Study of $ψ(2S)$ production and cold nuclear matter effects in pPb collisions at $\sqrts_NN=5 \mathrmTeV$статья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 19 декабря 2016 г.
Аннотация:The production of ψ(2S) mesons is studied in dimuon final states using proton-lead collision data collected by the LHCb detector. The data sample corresponds to an integrated luminosity of 1.6nb−1. The nucleon-nucleon centre-of-mass energy of the proton-lead collisions is sNN−−−−√=5TeV. The measurement is performed using ψ(2S) mesons with transverse momentum less than 14GeV/c and rapidity y in the ranges 1.5<y<4.0 and −5.0<y<−2.5 in the nucleon-nucleon centre-of-mass system. The forward-backward production ratio and the nuclear modification factor are determined for ψ(2S) mesons. Using the production cross-section results of ψ(2S) and J/ψ mesons from b-hadron decays, the bb¯ cross-section in pPb collisions at sNN−−−−√=5TeV is obtained.