J/ψ and ψ (2S) production at forward rapidity in p+p collisions at s =510 GeV
(2020) In Physical Review D 101(5).- Abstract
- The PHENIX experiment at the Relativistic Heavy Ion Collider has measured the differential cross section, mean transverse momentum, mean transverse momentum squared of inclusive J/ψ, and cross section ratio of ψ(2S) to J/ψ at forward rapidity in p+p collisions at s=510 GeV via the dimuon decay channel. Comparison is made to inclusive J/ψ cross sections measured at s=200 GeV and 2.76-13 TeV. The result is also compared to leading-order nonrelativistic QCD calculations coupled to a color-glass-condensate description of the low-x gluons in the proton at low transverse momentum (pT) and to next-to-leading order nonrelativistic QCD calculations for the rest of the pT range. These calculations overestimate the data at low pT. While consistent... (More)
- The PHENIX experiment at the Relativistic Heavy Ion Collider has measured the differential cross section, mean transverse momentum, mean transverse momentum squared of inclusive J/ψ, and cross section ratio of ψ(2S) to J/ψ at forward rapidity in p+p collisions at s=510 GeV via the dimuon decay channel. Comparison is made to inclusive J/ψ cross sections measured at s=200 GeV and 2.76-13 TeV. The result is also compared to leading-order nonrelativistic QCD calculations coupled to a color-glass-condensate description of the low-x gluons in the proton at low transverse momentum (pT) and to next-to-leading order nonrelativistic QCD calculations for the rest of the pT range. These calculations overestimate the data at low pT. While consistent with the data within uncertainties above ≈3 GeV/c, the calculations are systematically below the data. The total cross section times the branching ratio is BR d 10 GeV/c)=54.3±0.5(stat)±5.5(syst) nb. (Less)
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https://lup.lub.lu.se/record/4d9463e7-fbb2-4899-a446-84c2df2eeecc
- author
- Acharya, U.A. ; Oskarsson, A. LU ; Silvermyr, D. LU and Zou, L.
- author collaboration
- organization
- publishing date
- 2020
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review D
- volume
- 101
- issue
- 5
- article number
- 052006
- publisher
- American Physical Society
- external identifiers
-
- scopus:85083446113
- ISSN
- 2470-0010
- DOI
- 10.1103/PhysRevD.101.052006
- language
- English
- LU publication?
- yes
- id
- 4d9463e7-fbb2-4899-a446-84c2df2eeecc
- date added to LUP
- 2022-04-07 10:41:05
- date last changed
- 2023-04-02 23:19:08
@article{4d9463e7-fbb2-4899-a446-84c2df2eeecc, abstract = {{The PHENIX experiment at the Relativistic Heavy Ion Collider has measured the differential cross section, mean transverse momentum, mean transverse momentum squared of inclusive J/ψ, and cross section ratio of ψ(2S) to J/ψ at forward rapidity in p+p collisions at s=510 GeV via the dimuon decay channel. Comparison is made to inclusive J/ψ cross sections measured at s=200 GeV and 2.76-13 TeV. The result is also compared to leading-order nonrelativistic QCD calculations coupled to a color-glass-condensate description of the low-x gluons in the proton at low transverse momentum (pT) and to next-to-leading order nonrelativistic QCD calculations for the rest of the pT range. These calculations overestimate the data at low pT. While consistent with the data within uncertainties above ≈3 GeV/c, the calculations are systematically below the data. The total cross section times the branching ratio is BR d 10 GeV/c)=54.3±0.5(stat)±5.5(syst) nb.}}, author = {{Acharya, U.A. and Oskarsson, A. and Silvermyr, D. and Zou, L.}}, issn = {{2470-0010}}, language = {{eng}}, number = {{5}}, publisher = {{American Physical Society}}, series = {{Physical Review D}}, title = {{J/ψ and ψ (2S) production at forward rapidity in p+p collisions at s =510 GeV}}, url = {{http://dx.doi.org/10.1103/PhysRevD.101.052006}}, doi = {{10.1103/PhysRevD.101.052006}}, volume = {{101}}, year = {{2020}}, }