J/$\psi$ production at midrapidity in p$-$Pb collisions at $\sqrt{s_{\rm NN}} = 8.16$ TeV

Acharya, Shreyasi; Adamova, Dagmar; Adler, Alexander; Aglieri Rinella, Gianluca; Agnello, Michelangelo; Agrawal, Neelima; Ahammed, Zubayer; Ahmad, Shakeel; Ahn, Sang Un; Ahuja, Ishaan

doi:10.1007/JHEP07(2023)137

J/ $\psi$ production at midrapidity in p $-$ Pb collisions at $\sqrt{s_{\rm NN}} = 8.16$ TeV

ALICE

Collaboration

Nov 25, 2022

31 pages

Published in:

JHEP 07 (2023) 137

Published: Jul 17, 2023

e-Print:

2211.14153 [nucl-ex]

DOI:

10.1007/JHEP07(2023)137

Report number:

CERN-EP-2022-256

Experiments:

CERN-LHC-ALICE,
CERN-LHC-ALICE

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Abstract: (Springer)

The production of inclusive, prompt and non-prompt J/ψ was studied for the first time at midrapidity (−1.37 < y

_{cms}

< 0.43) in p-Pb collisions at

\sqrt{s_{\textrm{NN}}}

= 8.16 TeV with the ALICE detector at the LHC. The inclusive J/ψ mesons were reconstructed in the dielectron decay channel in the transverse momentum (p

_{T}

) interval 0 < p

_{T}

< 14 GeV/c and the prompt and non-prompt contributions were separated on a statistical basis for p

_{T}

> 2 GeV/c. The study of the J/ψ mesons in the dielectron channel used for the first time in ALICE online single-electron triggers from the Transition Radiation Detector, providing a data sample corresponding to an integrated luminosity of 689 ± 13 μb

^{−1}

. The proton-proton reference cross section for inclusive J/ψ was obtained based on interpolations of measured data at different centre-of-mass energies and a universal function describing the p

_{T}

-differential J/ψ production cross sections. The p

_{T}

-differential nuclear modification factors R

_{pPb}

of inclusive, prompt, and non-prompt J/ψ are consistent with unity and described by theoretical models implementing only nuclear shadowing.[graphic not available: see fulltext]

Note:

31 pages, 9 captioned figures, 1 table, authors from page 26, published version, figures at http://alice-publications.web.cern.ch/node/8659

Hadron-Hadron Scattering
Quarkonium
J/psi(3100): production
nucleus: shadowing
p nucleus: scattering
ALICE
transverse momentum
CERN LHC Coll
trigger
statistical

References(0)

Figures(15)

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J/ψ\psiψ production at midrapidity in p−-−Pb collisions at sNN=8.16\sqrt{s_{\rm NN}} = 8.16sNN​​=8.16 TeV

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J/ $\psi$ production at midrapidity in p $-$ Pb collisions at $\sqrt{s_{\rm NN}} = 8.16$ TeV