Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Energy dependence of forward-rapidity J / ψ and ψ(2 S) production in pp collisions at the LHC

S., Acharya ; Christiansen, P. LU ; Ljunggren, H. ; Oskarsson, A. LU ; Richert, T. LU ; Silvermyr, D. LU orcid ; Stenlund, E. LU ; Vislavicius, V. LU and J., Zmeskal (2017) In European Physical Journal C 77(6).
Abstract
We present results on transverse momentum (pT) and rapidity (y) differential production cross sections, mean transverse momentum and mean transverse momentum square of inclusive J / ψ and ψ(2 S) at forward rapidity (2.5 < y< 4) as well as ψ(2 S) -to-J / ψ cross section ratios. These quantities are measured in pp collisions at center of mass energies s=5.02 and 13 TeV with the ALICE detector. Both charmonium states are reconstructed in the dimuon decay channel, using the muon spectrometer. A comprehensive comparison to inclusive charmonium cross sections measured at s=2.76, 7 and 8 TeV is performed. A comparison to non-relativistic quantum chromodynamics and fixed-order next-to-leading logarithm calculations, which describe prompt and... (More)
We present results on transverse momentum (pT) and rapidity (y) differential production cross sections, mean transverse momentum and mean transverse momentum square of inclusive J / ψ and ψ(2 S) at forward rapidity (2.5 < y< 4) as well as ψ(2 S) -to-J / ψ cross section ratios. These quantities are measured in pp collisions at center of mass energies s=5.02 and 13 TeV with the ALICE detector. Both charmonium states are reconstructed in the dimuon decay channel, using the muon spectrometer. A comprehensive comparison to inclusive charmonium cross sections measured at s=2.76, 7 and 8 TeV is performed. A comparison to non-relativistic quantum chromodynamics and fixed-order next-to-leading logarithm calculations, which describe prompt and non-prompt charmonium production respectively, is also presented. A good description of the data is obtained over the full pT range, provided that both contributions are summed. In particular, it is found that for pT>15 GeV/c the non-prompt contribution reaches up to 50% of the total charmonium yield.
(Less)
Please use this url to cite or link to this publication:
author
; ; ; ; ; ; ; and
author collaboration
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
European Physical Journal C
volume
77
issue
6
article number
392
publisher
Springer
external identifiers
  • scopus:85020514164
ISSN
1434-6044
DOI
10.1140/epjc/s10052-017-4940-4
language
English
LU publication?
yes
id
403be1f5-86c4-4260-8bca-acb5ffae94e6
date added to LUP
2022-04-05 08:19:04
date last changed
2023-11-25 22:48:53
@article{403be1f5-86c4-4260-8bca-acb5ffae94e6,
  abstract     = {{We present results on transverse momentum (pT) and rapidity (y) differential production cross sections, mean transverse momentum and mean transverse momentum square of inclusive J / ψ and ψ(2 S) at forward rapidity (2.5 &lt; y&lt; 4) as well as ψ(2 S) -to-J / ψ cross section ratios. These quantities are measured in pp collisions at center of mass energies s=5.02 and 13 TeV with the ALICE detector. Both charmonium states are reconstructed in the dimuon decay channel, using the muon spectrometer. A comprehensive comparison to inclusive charmonium cross sections measured at s=2.76, 7 and 8 TeV is performed. A comparison to non-relativistic quantum chromodynamics and fixed-order next-to-leading logarithm calculations, which describe prompt and non-prompt charmonium production respectively, is also presented. A good description of the data is obtained over the full pT range, provided that both contributions are summed. In particular, it is found that for pT&gt;15 GeV/c the non-prompt contribution reaches up to 50% of the total charmonium yield. <br/>}},
  author       = {{S., Acharya and Christiansen, P. and Ljunggren, H. and Oskarsson, A. and Richert, T. and Silvermyr, D. and Stenlund, E. and Vislavicius, V. and J., Zmeskal}},
  issn         = {{1434-6044}},
  language     = {{eng}},
  number       = {{6}},
  publisher    = {{Springer}},
  series       = {{European Physical Journal C}},
  title        = {{Energy dependence of forward-rapidity J / ψ and ψ(2 S) production in pp collisions at the LHC}},
  url          = {{http://dx.doi.org/10.1140/epjc/s10052-017-4940-4}},
  doi          = {{10.1140/epjc/s10052-017-4940-4}},
  volume       = {{77}},
  year         = {{2017}},
}