Measurement of exclusive Υ photoproduction from protons in ppPb collisions at √sNN=5.02TeV; European Physical Journal C; Vol. 79, iss. 3
| Parent link: | European Physical Journal C Vol. 79, iss. 3.— 2019.— [277, 26 p.] |
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| Korporativní autor: | |
| Další autoři: | , , , , , , |
| Shrnutí: | 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. |
| Jazyk: | angličtina |
| Vydáno: |
2019
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| Témata: | |
| On-line přístup: | https://doi.org/10.1140/epjc/s10052-019-6774-8 |
| Médium: | Elektronický zdroj Kapitola |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=662646 |