# Study of $\psi(2S)$ production and cold nuclear matter effects in pPb collisions at $\sqrt{s_{NN}}=5~\mathrm{TeV}$

The production of ψ(2S) mesons is studied in dimuon final states using proton-lead (pPb) collision data collected by the LHCb detector. The data sample corresponds to an integrated luminosity of 1.6 nb$^{−1}$. The nucleon-nucleon centre-of-mass energy of the pPb collisions is $\sqrt{s_{N\,N}}=5$ TeV. The measurement is performed using ψ(2S) mesons with transverse momentum less than 14 GeV/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 $b\overline{b}$ cross-section in pPb collisions at $\sqrt{s_{N\,N}}=5$ TeV is obtained.
Dive into the research topics of 'Study of $\psi(2S)$ production and cold nuclear matter effects in pPb collisions at $\sqrt{s_{NN}}=5~\mathrm{TeV}$'. Together they form a unique fingerprint.