Strange hadron production in pp and pPb collisions at √sNN=5.02 TeV; Physical Review C; Vol. 101, iss. 6

Strange hadron production in pp and pPb collisions at √sNN=5.02 TeV; Physical Review C; Vol. 101, iss. 6

書誌詳細
Parent link:Physical Review C
Vol. 101, iss. 6.— 2020.— [064906, 21 р.]
団体著者: Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов
その他の著者: Sirunyan A. M., Tumasyan A. R., Adam W. Wolfgang, Ambrogi F. Federico, Tyurin N. E. Nikolay Evgenjevich, Babaev A. A. Anton Anatoljevich
要約:Title screen
The transverse momentum (pT) distributions of Λ, Ξ−, and Ω− baryons, their antiparticles, and K0S mesons are measured in proton-proton (pp) and proton-lead (pPb) collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV over a broad rapidity range. The data, corresponding to integrated luminosities of 40.2 nb−1 and 15.6 μb−1 for pp and pPb collisions, respectively, were collected by the CMS experiment. The nuclear modification factor RpPb, which is defined as the ratio of the particle yield in pPb collisions and a scaled pp reference, is measured for each particle. A strong dependence on particle species is observed in the pT range from 2 to 7 GeV, where RpPb for K0S is consistent with unity, while an enhancement ordered by strangeness content and/or particle mass is observed for the three baryons. In pPb collisions, the strange hadron production is asymmetric about the nucleon-nucleon center-of-mass rapidity. Enhancements, which depend on the particle type, are observed in the direction of the Pb beam. The results are compared with predictions from epos lhc, which includes parametrized radial flow. The model is in qualitative agreement with the RpPb data, but fails to describe the dependence on particle species in the yield asymmetries measured away from midrapidity in pPb collisions.
言語:英語
出版事項: 2020
主題:
труды учёных ТПУ
электронный ресурс
протон-протонные соударения
オンライン･アクセス:https://doi.org/10.1103/PhysRevC.101.064906
フォーマット: 電子媒体 図書の章
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=666375

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