Measurement of the production cross section ratio σ(χb2(1P))/σ(χb1(1P)) in pp collisions at √s=8TeV
Yazarlar (1)
Makale Türü Açık Erişim Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Physics Letters Section B Nuclear Elementary Particle and High Energy Physics (Q1)
Dergi ISSN 0370-2693 Dergi Bilgileri (2015)
Makale Dili İngilizce Basım Tarihi 04-2015
Cilt / Sayı / Sayfa 743 / 1 / 383–402 DOI 10.1016/j.physletb.2015.02.048
Makale Linki https://www.sciencedirect.com/science/article/am/pii/S0370269315001392?via%3Dihub
UAK Araştırma Alanları
Fen Bilimleri ve Matematik
Özet
A measurement of the production cross section ratio σ(χb2(1P))/σ(χb1(1P))is presented. The χb1(1P)and χb2(1P)bottomonium states, promptly produced in pp collisions at √s=8TeV, are detected by the CMS experiment at the CERN LHC through their radiative decays χb1,2(1P) →ϒ(1S) +γ. The emitted photons are measured through their conversion to e+e−pairs, whose reconstruction allows the two states to be resolved. The ϒ(1S)is measured through its decay to two muons. An event sample corresponding to an integrated luminosity of 20.7fb−1is used to measure the cross section ratio in a phase-space region defined by the photon pseudorapidity, |ηγ| <1.0; the ϒ(1S)rapidity, |yϒ| <1.5; and the ϒ(1S)transverse momentum, 7
Anahtar Kelimeler
Bottomonium | CMS | P-wave states | Quarkonium production