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

PHENIX Collaboration

doi:10.1103/PhysRevC.109.054910

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

PHENIX Collaboration

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Article number	054910
Journal	Physical Review C
Volume	109
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevC.109.054910
State	Published - May 2024

Funding

We thank the staff of the Collider-Accelerator and Physics Departments at Brookhaven National Laboratory and the staff of the other PHENIX participating institutions for their vital contributions. We acknowledge support from the Office of Nuclear Physics in the Office of Science of the U.S. Department of Energy, the National Science Foundation, Abilene Christian University Research Council, Research Foundation of SUNY, and Dean of the College of Arts and Sciences of Vanderbilt University (USA); Ministry of Education, Culture, Sports, Science, and Technology and the Japan Society for the Promotion of Science (Japan); Natural Science Foundation of China (People's Republic of China); Croatian Science Foundation and Ministry of Science and Education (Croatia); Ministry of Education, Youth, and Sports (Czech Republic); Centre National de la Recherche Scientifique, Commissariat \u00E0 l'\u00C9nergie Atomique, and Institut National de Physique Nucl\u00E9aire et de Physique des Particules (France); J. Bolyai Research Scholarship, EFOP, HUN-REN ATOMKI, NKFIH, and OTKA (Hungary); Department of Atomic Energy and Department of Science and Technology (India); Israel Science Foundation (Israel); Basic Science Research and SRC(CENuM) Programs through NRF funded by the Ministry of Education and the Ministry of Science and ICT (Korea); Ministry of Education and Science, Russian Academy of Sciences, Federal Agency of Atomic Energy (Russia); Knut and Alice Wallenberg Foundation (Sweden); University of Zambia, the Government of the Republic of Zambia (Zambia); the U.S. Civilian Research and Development Foundation for the Independent States of the Former Soviet Union; the Hungarian American Enterprise Scholarship Fund; the U.S.-Hungarian Fulbright Foundation; and the U.S.-Israel Binational Science Foundation. We thank the staff of the Collider-Accelerator and Physics Departments at Brookhaven National Laboratory and the staff of the other PHENIX participating institutions for their vital contributions. We acknowledge support from the Office of Nuclear Physics in the Office of Science of the U.S. Department of Energy, the National Science Foundation, Abilene Christian University Research Council, Research Foundation of SUNY, and Dean of the College of Arts and Sciences of Vanderbilt University (USA); Ministry of Education, Culture, Sports, Science, and Technology and the Japan Society for the Promotion of Science (Japan); Natural Science Foundation of China (People's Republic of China); Croatian Science Foundation and Ministry of Science and Education (Croatia); Ministry of Education, Youth, and Sports (Czech Republic); Centre National de la Recherche Scientifique, Commissariat l'nergie Atomique, and Institut National de Physique Nucleaire et de Physique des Particules (France); J. Bolyai Research Scholarship, EFOP, HUN-REN ATOMKI, NKFIH, and OTKA (Hungary); Department of Atomic Energy and Department of Science and Technology (India); Israel Science Foundation (Israel); Basic Science Research and SRC(CENuM) Programs through NRF funded by the Ministry of Education and the Ministry of Science and ICT (Korea); Ministry of Education and Science, Russian Academy of Sciences, Federal Agency of Atomic Energy (Russia); Knut and Alice Wallenberg Foundation (Sweden); University of Zambia, the Government of the Republic of Zambia (Zambia); the U.S. Civilian Research and Development Foundation for the Independent States of the Former Soviet Union; the Hungarian American Enterprise Scholarship Fund; the U.S.-Hungarian Fulbright Foundation; and the U.S.-Israel Binational Science Foundation.

