Energy dependence of intermittency for charged hadrons in Au+Au collisions at RHIC

Vipul Bairathi; Sonia Kabana; STAR Collaboration

doi:10.1016/J.PHYSLETB.2023.138165

Energy dependence of intermittency for charged hadrons in Au+Au collisions at RHIC

Título traducido de la contribución: Dependencia energética de la intermitencia para hadrones cargados en colisiones Au+Au en el RHIC

Vipul Bairathi
, Sonia Kabana
, STAR Collaboration

Instituto de Alta Investigación

Universidad de Tarapacá

Producción científica: Contribución a una revista › Artículo › revisión exhaustiva

22 Citas (Scopus)

Resumen

Las fluctuaciones de densidad cerca del punto crítico de QCD pueden investigarse mediante un análisis de intermitencia en colisiones relativistas de iones pesados. Reportamos la primera medición de intermitencia en colisiones Au+Au en s = 7.7-200 GeV medidas por el experimento STAR en el Colisionador de Iones Pesados Relativistas (RHIC). Los momentos factoriales escalados de hadrones cargados identificados se analizan a media rapidez y dentro del espacio de fase de momento transversal. Observamos un comportamiento de ley de potencia de los momentos factoriales escalados en colisiones Au+Au y una disminución en el exponente de escala extraído (ν) de colisiones periféricas a centrales. El ν es consistente con una constante para diferentes energías de colisión en las colisiones medio-centrales (10-40%). Además, el ν en las colisiones Au+Au más centrales del 0-5% exhibe una dependencia de energía no monótona que alcanza un mínimo alrededor de s = 27 GeV. Se discuten las implicaciones físicas en la estructura de fase de QCD.

Título traducido de la contribución	Dependencia energética de la intermitencia para hadrones cargados en colisiones Au+Au en el RHIC
Idioma original	Inglés
Número de artículo	138165
Páginas (desde-hasta)	1-9
Número de páginas	9
Publicación	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volumen	845
DOI	https://doi.org/10.1016/J.PHYSLETB.2023.138165
Estado	Publicada - 10 oct. 2023

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title = "Energy dependence of intermittency for charged hadrons in Au+Au collisions at RHIC",

abstract = "Density fluctuations near the QCD critical point can be probed via an intermittency analysis in relativistic heavy-ion collisions. We report the first measurement of intermittency in Au+Au collisions at s = 7.7-200 GeV measured by the STAR experiment at the Relativistic Heavy Ion Collider (RHIC). The scaled factorial moments of identified charged hadrons are analyzed at mid-rapidity and within the transverse momentum phase space. We observe a power-law behavior of scaled factorial moments in Au+Au collisions and a decrease in the extracted scaling exponent (ν) from peripheral to central collisions. The ν is consistent with a constant for different collisions energies in the mid-central (10-40\%) collisions. Moreover, the ν in the 0-5\% most central Au+Au collisions exhibits a non-monotonic energy dependence that reaches a minimum around s = 27 GeV. The physics implications on the QCD phase structure are discussed.",

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AU - Bairathi, Vipul

AU - Kabana, Sonia

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N2 - Density fluctuations near the QCD critical point can be probed via an intermittency analysis in relativistic heavy-ion collisions. We report the first measurement of intermittency in Au+Au collisions at s = 7.7-200 GeV measured by the STAR experiment at the Relativistic Heavy Ion Collider (RHIC). The scaled factorial moments of identified charged hadrons are analyzed at mid-rapidity and within the transverse momentum phase space. We observe a power-law behavior of scaled factorial moments in Au+Au collisions and a decrease in the extracted scaling exponent (ν) from peripheral to central collisions. The ν is consistent with a constant for different collisions energies in the mid-central (10-40%) collisions. Moreover, the ν in the 0-5% most central Au+Au collisions exhibits a non-monotonic energy dependence that reaches a minimum around s = 27 GeV. The physics implications on the QCD phase structure are discussed.

AB - Density fluctuations near the QCD critical point can be probed via an intermittency analysis in relativistic heavy-ion collisions. We report the first measurement of intermittency in Au+Au collisions at s = 7.7-200 GeV measured by the STAR experiment at the Relativistic Heavy Ion Collider (RHIC). The scaled factorial moments of identified charged hadrons are analyzed at mid-rapidity and within the transverse momentum phase space. We observe a power-law behavior of scaled factorial moments in Au+Au collisions and a decrease in the extracted scaling exponent (ν) from peripheral to central collisions. The ν is consistent with a constant for different collisions energies in the mid-central (10-40%) collisions. Moreover, the ν in the 0-5% most central Au+Au collisions exhibits a non-monotonic energy dependence that reaches a minimum around s = 27 GeV. The physics implications on the QCD phase structure are discussed.

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Energy dependence of intermittency for charged hadrons in Au+Au collisions at RHIC

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