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更正：在RHIC中√sNN = 3 GeV Au+Au碰撞中部分子集体的消失[物理学]。列托人。[au:] [B]

IF 4.5 2区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS

Physics Letters B Pub Date : 2025-09-28 DOI:10.1016/j.physletb.2025.139912

STAR Collaboration , D. Isenhower , J.L. Drachenberg , M. Daugherity , L. Adamczyk , L. Fulek , M. Przybycien , R. Sikora , I. Alekseev , D.N. Svirida , I.G. Bordyuzhin , D.G. Underwood , H.M. Spinka , M. Zurek , A. Hamed , F.M. Fawzi , M.S. Abdallah , J. Jia , A. Jentsch , A. Kiselev , T. Liu

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引用次数: 0

摘要

我们报告了在sNN = 3 GeV的Au+Au碰撞中强子（π±，K±，KS0, p， ϕ， Λ和Ξ−）的定向流v1和椭圆流v2的测量，以及在27和54.4 GeV的（π±，K±，p和p）的v2与STAR实验。而在两个高能量的中中心碰撞中，成分夸克数（NCQ）标度保持不变，在3 GeV时，所有强子的中快速度v2都为负，NCQ标度不存在。此外，几乎所有观测到的强子在中速时的v1斜率都是正的，这意味着重子相互作用是排斥性的。在输运模型计算中，重子平均场可以再现3 GeV时负v2和正v1斜率的特征。这些结果表明，这种碰撞中的介质很可能具有重子相互作用的特征。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Erratum: Disappearance of partonic collectivity in √ sNN = 3 GeV Au+Au collisions at RHIC [Phys. Lett. B 827, 137003 (2022)]

We report on the measurements of directed flow

v_{1}

and elliptic flow

v_{2}

for hadrons (

π^{\pm}

K^{\pm}

K_{S}^{0}

p

ϕ

Λ

and

Ξ^{-}

) from Au+Au collisions at

\sqrt{s_{N N}}

= 3 GeV and

v_{2}

for (

π^{\pm}

K^{\pm}

p

and

\overline{p}

) at 27 and 54.4 GeV with the STAR experiment. While at the two higher energy midcentral collisions the number-of-constituent-quark (NCQ) scaling holds, at 3 GeV the

v_{2}

at midrapidity is negative for all hadrons and the NCQ scaling is absent. In addition, the

v_{1}

slopes at midrapidity for almost all observed hadrons are found to be positive, implying dominant repulsive baryonic interactions. The features of negative

v_{2}

and positive

v_{1}

slope at 3 GeV can be reproduced with a baryonic mean-field in transport model calculations. These results imply that the medium in such collisions is likely characterized by baryonic interactions.

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来源期刊

Physics Letters B 物理-物理：综合

CiteScore

9.10

自引率

6.80%

发文量

647

审稿时长

3 months

期刊介绍： Physics Letters B ensures the rapid publication of important new results in particle physics, nuclear physics and cosmology. Specialized editors are responsible for contributions in experimental nuclear physics, theoretical nuclear physics, experimental high-energy physics, theoretical high-energy physics, and astrophysics.