Identified charged-hadron production in p+Al, He 3 +Au, and Cu+Au collisions at sNN =200 GeV and in U+ U collisions at sNN =193 GeV
Abdulameer, N.J. ; Christiansen, P. LU ; Oskarsson, A. LU ; Silvermyr, D. LU
; Stenlund, E.
LU
and Zou, L.
(2024)
In Physical Review C
109(5).
- Abstract
- The PHENIX experiment has performed a systematic study of identified charged-hadron (π±, K±, p, p¯) production at midrapidity in p+Al, He3+Au, and Cu+Au collisions at sNN=200GeV and U+U collisions at sNN=193GeV. Identified charged-hadron invariant transverse-momentum (pT) and transverse-mass (mT) spectra are presented and interpreted in terms of radially expanding thermalized systems. The particle ratios of K/π and p/π have been measured in different centrality ranges of large (Cu+Au and U+U) and small (p+Al and He3+Au) collision systems. The values of K/π ratios measured in all considered collision systems were found to be consistent with those measured in p+p collisions. However, the values of p/π ratios measured in large collision... (More)
- The PHENIX experiment has performed a systematic study of identified charged-hadron (π±, K±, p, p¯) production at midrapidity in p+Al, He3+Au, and Cu+Au collisions at sNN=200GeV and U+U collisions at sNN=193GeV. Identified charged-hadron invariant transverse-momentum (pT) and transverse-mass (mT) spectra are presented and interpreted in terms of radially expanding thermalized systems. The particle ratios of K/π and p/π have been measured in different centrality ranges of large (Cu+Au and U+U) and small (p+Al and He3+Au) collision systems. The values of K/π ratios measured in all considered collision systems were found to be consistent with those measured in p+p collisions. However, the values of p/π ratios measured in large collision systems reach the values of ≈0.6, which is a factor of ≈2 larger than in p+p collisions. These results can be qualitatively understood in terms of the baryon enhancement expected from hadronization by recombination. Identified charged-hadron nuclear-modification factors (RAB) are also presented. Enhancement of proton RAB values over meson RAB values was observed in central He3+Au, Cu+Au, and U+U collisions. The proton RAB values measured in the p+Al collision system were found to be consistent with RAB values of φ, π±, K±, and π0 mesons, which may indicate that the size of the system produced in p+Al collisions is too small for recombination to cause a noticeable increase in proton production. © 2024 American Physical Society. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/0649892f-368a-4fa6-b9a4-b9493d453ca1
- author
- Abdulameer, N.J.
; Christiansen, P.
LU
; Oskarsson, A.
LU
; Silvermyr, D.
LU
; Stenlund, E.
LU
and Zou, L.
- author collaboration
- organization
- publishing date
- 2024
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review C
- volume
- 109
- issue
- 5
- article number
- 054910
- publisher
- American Physical Society
- external identifiers
-
- scopus:85193813383
- ISSN
- 2469-9985
- DOI
- 10.1103/PhysRevC.109.054910
- language
- English
- LU publication?
- yes
- id
- 0649892f-368a-4fa6-b9a4-b9493d453ca1
- date added to LUP
- 2024-05-31 10:56:10
- date last changed
- 2024-05-31 10:56:58
@article{0649892f-368a-4fa6-b9a4-b9493d453ca1,
abstract = {{The PHENIX experiment has performed a systematic study of identified charged-hadron (π±, K±, p, p¯) production at midrapidity in p+Al, He3+Au, and Cu+Au collisions at sNN=200GeV and U+U collisions at sNN=193GeV. Identified charged-hadron invariant transverse-momentum (pT) and transverse-mass (mT) spectra are presented and interpreted in terms of radially expanding thermalized systems. The particle ratios of K/π and p/π have been measured in different centrality ranges of large (Cu+Au and U+U) and small (p+Al and He3+Au) collision systems. The values of K/π ratios measured in all considered collision systems were found to be consistent with those measured in p+p collisions. However, the values of p/π ratios measured in large collision systems reach the values of ≈0.6, which is a factor of ≈2 larger than in p+p collisions. These results can be qualitatively understood in terms of the baryon enhancement expected from hadronization by recombination. Identified charged-hadron nuclear-modification factors (RAB) are also presented. Enhancement of proton RAB values over meson RAB values was observed in central He3+Au, Cu+Au, and U+U collisions. The proton RAB values measured in the p+Al collision system were found to be consistent with RAB values of φ, π±, K±, and π0 mesons, which may indicate that the size of the system produced in p+Al collisions is too small for recombination to cause a noticeable increase in proton production. © 2024 American Physical Society.}},
author = {{Abdulameer, N.J. and Christiansen, P. and Oskarsson, A. and Silvermyr, D. and Stenlund, E. and Zou, L.}},
issn = {{2469-9985}},
language = {{eng}},
number = {{5}},
publisher = {{American Physical Society}},
series = {{Physical Review C}},
title = {{Identified charged-hadron production in p+Al, He 3 +Au, and Cu+Au collisions at sNN =200 GeV and in U+ U collisions at sNN =193 GeV}},
url = {{http://dx.doi.org/10.1103/PhysRevC.109.054910}},
doi = {{10.1103/PhysRevC.109.054910}},
volume = {{109}},
year = {{2024}},
}