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In high energy collisions involving small nuclei (p+p or x+Au collisions where x=p, d, or $^3$He) the fluctuating size, shape and internal gluonic structure of the nucleon is shown to have a strong effect on the initial size and shape of…

Nuclear Theory · Physics 2016-09-21 Kevin Welsh , Jordan Singer , Ulrich W. Heinz

Anisotropic flows ($v_2$ and $v_4$) of light nuclear clusters are studied by Isospin-Dependent Quantum Molecular Dynamics model for the system of $^{86}$Kr + $^{124}$Sn at intermediate energy and large impact parameters. Number-of-nucleon…

Nuclear Theory · Physics 2008-11-26 T. Z. Yan , Y. G. Ma , X. Z. Cai , J. G. Chen , D. Q. Fang , W. Guo , C. W. Ma , E. J. Ma , W. Q. Shen , W. D. Tian , K. Wang

The initial geometry effect on collective flows, which are inherited from initial projectile structure, is studied in relativistic heavy-ion collisions of $^{12}$C + Au by using a multi-phase transport model (AMPT). Elliptic flow ($v_2$)…

Nuclear Theory · Physics 2017-06-21 S. Zhang , Y. G. Ma , J. H. Chen , W. B. He , C. Zhong

We compute bottomonium suppression and elliptic flow within the pNRQCD effective field theory using an open quantum systems approach. For the hydrodynamical background, we use 2+1D MUSIC second-order viscous hydrodynamics with IP-Glasma…

High Energy Physics - Phenomenology · Physics 2023-03-21 Huda Alalawi , Jacob Boyd , Chun Shen , Michael Strickland

The elliptical flow of fragments is studied for different systems at incident energies between 50 and 1000 MeV/nucleon using the isospin-dependent quantum molecular dynamics (IQMD) model. Our findings reveal that elliptical flow shows a…

Nuclear Theory · Physics 2010-11-02 Sanjeev Kumar , Suneel Kumar , Rajeev K. Puri

The hydrodynamic flow-like behavior of charged hadrons in high-energy lead-lead collisions is studied through multiparticle correlations. The elliptic anisotropy values based on different orders of multiparticle cumulants, $v_{2}\{2k\}$,…

Nuclear Experiment · Physics 2024-02-20 CMS Collaboration

The detailed analysis of excitation function of elliptical flow by taking into account the nature of equation of state, nucleon-nucleon cross sections as well as momentum dependent interactions is performed within Quantum Molecular Dynamics…

Nuclear Theory · Physics 2011-12-30 Sanjeev Kumar , Rajeev Chugh

Neutrino oscillation experiments use heavy nuclear targets to achieve sufficient interaction rates. Nuclear effects are introduced in the experimental environment by the use of these targets and need to be quantified as they add to the…

Nuclear Theory · Physics 2020-09-18 Jaydip Singh , Srishti Nagu , Jyotsna Singh , R. B. Singh

We study the quasi--elastic contribution to the inclusive $(\nu_l,\nu_l N)$, $(\nu_l,l^- N)$, $({\bar \nu}_l,{\bar \nu}_l N)$ and $({\bar \nu}_l,l^+ N)$ reactions in nuclei using a Monte Carlo simulation method to account for the…

High Energy Physics - Phenomenology · Physics 2008-11-26 J. Nieves , M. Valverde , M. J. Vicente Vacas

The influence of multiplicity distribution (fluctuation of multiplicity in the event space) on the erraticity behaviour in high energy collisions is investigated via Monte Carlo simulation and compared with the experimental results from…

High Energy Physics - Phenomenology · Physics 2007-05-23 Liu zhixiu , Fu Jinghua , Liu Lianshou

The decorrelation of the orientation of the event-plane angles in the initial state of relativistic Pb-Pb and p-Pb collisions, the "torque effect," is studied in a model of entropy deposition in the longitudinal direction involving…

Nuclear Theory · Physics 2016-01-20 Piotr Bozek , Wojciech Broniowski

Recent theories of nucleation that go beyond Classical Nucleation Theory predict that diffusion-limited nucleation of both liquid droplets and of crystals from a low-density vapor (or weak solution) begins with long-wavelength density…

Statistical Mechanics · Physics 2020-05-27 James F. Lutsko , Julien Lam

We argue that RHIC data, in particular those on the anisotropic flow coefficients v_2 and v_4, suggest that the matter produced in the early stages of nucleus-nucleus collisions is incompletely thermalized. We interpret the parameter…

Nuclear Theory · Physics 2010-04-06 R. S. Bhalerao , J. -P. Blaizot , N. Borghini , J. -Y. Ollitrault

We show that fluctuating proton positions in the colliding nuclei generate, on the event-by-event basis, very strong magnetic and electric fields in the direction both parallel and perpendicular to the reaction plane. The magnitude of E and…

High Energy Physics - Phenomenology · Physics 2015-06-03 Adam Bzdak , Vladimir Skokov

A key ingredient of hydrodynamical modeling of relativistic heavy ion collisions is thermal initial conditions, an input that is the consequence of a pre-thermal dynamics which is not completely understood yet. In the paper we employ a…

Nuclear Theory · Physics 2015-01-22 V. Yu. Naboka , S. V. Akkelin , Iu. A. Karpenko , Yu. M. Sinyukov

A promising astrophysical site to produce the lighter heavy elements of the first $r$-process peak ($Z = 38-47$) is the moderately neutron rich ($0.4 < Y_e < 0.5$) neutrino-driven ejecta of explosive environments, such as core-collapse…

High Energy Astrophysical Phenomena · Physics 2022-08-17 A. Psaltis , A. Arcones , F. Montes , P. Mohr , C. J. Hansen , M. Jacobi , H. Schatz

A recent updated version of the Lanzhou quantum molecular dynamics is reviewed, in which the momentum dependence of symmetry potential and the effective mass splitting of proton and neutron in nuclear medium are included in the model. The…

Nuclear Theory · Physics 2012-02-13 Zhao-Qing Feng

The effects of bulk viscosity on the elliptic flow $v_{2}$ are studied using realistic equation of state and realistic transport coefficients. We find that thebulk viscosity acts in a non trivial manner on $v_{2}$. At low $p_{T}$, the…

High Energy Physics - Phenomenology · Physics 2009-11-18 G. S. Denicol , T. Kodama , T. Koide , Ph. Mota

We examine the dependence of event rates at neutrino telescopes on the neutrino-nucleon cross section for neutrinos with energy above 1 PeV, and contrast the results with those for cosmic ray experiments. Simple scaling of the Standard…

High Energy Physics - Phenomenology · Physics 2007-05-23 S. Hussain , D. Marfatia , D. W. McKay , D. Seckel

A theoretical approach was developed to describe secondary particle emission in heavy ion collisions, with special regards to pre-equilibrium {\alpha}-particle production. Griffin's model of non-equilibrium processes is used to account for…