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We investigate the suppression factor and the azimuthal correlation function for high $p_T$ hadrons in central Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV by using a dynamical model in which hydrodynamics is combined with explicitly…

核理论 · 物理学 2009-11-10 Tetsufumi Hirano , Yasushi Nara

One of the most active areas of investigation in relativistic heavy-ion collisions is the study of the jet quenching phenomenon whereby hard partons lose their energy as they traverse the hot, dense matter created in such collisions. Strong…

核实验 · 物理学 2019-08-14 Matthew Nguyen

In this work, we pave the way to calculate the productions of $\omega$ and $K^0_{\rm S}$ mesons at large $p_T$ in p+p and A+A collisions at the RHIC and the LHC. The $\omega$ meson fragmentation functions (FFs) in vacuum at next-to-leading…

核理论 · 物理学 2019-06-25 Guo-Yang Ma , Wei Dai , Ben-Wei Zhang , En-Ke Wang

Within the next-to-leading order (NLO) perturbative QCD (pQCD) parton model, suppression of away-side hadron spectra associated with a high $p_{T}$ photon due to parton energy loss is studied in high-energy heavy-ion collisions. Dictated by…

核理论 · 物理学 2009-09-02 Hanzhong Zhang , J. F. Owens , Enke Wang , Xin-Nian Wang

Experimental results on high transverse momentum (leading) hadron spectra in nucleus-nucleus collisions in the range sqrt(s_NN) = 20 -- 200 GeV are reviewed with an emphasis on the observed suppression compared to free space production in…

核实验 · 物理学 2009-01-07 David d'Enterria

Using a recently-developed perturbative-QCD approach for jet evolution in a dense quark-gluon plasma, we study the nuclear modification factor for the jet fragmentation function. The qualitative behaviour that we find is in agreement with…

高能物理 - 唯象学 · 物理学 2020-12-02 P. Caucal , E. Iancu , A. H. Mueller , G. Soyez

Modified thermal distributions (dispersion relations) are introduced within both the MATTER and LBT event generators used to describe jet modification in a heavy-ion collision, within the JETSCAPE framework. Hard partons, propagating…

高能物理 - 唯象学 · 物理学 2026-01-08 Ritoban Datta , Abhijit Majumder

In the BDMPSZ model, the energy loss of an outgoing parton in a medium $-dE/dx$ is the transport coefficient $\hat{q}$ times $L$ the length traveled. This results in jet quenching, which is well established. However BDMPSZ also predicts an…

核实验 · 物理学 2019-07-11 M. J. Tannenbaum

Medium modification of dihadron fragmentation functions due to gluon bremsstrahlung induced by multiple partonic scattering is studied in both deep-inelastic scattering (DIS) off large nuclei and high-energy heavy-ion collisions within the…

核理论 · 物理学 2008-11-26 A. Majumder , Enke Wang , Xin-Nian Wang

The QCD coupling alpha_s is determined from a combined analysis of experimental e+e- and e-p jet data confronted to theoretical predictions of the energy evolution of the parton-to-hadron fragmentation functions (FFs) moments…

高能物理 - 唯象学 · 物理学 2015-06-23 Redamy Pérez-Ramos , David d'Enterria

The NJL-jet model provides a framework for calculating fragmentation functions without the introduction of ad hoc parameters. We develop the NJL-jet model to investigate dihadron fragmentation functions (DFFs) of the form $D^{h_1…

高能物理 - 唯象学 · 物理学 2012-07-25 Andrew Casey , Hrayr H. Matevosyan , Anthony W. Thomas

While strong attenuation of single particle production and particle correlations has provided convincing evidence for large parton energy loss in the QGP, its application to jet tomography has inherent limitations due to the inclusive…

高能物理 - 唯象学 · 物理学 2009-11-18 Ben-Wei Zhang

Jet tomography, the study of differential energy loss of hard scattered partons to infer the density profile of the medium, is greatly improved by precise knowledge of the initial energy of the hard probe. As photons are not strongly…

核实验 · 物理学 2008-11-26 Matthew Nguyen

We propose the characterization of fragmentation functions by the energy fraction x, a hadron takes away from the energy of the jet measured in the frame co-moving with the jet. Besides, we propose the usage of the jet mass as the…

高能物理 - 唯象学 · 物理学 2017-03-08 Karoly Urmossy

Dihadron correlations at high transverse momentum in d+Au collisions at sqrt(s_NN) = 200 GeV at midrapidity are measured by the PHENIX experiment at the Relativistic Heavy Ion Collider (RHIC). From these correlations we extract several…

核实验 · 物理学 2016-09-08 PHENIX Collaboration , S. S. Adler

Direct photon-hadron correlations are a golden channel to study parton in-medium energy loss in QGP. The modification of the effective fragmentation function for the away-side jet can be measured by comparing integrated away-side yields of…

核实验 · 物理学 2019-08-13 Huijun Ge

Within the framework of generalized factorization of higher-twist contributions to semi-inclusive cross section of deeply inelastic scattering off a large nucleus, multiple parton scattering leads to an effective medium-modified…

高能物理 - 唯象学 · 物理学 2014-11-20 Wei-tian Deng , Xin-Nian Wang

We present the first NLO QCD analysis of single-diffractive dijet production in proton-antiproton collisions. By comparing the ratio of single- and non-diffractive cross sections to data from the Tevatron, the rapidity-gap survival…

高能物理 - 唯象学 · 物理学 2010-11-19 M. Klasen

The transverse momentum $j_{\rm T}$-dependent jet fragmentation functions have been investigated in proton+proton (p $+$ p) and proton+lead (p $+$ Pb) collisions at $\sqrt{s_{\rm NN}} = 5.02~{\rm TeV}$ with a multiphase transport model…

高能物理 - 唯象学 · 物理学 2024-02-22 Xiang-Pan Duan , Wenbin Zhao , Guo-Liang Ma

The measurement of the production of single muons from heavy-flavour hadron decays at forward rapidity in Pb--Pb collisions at $\sqrt{s_{\rm NN}} = 5.02~{\rm TeV}$ collected in 2015 is presented as a function of transverse momentum ($p_{\rm…

高能物理 - 实验 · 物理学 2017-06-27 Zuman Zhang