Measurement of exclusive Υ photoproduction from protons in ppPb collisions at √sNN=5.02TeV; European Physical Journal C; Vol. 79, iss. 3

Measurement of exclusive Υ photoproduction from protons in ppPb collisions at √sNN=5.02TeV; European Physical Journal C; Vol. 79, iss. 3

Bibliographische Detailangaben
Parent link:European Physical Journal C
Vol. 79, iss. 3.— 2019.— [277, 26 p.]
Körperschaft: Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов
Weitere Verfasser: Sirunyan A. M., Tumasyan A. R., Adam W. Wolfgang, Ambrogi F. Federico, Asilar E. Ece, Bergauer T. Thomas, Babaev A. A. Anton Anatoljevich
Zusammenfassung:Title screen
The exclusive photoproduction of Υ(nS)Υ(nS) meson states from protons, γp→Υ(nS)pγp→Υ(nS)p (with n=1,2,3n=1,2,3), is studied in ultraperipheral ppPb collisions at a centre-of-mass energy per nucleon pair of sNN−−−√=5.02TeVsNN=5.02TeV. The measurement is performed using the Υ(nS)→μ+μ−Υ(nS)→μ+μ− decay mode, with data collected by the CMS experiment corresponding to an integrated luminosity of 32.6nb−1nb−1. Differential cross sections as functions of the Υ(nS)Υ(nS) transverse momentum squared p2TpT2, and rapidity y, are presented. The Υ(1S)Υ(1S) photoproduction cross section is extracted in the rapidity range |y|<2.2|y|<2.2, which corresponds to photon-proton centre-of-mass energies in the range 91<Wγp<826GeV91<Wγp<826GeV. The data are compared to theoretical predictions based on perturbative quantum chromodynamics and to previous measurements.
Sprache:Englisch
Veröffentlicht: 2019
Schlagworte:
электронный ресурс
труды учёных ТПУ
CMS
UPC
photoproduction
pPb
Online-Zugang:https://doi.org/10.1140/epjc/s10052-019-6774-8
Format: Elektronisch Buchkapitel
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=662646

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