Measurement of $\psi(2S)$ production in proton-lead and proton-proton collisions at  $\sqrt{s_{NN}} = 5.02~\mathrm{TeV}$

Measurement of $\psi(2S)$ production in proton-lead and proton-proton collisions at $\sqrt{s_{NN}} = 5.02~\mathrm{TeV}$

CMS

Collaboration

2017

13 pages

Report number:

CMS-PAS-HIN-16-015

Experiments:

CERN-LHC-CMS

View in:

CERN Document Server

pdf

reference search5 citations

Citations per year

Abstract:

This note reports the measurement of prompt

\psi

(2S) production in proton-lead (pPb) and proton-proton (pp) collisions at

\sqrt{s_{NN}} = 5.02~\mathrm{TeV}

. The results are based on pPb and pp data samples collected by CMS at the LHC corresponding to an integrated luminosity of 34.6 nb

^{-1}

and 28.0 pb

^{-1}

respectively. The nuclear modification factor,

R_{\rm pPb}

, is calculated for prompt

\psi

(2S) in the kinematic interval

4 < p_{T} < 30~\mathrm{GeV}/c

and

-2.4 < y_{\rm CM} < 1.93

, and compared to the

R_{\rm pPb}

of prompt

J/\psi

. The

R_{\rm pPb}

of the excited state is found to be smaller than the

R_{\rm pPb}

of the ground state, over the whole kinematic range studied. The suppression is more pronounced in the region of negative rapidity and

p_{T} < 10~\mathrm{GeV}/c

.

Note:

Preliminary results

Data
psi(3685): yield
psi(3685): production
kinematics
rapidity dependence
CERN LHC Coll
excited state
ground state
suppression
nucleus

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Figures(9)

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Measurement of ψ(2S)\psi(2S)ψ(2S) production in proton-lead and proton-proton collisions at sNN=5.02 TeV\sqrt{s_{NN}} = 5.02~\mathrm{TeV}sNN​​=5.02 TeV

Citations per year

J/ψ production in p Pb collisions

Measurement of $\psi(2S)$ production in proton-lead and proton-proton collisions at $\sqrt{s_{NN}} = 5.02~\mathrm{TeV}$