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Here we thoroughly discuss some weak points of the thermal model which is traditionally used to describe the hadron multiplicities measured in the central nucleus-nucleus collisions. In particularly, the role of conservation laws, the…

High Energy Physics - Phenomenology · Physics 2014-04-18 D. R. Oliinychenko , K. A. Bugaev , A. S. Sorin

One of the most remarkable results to emerge from heavy-ion collisions over the past two decades is the striking regularity shown by particle yields at all energies. This has led to several very successful proposals describing particle…

High Energy Physics - Phenomenology · Physics 2011-05-05 J. Cleymans , H. Oeschler , K. Redlich , S. Wheaton

Transverse-momentum ($p_{\rm T}$) differential yields of electrons from semileptonic heavy-flavour hadron decays have been measured in the most central (0-10%) and in semi-central (20-40%) Pb-Pb collisions at $\sqrt{s_{\rm NN}} = 2.76$ TeV.…

Nuclear Experiment · Physics 2019-01-18 ALICE Collaboration

The isoscaling properties of isotopically resolved projectile residues from peripheral collisions of 86Kr (25 MeV/nucleon), 64Ni (25 MeV/nucleon) and 136Xe (20 MeV/nucleon) beams on various target pairs are employed to probe the symmetry…

Nuclear Experiment · Physics 2009-11-11 G. A. Souliotis , D. V. Shetty , A. Keksis , E. Bell , M. Jandel , M. Veselsky , S. J. Yennello

For the first time, we apply the temperature dependent relativistic mean field (TRMF) model to study the ternary fission of heavy nucleus using level density approach. The probability of yields of a particular fragment is obtained by…

Nuclear Theory · Physics 2017-06-28 M. T. Senthil Kannan , Bharat Kumar , M. Balasubramaniam , B. K. Agrawal , S. K. Patra

Different scenarios for modeling resonances in a thermal model description of hadron yields measured in heavy-ion collisions are explored: the zero-width approximation, the energy independent Breit-Wigner scheme, and the energy dependent…

Nuclear Theory · Physics 2018-09-17 Volodymyr Vovchenko , Mark I. Gorenstein , Horst Stoecker

A method to determine the kinetic freeze-out temperature in heavy-ion collisions from measured yields of short-lived resonances is presented. The resonance production is treated in the framework of thermal model with an evolution between…

High Energy Physics - Phenomenology · Physics 2020-08-14 Anton Motornenko , Volodymyr Vovchenko , Carsten Greiner , Horst Stoecker

We study properties of Pb-Pb collisions at 2.76 TeV in mid-rapidity, $|y|<0.5$, based on data by the ALICE Collaboration. In particular, we examine the transverse momentum ($p_T$) spectra of positively charged (identified) hadrons, $\pi^+$,…

High Energy Physics - Phenomenology · Physics 2025-07-11 M. Waqas , Hassan Ali Khan , Wolfgang Bietenholz , Muhammad Ajaz , Jihane Ben Slimane , Haifa I. Alrebdi , A. Haj Ismail

Based on the assumption of the production of deconfined quark matter, we use a quark combination model to systematically investigate hadron yields in heavy ion collisions from RHIC $\sqrt{s_{NN}}=200, 130, 62.4$ GeV to SPS $E_{beam}=158,…

High Energy Physics - Phenomenology · Physics 2010-04-12 Rui-qin Wang , Feng-lan Shao , Jun Song , Qu-bing Xie

The ratio of symmetry energy coefficient to temperature $C_{sym}/T$ is extracted from different prescriptions using the isotopic as well as the isobaric yield distributions obtained in different projectile fragmentation reactions. It is…

Nuclear Theory · Physics 2015-06-12 Swagata Mallik , Gargi Chaudhuri

We investigate the thermoelectric effect for baryon rich plasma produced in heavy ion collision experiments. We estimate the associated Seebeck coefficient for the hadronic matter. Using kinetic theory within relaxation time approximation…

High Energy Physics - Phenomenology · Physics 2019-01-16 Jitesh R. Bhatt , Arpan Das , Hiranmaya Mishra

Isotopic effects observed in fragmentation reactions induced by protons, deuterons, and alpha particles of incident energies between 660 MeV and 15.3 GeV on 112-Sn and 124-Sn targets are discussed. The exponential scaling of the yield…

Nuclear Theory · Physics 2009-11-07 A. S. Botvina , O. V. Lozhkin , W. Trautmann

An detailed study of the thermodynamical state of nuclear matter in transport calculations of heavy--ion reactions is presented. In particular we determine temperatures from an analysis of the local momentum space distribution on one hand,…

Nuclear Theory · Physics 2007-05-23 T. Gaitanos , C. Fuchs , H. H. Wolter

We attempt to explain the ${\bar \Lambda}/\bar p$ ratios measured in heavy ion collisions at $11.6~{\rm A\cdot GeV}/c$ beam momentum within a hadronic framework. This ratio is enhanced relative to corresponding ratios in $pp$ collisions,…

Nuclear Theory · Physics 2007-05-23 G. J. Wang , G. Welke , R. Bellwied , C. Pruneau

The large top quark mass suggests that the top plays a pivotal role in Electroweak symmetry-breaking dynamics and, as a result, may have modified couplings to Electroweak bosons. Hadron colliders can provide measurements of these couplings…

High Energy Physics - Phenomenology · Physics 2008-11-26 Puneet Batra , Tim M. P. Tait

Particle yields in heavy ion collisions show an overwhelming evidence for chemical or relative chemical equilibrium at all beam energies. The rapidity dependence of the thermal parameters $T$ and $\mu_B$ can now be determined over a wide…

High Energy Physics - Phenomenology · Physics 2008-11-26 F. Becattini , J. Cleymans

The systematic study of fission fragment yields under different initial conditions provides a valuable experimental benchmark for fission models that aim to understand this complex decay channel and to predict reaction product yields.…

We present an estimate of the yield of hard probes expected for collisions of the isobars $^{96}_{44}$Ru and $^{96}_{40}$Zr at collision energies reachable at RHIC and the LHC\@. These yields are proportional to the number of binary…

Nuclear Theory · Physics 2023-07-25 Wilke van der Schee , Yen-Jie Lee , Govert Nijs , Yi Chen

The residue Coulomb interaction (RCI), which affects the results of symmetry energy of neutron-rich nucleus in isobaric yield ratio (IYR) methods, is difficult to be determined. Four RCI approximations are investigated: (1) the M1--RCI…

Nuclear Theory · Physics 2015-10-29 Chun-Wang Ma , Shan-Sha n Wang , Yan-Li Zhang , Hui-Ling Wei

Projectile like fragments emerging from heavy ion collision have an excitation energy which is often labeled by a temperature. This temperature was recently calculated using a geometric model. We expand the geometric model to include also…

Nuclear Theory · Physics 2015-06-17 S. Mallik , S. Das Gupta , G. Chaudhuri