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The experimental emission probabilities of complex fragments by low energy compound nuclei and their dependence upon energy and atomic number are compared to the transition state rates. Intermediate-mass-fragment multiplicity distributions…

Nuclear Experiment · Physics 2007-05-23 L. G. Moretto , R. Ghetti , K. X. Jing , L. Phair , K. Tso , G. J. Wozniak

The inclusion of running coupling effects in the BK-JIMWLK evolution equations considerably reduces the energy dependence of the saturation scale with respect to previous estimates based on fits to HERA data. We discuss how such slowdown…

High Energy Physics - Phenomenology · Physics 2008-11-26 Javier L. Albacete

Charged hadrons in 0.15 < pt < 4 GeV/c associated with particles of pt^trig > 4 GeV/c are reconstructed in pp and Au+Au collisions at sqrt(s_NN)=200 GeV. The associated multiplicity and pt magnitude sum are found to increase from pp to…

Nuclear Experiment · Physics 2012-08-27 STAR Collaboration

KNO scaling, i.e. the collapse of multiplicity distributions P_n onto a universal scaling curve manifests when P_n is expressed as the distribution of the standardized multiplicity (n-c)/lambda with c and lambda being location and scale…

High Energy Physics - Phenomenology · Physics 2009-10-31 Sandor Hegyi

We model the (holographic) QCD Pomeron as a long and stretched (fixed impact parameter) transverse quantum string in flat $D_\perp=3$ dimensions. After discretizing the string in $N$ string bits, we analyze its length, mass and spatial…

High Energy Physics - Phenomenology · Physics 2021-02-12 Yachao Qian , Ismail Zahed

The multiplicity distribution of particles in relativistic gases is studied in terms of Tsallis' nonextensive statistics. For an entropic index q>1 the multiplicity distribution is wider than the Poisson distribution with the same average…

Statistical Mechanics · Physics 2007-05-23 C. E. Aguiar , T. Kodama

In this note, using the colour string model, we study the configuration space distribution of stopped nucleons in heavy-ion collisions. We find that the stopped nucleons from the target and the projectile end up separated from each other by…

High Energy Physics - Phenomenology · Physics 2018-02-27 Andrzej Bialas , Adam Bzdak , Volker Koch

We extend the scaling behaviour observed in the inclusive charged hadron transverse momentum ($p_{T}$) distributions to the $p_{T}$ spectra of pions, kaons and protons produced in proton-proton ($pp$) collisions with center of mass energies…

High Energy Physics - Phenomenology · Physics 2015-12-10 W. C. Zhang

It is shown that different ways of interacting strings formed in high energy nucleus-nucleus collisions cause a different strength of the chaoticity parameter lambda of Bose-Einstein correlations. In particular, in the case of percolation…

High Energy Physics - Phenomenology · Physics 2009-10-31 M. A. Braun , F. del Moral , C. Pajares

We show within a geometrical model developed in earlier papers that multiplicity distributions are cut off at large multiplicities. The position and motion of the cut-off point is related to geometrical- and KNO scaling and their violation,…

High Energy Physics - Phenomenology · Physics 2007-05-23 L. L. Jenkovszky , B. V. Struminsky

The first measurement of the charged-particle multiplicity density at mid-rapidity in Pb-Pb collisions at a centre-of-mass energy per nucleon pair $\sqrt{s_{\rm NN}}$ = 2.76 TeV is presented. For an event sample corresponding to the most…

Nuclear Experiment · Physics 2017-10-02 ALICE Collaboration

Multiplicities of charged secondary hadrons in the relativistic nucleus-nucleus collisions in a wide energy range are analysed on the basis of partial stimul- ting emission and cluster cascading models. The experimental data are obtained by…

High Energy Physics - Phenomenology · Physics 2008-02-03 S. M. Esakia , V. R. Garsevanishvili , T. R. Jalagania , G. O. Kuratashvili , Yu. V. Tevzadze

The STAR Collaboration presents new measurements of inclusive charged hadron distributions for $p_{T} <$ 12 GeV/c from Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV. Charged hadron suppression at high $p_{T}$ is similar in shape and…

Nuclear Experiment · Physics 2014-11-18 Jennifer L. Klay

The evolution of the symmetry energy coefficient of the binding energy of hot fragments with increasing excitation is explored in multifragmentation processes following heavy-ion collisions below the Fermi energy. In this work,…

Nuclear Experiment · Physics 2008-11-26 G. A. Souliotis , A. S. Botvina , D. V. Shetty , A. L. Keksis , M. Jandel , M. Veselsky , S. J. Yennello

The status of experiments on determination of level density and partial widths of the nuclear reaction products emission in diapason of nucleon binding energy is presented. There are analyzed the sources and magnitude of probable…

Nuclear Experiment · Physics 2011-05-25 A. M. Sukhovoj , V. A. Khitrov

The transverse momentum spectra of charged particles have been measured in pp and PbPb collisions at sqrt(sNN) = 2.76 TeV by the CMS experiment at the LHC. In the transverse momentum range pt = 5-10 GeV/c, the charged particle yield in the…

Nuclear Experiment · Physics 2012-08-27 CMS Collaboration

The high energy proton-neutron charge exchange scattering reaction is studied in an effective hadron model for the energy range of s from 45.9 to 414.61 GeV*GeV. The main features of the observed differential cross section, the forward peak…

High Energy Physics - Phenomenology · Physics 2007-05-23 Y. Yan , R. Tegen , T. Gutsche , V. E. Lyubovitskij , Amand Faessler

This paper presents the measurements of $\pi^{\pm}$, $\rm{K}^{\pm}$, $\rm{p}$ and $\bar{\rm{p}}$ transverse momentum ($p_{\rm{T}}$) spectra as a function of charged-particle multiplicity density in proton-proton (pp) collisions at…

Nuclear Experiment · Physics 2021-03-15 ALICE Collaboration

The dependence of the multiplicity and the transverse momentum distribution on the number of collisions are studied for central and peripheral Au-Au collisions at SPS, RHIC and LHC energies in the framework of percolation of strings. A…

High Energy Physics - Phenomenology · Physics 2009-11-07 M. A. Braun , F. del Moral , C. Pajares

Using a unified analytic representation for the elastic scattering amplitudes of pp scattering valid for all energy region, the behavior of observables in the LHC collisions in the range $\sqrt{s}$= 2.76 - 14 TeV is discussed. Similarly to…

High Energy Physics - Phenomenology · Physics 2014-10-22 Anderson Kendi Kohara , Erasmo Ferreira , Takeshi Kodama