Forward rapidity J/ψ production as a function of charged-particle multiplicity in pp collisions at √s = 5.02 and 13 TeV
(2022) In Journal of High Energy Physics 2022(6).- Abstract
- The production of J/ψ is measured as a function of charged-particle multiplicity at forward rapidity in proton-proton (pp) collisions at center-of-mass energies s = 5.02 and 13 TeV. The J/ψ mesons are reconstructed via their decay into dimuons in the rapidity interval (2.5 < y < 4.0), whereas the charged-particle multiplicity density (dNch/dη) is measured at midrapidity (|η| < 1). The production rate as a function of multiplicity is reported as the ratio of the yield in a given multiplicity interval to the multiplicity-integrated one. This observable shows a linear increase with charged-particle multiplicity normalized to the corresponding average value for inelastic events (dNch/dη/〈dNch/dη〉), at both the colliding energies.... (More)
- The production of J/ψ is measured as a function of charged-particle multiplicity at forward rapidity in proton-proton (pp) collisions at center-of-mass energies s = 5.02 and 13 TeV. The J/ψ mesons are reconstructed via their decay into dimuons in the rapidity interval (2.5 < y < 4.0), whereas the charged-particle multiplicity density (dNch/dη) is measured at midrapidity (|η| < 1). The production rate as a function of multiplicity is reported as the ratio of the yield in a given multiplicity interval to the multiplicity-integrated one. This observable shows a linear increase with charged-particle multiplicity normalized to the corresponding average value for inelastic events (dNch/dη/〈dNch/dη〉), at both the colliding energies. Measurements are compared with available ALICE results at midrapidity and theoretical model calculations. First measurement of the mean transverse momentum (〈pT〉) of J/ψ in pp collisions exhibits an increasing trend as a function of dNch/dη/〈dNch/dη〉 showing a saturation towards high charged-particle multiplicities. [Figure not available: see fulltext.] © 2022, The Author(s). (Less)
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- author
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- publishing date
- 2022
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Hadron-Hadron Scattering
- in
- Journal of High Energy Physics
- volume
- 2022
- issue
- 6
- article number
- 15
- publisher
- Springer
- external identifiers
-
- scopus:85134017459
- ISSN
- 1029-8479
- DOI
- 10.1007/JHEP06(2022)015
- language
- English
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- yes
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- a44fa1ad-f6b6-41d0-a151-1011d5ff7389
- date added to LUP
- 2022-09-14 09:05:56
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- 2023-05-11 09:06:56
@article{a44fa1ad-f6b6-41d0-a151-1011d5ff7389, abstract = {{The production of J/ψ is measured as a function of charged-particle multiplicity at forward rapidity in proton-proton (pp) collisions at center-of-mass energies s = 5.02 and 13 TeV. The J/ψ mesons are reconstructed via their decay into dimuons in the rapidity interval (2.5 < y < 4.0), whereas the charged-particle multiplicity density (dNch/dη) is measured at midrapidity (|η| < 1). The production rate as a function of multiplicity is reported as the ratio of the yield in a given multiplicity interval to the multiplicity-integrated one. This observable shows a linear increase with charged-particle multiplicity normalized to the corresponding average value for inelastic events (dNch/dη/〈dNch/dη〉), at both the colliding energies. Measurements are compared with available ALICE results at midrapidity and theoretical model calculations. First measurement of the mean transverse momentum (〈pT〉) of J/ψ in pp collisions exhibits an increasing trend as a function of dNch/dη/〈dNch/dη〉 showing a saturation towards high charged-particle multiplicities. [Figure not available: see fulltext.] © 2022, The Author(s).}}, author = {{Acharya, S. and Adolfsson, J. and Basu, S. and Christiansen, P. and Matonoha, O. and Nassirpour, A.F. and Ohlson, A. and Oskarsson, A. and Richert, T. and Rueda, O.V. and Silvermyr, D. and Zurlo, N.}}, issn = {{1029-8479}}, keywords = {{Hadron-Hadron Scattering}}, language = {{eng}}, number = {{6}}, publisher = {{Springer}}, series = {{Journal of High Energy Physics}}, title = {{Forward rapidity J/ψ production as a function of charged-particle multiplicity in pp collisions at √s = 5.02 and 13 TeV}}, url = {{http://dx.doi.org/10.1007/JHEP06(2022)015}}, doi = {{10.1007/JHEP06(2022)015}}, volume = {{2022}}, year = {{2022}}, }