Dr. 王翔鹏 Inclusive production of J/ψ, ψ(2S), and Υ states in pNRQCD

Friday 17 Feb 2023, 14:00 → 16:00 Asia/Shanghai

Abstract: Under some assumptions on the hierarchy of relevant energy scales, we compute the nonrelativistic QCD (NRQCD) long-distance matrix elements (LDMEs) for inclusive production of J/ψ, ψ(2S), and Υ states based on the potential NRQCD (pNRQCD) effective field theory. Based on the pNRQCD formalism, we obtain expressions for the LDMEs in terms of the quarkonium wavefunctions at the origin and universal gluonic correlators, which do not depend on the heavy quark flavor or the radial excitation. This greatly reduces the number of nonperturbative unknowns and substantially enhances the predictive power of the nonrelativistic effective field theory formalism. We obtain improved determinations of the LDMEs for J/ψ, ψ(2S), and Υ states thanks to the universality of the gluonic correlators, and obtain phenomenological results for cross sections and polarizations at large transverse momentum that agree well with measurements at the LHC.

王翔鹏，2011年本科毕业于吉林大学，2014年硕士毕业于中科院大学，2018年博士毕业于德国汉堡大学和德国同步辐射加速器中心 (DESY)。在美国阿贡国家实验室做完第一期博后之后，目前在德国慕尼黑工业大学做第二期博后。研究方向主要为重夸克偶素物理，微扰QCD高阶计算，有效场论及QCD因子化。

 

Time: 2:00 pm Friday,  Feb 17, 2023

Location: 江湾物理楼 C101

腾讯会议 ID: 204 363 728      Passcode: 200438

Host: Dingyu Shao

 

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#腾讯会议：204-363-728
会议密码：200438