EXCLUSIVE PRODUCTION OF VECTOR MESONS AT THE LHCb

被引：0

作者：

Garcia, Lucas Meyer ^{[1
]}

机构：

[1] UFRJ Fed Univ Rio de Janeiro, Rio De Janeiro, Brazil

来源：

ACTA PHYSICA POLONICA B PROCEEDINGS SUPPLEMENT | 2023年 / 16卷 / 05期

关键词：

D O I：

10.5506/APhysPolBSupp.16.5-A13

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Studies of the central exclusive production (CEP) of vector mesons in pp collisions at the LHCb are reported. A search is performed for the CEP of charmonium pairs using data corresponding to an integrated luminosity of 3 fb(-1) collected at centre-of-mass energies of 7 and 8 TeV. Pairs of J/psi J/psi and J/psi psi(2S) are observed in the absence of any other activity inside the LHCb acceptance and the measured cross sections are consistent with theoretical expectations. A study of CEP of gamma(nS) states based on the same data is presented. The gamma(1S) cross section is measured as a function of rapidity and is found to be in good agreement with the Standard Model predictions. The CEP of J/psi and psi(2S) mesons is measured at root s = 13 TeV and backgrounds are significantly reduced compared to previous measurements through the use of forward shower counters.

引用

页数：6

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