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We calculate the medium modification factor $I_{pA}$ for the photon-tagged jet fragmentation functions for scenario with the quark-gluon plasma formation in $pA$ and $pp$ collisions. We perform calculations of radiative and collisional…

High Energy Physics - Phenomenology · Physics 2023-07-12 B. G. Zakharov

We discuss diffractive dissociation of gluons into heavy quark pairs. The particular mechanism is similar to the diffractive dissociation of virtual photons into quarks. The amplitude for the $g p \to Q \bar Q p$ is derived in the impact…

High Energy Physics - Phenomenology · Physics 2013-07-01 Antoni Szczurek , Marta Luszczak , Wolfgang Schafer

We investigate the real-time evolution of quarkonium bound states in a quark-gluon plasma in one dimension using an improved QCD based stochastic potential model. This model describes the quarkonium dynamics in terms of a Schr\"odinger…

Nuclear Theory · Physics 2018-02-07 Shiori Kajimoto , Yukinao Akamatsu , Masayuki Asakawa , Alexander Rothkopf

In a series of previous papers, we have presented a new approach, based on perturbative QCD, for the evolution of a jet in a dense quark-gluon plasma. In the original formulation, the plasma was assumed to be homogeneous and static. In this…

High Energy Physics - Phenomenology · Physics 2021-05-12 Paul Caucal , Edmond Iancu , Gregory Soyez

We have studied the hadronization of jet parton showers based on the quark recombination model. This is achieved by letting gluons at the end of the perturbative shower evolution undergo a non-perturbative splitting into quark and antiquark…

Nuclear Theory · Physics 2016-11-23 Rainer J. Fries , Kyongchol Han , Che Ming Ko

A thermodynamic quantum many-body $T$-matrix approach is employed to study the spectral and transport properties of the quark-gluon plasma at moderate temperatures where nonperturbative effects are essential. For the partonic two-body…

Nuclear Theory · Physics 2019-02-20 Shuai Y. F. Liu , Ralf Rapp

We investigate the heavy flavor dynamics in the quark-gluon plasma (QGP) medium created in p-Pb collisions at the CERN Large Hadron Collider (LHC). In the (3+1)-dimensional viscous hydrodynamics model describing QGP medium, the dynamics of…

A Linear Boltzmann Transport model within perturbative QCD is developed for the study of parton propagation inside the quark-gluon plasma. Both leading partons and thermal recoil partons are tracked so that one can also study jet-induced…

Nuclear Theory · Physics 2017-12-14 Yayun He , Tan Luo , Xin-Nian Wang , Yan Zhu

Production, elliptic flow and the nuclear modification factor of charm and bottom quarks are studied in central and non-central heavy-ion collisions at RHIC and LHC using the partonic transport model Boltzmann Approach of MultiParton…

High Energy Physics - Phenomenology · Physics 2011-02-11 Jan Uphoff , Oliver Fochler , Zhe Xu , Carsten Greiner

Employing QCD sum rules the in-medium modifications of scalar charm mesons in a cold nuclear matter environment are estimated. The mass splitting of D*-D*-bar is quantified.

Nuclear Theory · Physics 2011-05-18 Thomas Hilger , Burkhard Kampfer

Effects of the in-medium modifications of nucleon form factors on neutrino interaction in dense matter are presented by considering both the weak and electromagnetic interactions of neutrinos with the constituents of the matter. A…

Nuclear Theory · Physics 2020-01-08 Parada T. P. Hutauruk , Yongseok Oh , K. Tsushima

We calculate the probability (``quenching weight'') that a hard parton radiates an additional energy fraction due to scattering in spatially extended QCD matter. This study is based on an exact treatment of finite in-medium path length, it…

High Energy Physics - Phenomenology · Physics 2009-11-10 Carlos A. Salgado , Urs Achim Wiedemann

A qqq BSE formalism based on an input 4-fermion Lagrangian of `current' u,d quarks, is employed for the construction of a relativistic qqq-wave function) via the BSE. Chiral invariance is ensured by the vector character of the gluonic…

High Energy Physics - Phenomenology · Physics 2007-05-23 A. Sharma , A. N. Mitra

We evaluate the in-medium $D$ and $\bar D$-meson masses in hot hadronic matter induced by interactions with the light hadron sector described in a chiral SU(3) model. The effective Lagrangian approach is generalized to SU(4) to include…

Nuclear Theory · Physics 2009-11-10 A. Mishra , E. L. Bratkovskaya , J. Schaffner-Bielich , S. Schramm , H. Stöcker

Soft gluon radiation induced by multiple scattering of a fast quark or gluon propagating through QCD matter is discussed. After revisiting the Landau-Pomeranchuk-Migdal effect in QED we show that large formation times of bremsstrahlung…

High Energy Physics - Phenomenology · Physics 2009-10-28 R. Baier , Yu. L. Dokshitzer , S. Peigné , D. Schiff

We study the medium-induced gluon emission process experienced by a hard jet parton propagating through the dense nuclear matter in the framework of deep inelastic scattering off a large nucleus. We work beyond the collinear rescattering…

High Energy Physics - Phenomenology · Physics 2019-10-09 Le Zhang , De-Fu Hou , Guang-You Qin

A recently proposed modified perturbative expansion for QCD incorporating gluon condensation is employed to evaluate the quark and gluon self-energy corrections in the first approximations. The results predict mass values of 1/3 of the…

High Energy Physics - Phenomenology · Physics 2009-10-31 Alejandro Cabo , Marcos Rigol

Based on a multiphase transport model, medium modifications of prompt photon-tagged jet fragmentation function are investigated by comparing prompt photon-tagged hadron azimuthal correlation in Au+Au collisions (0-40\%) with that in p+p…

Nuclear Theory · Physics 2014-06-25 Guo-Liang Ma

Multiple scattering, induced radiative energy loss and modified fragmentation functions of a heavy quark in nuclear matter are studied within the framework of generalized factorization in perturbative QCD. Modified heavy quark fragmentation…

High Energy Physics - Phenomenology · Physics 2014-11-18 Ben-Wei Zhang , Enke Wang , Xin-Nian Wang

We calculate the dissociation and recombination rates of $\Upsilon(1S)$ in quark-gluon plasma by using potential non-relativistic QCD. We then study the dynamical in-medium evolution of the $b\bar{b}-\Upsilon$ system in a periodic box via…

High Energy Physics - Phenomenology · Physics 2018-04-10 Xiaojun Yao , Berndt Müller