Measurement Of Exclusive ? Photoproduction From Protons İn Ppb Collisions At ? Snn = 5.02 TeV
Yükleniyor...
Tarih
2019
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
The CMS Collaboration
Erişim Hakkı
Özet
The exclusive photoproduction of ?(nS) meson states from protons, ? p ? ?(nS) p (with n = 1, 2, 3), is studied in ultraperipheral pPb collisions at a centre-of-mass energy per nucleon pair of ? sNN = 5.02 TeV. The measurement is performed using the ?(nS) ? ? + ? ? decay mode, with data collected by the CMS experiment corresponding to an integrated luminosity of 32.6 nb?1. Differential cross sections as functions of the ?(nS) transverse momentum squared p2T , and rapidity y, are presented. The ?(1S) hotoproduction cross section is extracted in the rapidity range |y| < 2.2, which corresponds to photon– roton centre-ofmass energies in the range 91 < W? p < 826 GeV. The data are compared to theoretical predictions based on perturbative quantum chromodynamics and to previous measurements.
Açıklama
Anahtar Kelimeler
Kaynak
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
Sayı
Künye
Eur. Phys. J. C (2019) 79:277
