學(xué)術(shù)活動(dòng)
【10.10】Seminar:S-wave Quarkonium production in the framework of potential non-relativistic QCD
文章來(lái)源:  2023-10-08
】 【】 【

?Seminar


報(bào)告題目:S-wave Quarkonium production in the framework of potential non-relativistic QCD?

?

報(bào)? 告 人王翔鵬??博士(德國(guó)慕尼黑工業(yè)大學(xué))

主? 持 人:賈宇? 研究員(中科院高能所)

報(bào)告時(shí)間:2023年10月10日(周二),上午10:00

報(bào)告地點(diǎn):圖書館樓319會(huì)議室

?

?

報(bào)告摘要:

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.


?

個(gè)人簡(jiǎn)介:?

王翔鵬,2011年本科畢業(yè)于吉林大學(xué),2014年碩士畢業(yè)于中科院大學(xué),2018年博士畢業(yè)于德國(guó)漢堡大學(xué)和德國(guó)同步輻射加速器中心 (DESY)。在美國(guó)阿貢國(guó)家實(shí)驗(yàn)室做完第一期博后之后,目前在德國(guó)慕尼黑工業(yè)大學(xué)做第二期博后。研究方向主要為重夸克偶素物理,微擾QCD高階計(jì)算,有效場(chǎng)論及QCD因子化。



附件下載:

地址:北京市918信箱 郵編:100049 電話:86-10-88235008 Email:ihep@ihep.ac.cn
中國(guó)科學(xué)院高能物理研究所 備案序號(hào):京ICP備05002790號(hào)-1 文保網(wǎng)安備案號(hào): 110402500050