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Dynamical fluctuations in global conserved quantities such as baryon number, strangeness, or charge may be observed near a QCD critical point. Results from new measurements of dynamical $K/\pi$ and $p/\pi$ ratio fluctuations are presented.…

核实验 · 物理学 2019-08-21 Terence J Tarnowsky

Preliminary results on inclusive neutral pion production in d-Au collisions at sqrt(s_NN) = 200 GeV in the pseudo-rapidity range 0<eta<1 are presented. The measurement is performed using the STAR Barrel Electromagnetic calorimeter (BEMC).…

核实验 · 物理学 2017-08-23 A. Mischke

Recent STAR measurements of the anisotropic flow coefficients (v$_{n}$) are presented for Au+Au collisions spanning the beam energy range $\sqrt{s_{NN}} = 7.7 - 200$ GeV. The measurements indicate dependences on the harmonic number ($n$),…

核实验 · 物理学 2019-10-31 Niseem Magdy

Data on hadron production at high transverse momentum ($p_T>$ 2 GeV/$c$) in p+p, d+Au, and Au+Au collisions at $\sqrt{s_{NN}$ = 200 GeV from the PHENIX experiment at RHIC are reviewed. The single inclusive spectrum of light hadrons produced…

核实验 · 物理学 2007-05-23 David d'Enterria

We report results on quarkonium production from the STAR experiment at the Relativistic Heavy-Ion Collider (RHIC). J/psi spectra in p+p and Cu+Cu collisions at sqrt(s) = 200 GeV with transverse momenta in the range of 0.5-14 GeV/c and 5-8…

核实验 · 物理学 2009-07-22 Zhangbu Xu , Thomas Ullrich

Measurements of inclusive hadron suppression and di-hadron azimuthal correlations have provided important insights into jet quenching in hot QCD matter. However, they do not provide access to the energy of the hard scattering and are…

核实验 · 物理学 2009-11-18 Elena Bruna

We present the STAR measurement of transverse momentum spectra at mid-rapidity for identified particles in p+p collisions at $\sqrt{s}$ = 200 GeV. These high statistics data are ideal for comparing to existing leading- and next-to-leading…

高能物理 - 实验 · 物理学 2007-07-11 Mark Heinz

A study of charged hadron production in d+Au and Au+Au collisions is presented at various collision energies (sqrt(s)=19.6 to 200 GeV per nucleon). Scaling and factorization features of transverse momentum and pseudorapidity distributions…

高能物理 - 实验 · 物理学 2019-08-14 Gabor I. Veres

Over the past several years the STAR experiment at RHIC has been contributing to our understanding of the proton structure. Through its instrumentation, STAR is well equipped to measure $W \rightarrow \nu + e$ in $\sqrt{s}$ = 500/510 GeV…

高能物理 - 实验 · 物理学 2015-07-30 M. Posik

Medium modification of particle spectra and the origin of collectivity in small collision systems are widely debated topics in the heavy-ion community. To address these open questions, we propose the study of particle production and…

核实验 · 物理学 2022-11-01 Tong Liu

The recent results at RHIC for direct $\gamma$-charged hadron azimuthal correlations in heavy-ion collisions are presented. We use these correlations to study the color charge density of the medium through the medium-induced modification of…

核实验 · 物理学 2008-10-23 A. M. Hamed

We present results on strange and multi-strange particle production in Au+Au collisions at $\sqrt{s_{NN}}=62.4$ GeV as measured with the STAR detector at RHIC. Mid-rapidity transverse momentum spectra and integrated yields of $K^{0}_{S}$,…

核实验 · 物理学 2011-02-21 The STAR Collaboration , M. M. Aggarwal

Measurements of identified particles over a broad $p_T$ range may provide strong evidence for the existence of a thermalized partonic state in heavy-ion collisions (\textit{i.e.} a quark-gluon plasma). Of particular interest are the…

核实验 · 物理学 2009-09-29 Paul Richard Sorensen

Measurements of anisotropic flow in heavy-ion collisions provide insight into the early stage of the system's evolution. This proceedings presents directed and elliptic flow for Au+Au collisions at 39, 11.5 and 7.7 GeV, and for Cu+Cu at…

核实验 · 物理学 2015-05-30 Yadav Pandit

We derive a simple analytical scaling function which embodies the predictions of high density QCD on the energy, centrality, rapidity, and atomic number dependences of hadron multiplicities in nuclear collisions. Both centrality and…

核理论 · 物理学 2008-11-26 D. Kharzeev , E. Levin

Heavy ion collisions at RHIC energies (Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV) exhibit significant new features as compared to earlier experiments at lower energies. The reaction is characterized by a high degree of transparency of the…

核实验 · 物理学 2015-06-26 Jens Jorgen Gaardhoje

The search for a possible critical point in the QCD phase diagram is ongoing in heavy ion collision experiments at RHIC which scan the phase diagram by scanning the beam energy; a coming upgrade will increase the luminosity and extend the…

高能物理 - 唯象学 · 物理学 2018-12-19 Jasmine Brewer , Swagato Mukherjee , Krishna Rajagopal , Yi Yin

We investigate baryon transport in relativistic heavy-ion collisions at energies reached at the CERN Super Proton Synchrotron, BNL Relativistic Heavy-Ion Collider (RHIC), and CERN LHC in the model of saturation. An analytical scaling law is…

高能物理 - 唯象学 · 物理学 2015-05-13 Yacine Mehtar-Tani , Georg Wolschin

The results of mid-rapidity ($0 < y < 0.8$) neutral pion spectra over an extended transverse momentum range ($1 < p_T < 12$ GeV/$c$) in $\sqrt{s_{NN}}$ = 200 GeV Au+Au collisions, measured by the STAR experiment, are presented. The neutral…

核实验 · 物理学 2010-01-27 STAR Collaboration , B. I. Abelev

The production of hadrons in heavy ions collisions at high $p_T$ provides an important information on mechanism of particle formation and constituent energy loss in medium. Such information is needed for search of a Critical Point and…

核实验 · 物理学 2019-08-21 M. V. Tokarev