Low-mass vector-meson production at forward rapidity in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>p</mml:mi> <mml:mo>+</mml:mo> <mml:mi>p</mml:mi> </mml:mrow> </mml:math> and <mml:math xmlns:mml="http://www.w3.org/1

The PHENIX experiment at the Relativistic Heavy Ion Collider has measured low-mass vector-meson ($\ensuremath{\omega}+\ensuremath{\rho}$ and $\ensuremath{\phi}$) production through the dimuon decay channel at forward rapidity $(1.2&lt;|\text{y}|&lt;2.2)$ in $p+p$ and $\mathrm{Au}+\mathrm{Au}$ collisions at $\sqrt{{s}_{{}_{NN}}}=200$ GeV. The low-mass vector-meson yield and nuclear-modification factor were measured as a function of the average number of participating nucleons, $\ensuremath{\langle}{N}_{\mathrm{part}}\ensuremath{\rangle}$, and the transverse momentum ${p}_{T}$. These results were compared with those obtained via the kaon decay channel in a similar ${p}_{T}$ range at midrapidity. The nuclear-modification factors in both rapidity regions are consistent within the uncertainties. A comparison of the $\ensuremath{\omega}+\ensuremath{\rho}$ and $J/\ensuremath{\psi}$ mesons reveals that the light and heavy flavors are consistently suppressed across both ${p}_{T}$ and $\ensuremath{\langle}{N}_{\mathrm{part}}\ensuremath{\rangle}$. In contrast, the $\ensuremath{\phi}$ meson displays a nuclear-modification factor consistent with unity, suggesting strangeness enhancement in the medium formed.

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Publication Details

Journal
Physical review. C
Published
2025-09-09
DOI
https://doi.org/10.1103/s25h-my1f
Primary Topic
High-Energy Particle Collisions Research
Type
article
Field-Weighted Citation Impact
0.00
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article

Low-mass vector-meson production at forward rapidity in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>p</mml:mi> <mml:mo>+</mml:mo> <mml:mi>p</mml:mi> </mml:mrow> </mml:math> and <mml:math xmlns:mml="http://www.w3.org/1

Karl J. Friston
Physical review. C
High-Energy Particle Collisions Research
article

Low-mass vector-meson production at forward rapidity in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>p</mml:mi> <mml:mo>+</mml:mo> <mml:mi>p</mml:mi> </mml:mrow> </mml:math> and <mml:math xmlns:mml="http://www.w3.org/1

Karl J. Friston
article en

Abstract

The PHENIX experiment at the Relativistic Heavy Ion Collider has measured low-mass vector-meson ($\ensuremath{\omega}+\ensuremath{\rho}$ and $\ensuremath{\phi}$) production through the dimuon decay channel at forward rapidity $(1.2&lt;|\text{y}|&lt;2.2)$ in $p+p$ and $\mathrm{Au}+\mathrm{Au}$ collisions at $\sqrt{{s}_{{}_{NN}}}=200$ GeV. The low-mass vector-meson yield and nuclear-modification factor were measured as a function of the average number of participating nucleons, $\ensuremath{\langle}{N}_{\mathrm{part}}\ensuremath{\rangle}$, and the transverse momentum ${p}_{T}$. These results were compared with those obtained via the kaon decay channel in a similar ${p}_{T}$ range at midrapidity. The nuclear-modification factors in both rapidity regions are consistent within the uncertainties. A comparison of the $\ensuremath{\omega}+\ensuremath{\rho}$ and $J/\ensuremath{\psi}$ mesons reveals that the light and heavy flavors are consistently suppressed across both ${p}_{T}$ and $\ensuremath{\langle}{N}_{\mathrm{part}}\ensuremath{\rangle}$. In contrast, the $\ensuremath{\phi}$ meson displays a nuclear-modification factor consistent with unity, suggesting strangeness enhancement in the medium formed.

Physical review. CVol. 112(6)
New Mexico State University (US), Université Claude Bernard Lyon 1 (FR), Florida State University (US), University of California, Riverside (US), Eötvös Loránd University (HU), Hiroshima University (JP), Tokyo Institute of Technology (JP), Japan Atomic Energy Agency (JP), Lawrence Livermore National Laboratory (US), Oak Ridge National Laboratory (US), Centre National de la Recherche Scientifique (FR), University of Debrecen (HU), Bhabha Atomic Research Centre (IN), Rikkyo University (JP), Los Alamos National Laboratory (US), Howard University (US), High Energy Accelerator Research Organization (JP), Seoul National University (KR), University of Tsukuba (JP), Augustana University (US), United States Merchant Marine Academy (US), University of Illinois Urbana-Champaign (US), University of North Carolina at Greensboro (US), Iowa State University (US), City University of New York (US), University of Zagreb (HR), Georgia State University (US), Lund University (SE), Yonsei University (KR), Vanderbilt University (US), Brookhaven National Laboratory (US), Peking University (CN), Peter the Great St. Petersburg Polytechnic University (RU), Charles University (CZ), Kyoto University (JP), Université Paris-Saclay (FR), University of Michigan (US), Kurchatov Institute (RU), University of Colorado System (US), University of Zambia (ZM), Institute for Particle and Nuclear Physics (HU), China Institute of Atomic Energy (CN), Institute for Nuclear Research (RU), Ohio University (US), Petersburg Nuclear Physics Institute (RU), Ewha Womans University Medical Center (KR), RIKEN Nishina Center (JP), Czech Technical University in Prague (CZ), Muhlenberg College (US), Weizmann Institute of Science (IL), Stony Brook University (US), Abilene Christian University (US), University of Maryland, College Park (US), The University of Tokyo (JP), University of Tennessee at Knoxville (US), Columbia University (US), Jeonbuk National University (KR), National Research Nuclear University MEPhI (RU), Banaras Hindu University (IN), University of Jyväskylä (FI), Nara Women's University (JP), Mississippi State University (US)
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High-Energy Particle Collisions Research
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