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Monte-Carlo implementations of kT -factorization formula with both KLN and running-coupling BK unintegrated gluon distributions for nucleus-nucleus collisions are used to analyze recent experimental data on the particle multiplicities from…

Nuclear Theory · Physics 2015-05-28 Javier L. Albacete , Adrian Dumitru , Yasushi Nara

This note is a physics manual for a recent numerical implementation of k_t-factorization with running-coupling BK unintegrated gluon distributions. We also compile some results for Pb+Pb collisions at \sqrt{s} = 2.75 TeV, such as…

High Energy Physics - Phenomenology · Physics 2015-03-17 Javier L. Albacete , Adrian Dumitru

Moment analysis of global multiplicity distribution previously done for $e^{+}e^{-}$ and $hh$ processes is applied to $hA$ and $AA$ collisions. The oscillations of cumulants as functions of their rank are found in all the cases. Some…

High Energy Physics - Phenomenology · Physics 2007-05-23 A. Capella , I. M. Dremin , V. A. Nechitailo , J. Tran Thanh Van

We present predictions for the pseudo-rapidity density of charged particles produced in central Pb-Pb collisions at the LHC. Particle production in such collisions is calculated in the framework of k_t-factorization. The nuclear…

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

Long range rapidity correlations in A+A collisions are sensitive to strong color field dynamics at early times after the collision. These can be computed in a factorization formalism \cite{GelisLV5} which expresses the $n$-gluon inclusive…

High Energy Physics - Phenomenology · Physics 2014-11-20 K. Dusling , F. Gelis , T. Lappi , R. Venugopalan

Predictions for the pseudorapidity density of charged particles produced in Pb-Pb central collisions at $\sqrt{s_{NN}}=5.5$ TeV are presented. Particle production in such collisions is computed in the framework of k_t-factorization, using…

High Energy Physics - Phenomenology · Physics 2007-07-18 Javier L. Albacete

We extend the numerical analysis of the energy and centrality dependence of particle multiplicities at midrapidity in high-energy p+A and A+A collisions from a running coupling $k_T$-factorization formula made in~\cite{Dumitru:2018gjm} by…

High Energy Physics - Phenomenology · Physics 2018-11-20 Adrian Dumitru , Andre V. Giannini , Matthew Luzum , Yasushi Nara

The inclusive distributions of gluons and pions are calculated with absolute normalization for high-energy nucleon-nucleon collisions. The results for several unintegrated gluon distributions from the literature are compared. The gluon…

High Energy Physics - Phenomenology · Physics 2007-05-23 Antoni Szczurek

We analyze the inclusive spectra of hadrons produced in $pp$ collisions at high energies in the mid-rapidity region within the soft QCD and perturbative QCD assuming the possible creation of the soft gluons at low intrinsic transverse…

High Energy Physics - Phenomenology · Physics 2015-05-30 G. I. Lykasov , V. A. Bednyakov , A. A. Grinyuk , M. Poghosyan , A. G. Dolbilov

We study the influence of the meson cloud of the nucleon on predictions of the Monte Carlo Glauber model for the charged particle multiplicity density at mid-rapidity in $AA$ collisions. We find that for central $AA$ collisions the meson…

Nuclear Theory · Physics 2016-07-20 B. G. Zakharov

In order to describe forward hadron productions in high-energy nuclear collisions, we propose a Monte-Carlo implementation of Dumitru-Hayashigaki-Jalilian-Marian formula with the unintegrated gluon distribution obtained numerically from the…

High Energy Physics - Phenomenology · Physics 2015-05-28 H. Fujii , K. Itakura , Y. Kitadono , Y. Nara

It has been demonstrated that factorial moments analysis in dependence from the size of phase-space cells (when the latter is decreased but is still considerably large), exhibits sensitivity to particle bunching within a system situated in…

Nuclear Theory · Physics 2024-08-28 Valeria Zelina Reyna Ortiz , Maciej Rybczynski , Zbigniew Wlodarczyk

We present various order moments (Variance ($\sigma^2$), Skewness($S$), Kurtosis($\kappa$)) of net-proton multiplicity distributions in Au+Au collisions from the first phase of RHIC beam energy scan ({\sNN}=7.7$-$200 GeV). The measurements…

Nuclear Experiment · Physics 2019-08-13 Xiaofeng Luo

The forthcoming LHC measurement of hadron multiplicity in proton-nucleus collisions is a crucial test of the k_t factorization and gluon saturation based models. Here, we provide quantitative predictions for the pseudorapidity distribution…

High Energy Physics - Phenomenology · Physics 2012-01-26 Amir H. Rezaeian

Studying fluctuations of conserved quantities, such as baryon number, strangeness, and charge, provides insights into the properties of matter created in high-energy nuclear collisions. Lattice QCD calculations suggest that higher moments…

Nuclear Experiment · Physics 2016-11-23 Jochen Thäder

Fluctuations of conserved quantities such as baryon number (B), electric charge number (Q), and strangeness number (S), are sensitive to the correlation length and can be used to probe non-gaussian fluctuations near the critical point.…

High Energy Physics - Experiment · Physics 2017-03-08 Ji Xu

The upcoming p+Pb run at the LHC will probe the nuclear gluon distribution at very small Bjorken x (from $x \sim 10^{-4}$ at mid-rapidity down to $x \sim 10^{-6}$ in the proton fragmentation region) and will allow to test approaches based…

High Energy Physics - Phenomenology · Physics 2012-10-23 Adrian Dumitru , Dmitri E. Kharzeev , Eugene M. Levin , Yasushi Nara

An improved leading order fragmentation functions set of kaon is proposed based on the experimental data. We compare it with currently available sets, and use it to calculate high-$p_T$ $K/\pi$ ratios in relativistic proton-proton…

High Energy Physics - Phenomenology · Physics 2007-05-23 Yi Zhang

Recently, Liou, Mueller and Munier have argued that proton-nucleus collisions at the LHC may give access to the full statistics of the event-by-event fluctuations of the gluon density in the proton. Indeed, the number of particles produced…

High Energy Physics - Phenomenology · Physics 2017-09-19 Laura Dominé , Cédric Lorcé , Stéphane Munier , Simon Pekar

Due to gluon saturation, the growth of the inelastic nucleon-nucleon cross section with increasing collision energy sqrt(s) results in a broadening of the nucleon's density distribution in position space. This leads to a natural smoothing…

Nuclear Theory · Physics 2012-10-08 Ulrich W. Heinz , J. Scott Moreland
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