;M. Daugherity;M. Diefenthaler;L. El Fassi;D. Geesaman;R. Gilman;Y. Goto;L. Guo;R. Guo;T. Hague;R. Holt;D. Isenhower;E. Kinney;N. Kitts;A. Klein;D. Kleinjan;Y. Kudo;Ching Him Leung;P. Lin;K. Liu;M. Liu;W. Lorenzon;N. Makins;M. D. de Medeiros;P. McGaughey;Y. Miyachi;I. Mooney;K. Nakahara;K. Nakano;S. Nara;J. Peng;A. Puckett;B. Ramson;P. Reimer;J. Rubin;S. Sawada;T. Sawada;T. Shibata;D. Su;M. Teo;B. Tice;R. Towell;S. Uemura;S. Watson;S. Wang;A. Wickes;J. Wu;Z. Xi;Z. Ye
通讯作者：
J. Dove;B. Kerns;R. McClellan;S. Miyasaka;D. H. Morton;K. Nagai;S. Prasad;F. Sanftl;M. Scott;A. Tadepalli;C. Aidala;J. Arrington;C. Ayuso;C. L. Barker;C. Brown;W. Chang;A. Chen;D. Christian;B. Dannowitz;M. Daugherity;M. Diefenthaler;L. El Fassi;D. Geesaman;R. Gilman;Y. Goto;L. Guo;R. Guo;T. Hague;R. Holt;D. Isenhower;E. Kinney;N. Kitts;A. Klein;D. Kleinjan;Y. Kudo;Ching Him Leung;P. Lin;K. Liu;M. Liu;W. Lorenzon;N. Makins;M. D. de Medeiros;P. McGaughey;Y. Miyachi;I. Mooney;K. Nakahara;K. Nakano;S. Nara;J. Peng;A. Puckett;B. Ramson;P. Reimer;J. Rubin;S. Sawada;T. Sawada;T. Shibata;D. Su;M. Teo;B. Tice;R. Towell;S. Uemura;S. Watson;S. Wang;A. Wickes;J. Wu;Z. Xi;Z. Ye