Funders	Funder number
Ministry of Education
Basic Science Research
Semiconductor Research Corporation
College of Arts and Sciences of Vanderbilt University
National Science Foundation
Institut National de Physique Nucléaire et de Physique des Particules
Ministry of Science, ICT and Future Planning
CRDF Global
Japan Society for the Promotion of Science
Government of the Republic of Zambia
University of Zambia
Ministry of Education and Science
Commissariat l'nergie Atomique
Israel Science Foundation
Russian Academy of Sciences
Knut och Alice Wallenbergs Stiftelse
Haridus- ja Teadusministeerium
Centre National de la Recherche Scientifique, Commissariat à l'Énergie Atomique
Centre National de la Recherche Scientifique
U.S.-Hungarian Fulbright Foundation
Abilene Christian University Research Council
Nemzeti Kutatási Fejlesztési és Innovációs Hivatal
United States-Israel Binational Science Foundation
U.S. Department of Energy
CENuM
Department of Atomic Energy and Department of Science and Technology
Research Foundation of SUNY
Office of Science
Hungarian Scientific Research Fund
Hungarian-American Enterprise Scholarship Fund
Nuclear Physics
Ministerstvo Školství, Mládeže a Tělovýchovy
Federal Agency of Atomic Energy
National Retail Federation
Hrvatska Zaklada za Znanost
Ministry of Education, Culture, Sports, Science and Technology
National Natural Science Foundation of China

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10.1103/PhysRevC.109.054910

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@article{e06b782e68ca4c268e1facfe9ad61b30,

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",

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.",

author = "{PHENIX Collaboration} and Abdulameer, {N. J.} and U. Acharya and A. Adare and C. Aidala and Ajitanand, {N. N.} and Y. Akiba and R. Akimoto and J. Alexander and M. Alfred and V. Andrieux and K. Aoki and N. Apadula and H. Asano and Atomssa, {E. T.} and Awes, {T. C.} and B. Azmoun and V. Babintsev and M. Bai and X. Bai and Bandara, {N. S.} and B. Bannier and Barish, {K. N.} and S. Bathe and V. Baublis and C. Baumann and S. Baumgart and A. Bazilevsky and M. Beaumier and S. Beckman and R. Belmont and A. Berdnikov and Y. Berdnikov and L. Bichon and D. Black and B. Blankenship and Blau, {D. S.} and Bok, {J. S.} and V. Borisov and K. Boyle and Brooks, {M. L.} and J. Bryslawskyj and H. Buesching and V. Bumazhnov and S. Butsyk and S. Campbell and Roman, {V. Canoa} and V. Cianciolo and I. Garishvili and Lajoie, {J. G.} and Read, {K. F.}",

note = "Publisher Copyright: {\textcopyright} 2024 American Physical Society.",

year = "2024",

month = may,

doi = "10.1103/PhysRevC.109.054910",

language = "English",

volume = "109",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "5",

}

TY - JOUR

T1 - 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

AU - PHENIX Collaboration

AU - Abdulameer, N. J.

AU - Acharya, U.

AU - Adare, A.

AU - Aidala, C.

AU - Ajitanand, N. N.

AU - Akiba, Y.

AU - Akimoto, R.

AU - Alexander, J.

AU - Alfred, M.

AU - Andrieux, V.

AU - Aoki, K.

AU - Apadula, N.

AU - Asano, H.

AU - Atomssa, E. T.

AU - Awes, T. C.

AU - Azmoun, B.

AU - Babintsev, V.

AU - Bai, M.

AU - Bai, X.

AU - Bandara, N. S.

AU - Bannier, B.

AU - Barish, K. N.

AU - Bathe, S.

AU - Baublis, V.

AU - Baumann, C.

AU - Baumgart, S.

AU - Bazilevsky, A.

AU - Beaumier, M.

AU - Beckman, S.

AU - Belmont, R.

AU - Berdnikov, A.

AU - Berdnikov, Y.

AU - Bichon, L.

AU - Black, D.

AU - Blankenship, B.

AU - Blau, D. S.

AU - Bok, J. S.

AU - Borisov, V.

AU - Boyle, K.

AU - Brooks, M. L.

AU - Bryslawskyj, J.

AU - Buesching, H.

AU - Bumazhnov, V.

AU - Butsyk, S.

AU - Campbell, S.

AU - Roman, V. Canoa

AU - Cianciolo, V.

AU - Garishvili, I.

AU - Lajoie, J. G.

AU - Read, K. F.

PY - 2024/5

Y1 - 2024/5

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85193813383&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.109.054910

DO - 10.1103/PhysRevC.109.054910

M3 - Article

AN - SCOPUS:85193813383

SN - 2469-9985

VL - 109

JO - Physical Review C

JF - Physical Review C

IS - 5

M1 - 054910

ER -

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

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