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Charged particle production is calculated in a hybrid framework consisting of the IP-Glasma initial state, MUSIC viscous relativistic fluid dynamics, and the UrQMD microscopic hadronic cascade. Using one set of parameters, we compute…

Nuclear Theory · Physics 2021-02-03 Bjoern Schenke , Chun Shen , Prithwish Tribedy

Possible scenarios based on available experimental data and phenomenological knowledge of the GeV energy region are extended to the TeV energy region in the framework of the weighted superposition mechanism of soft and semi-hard events. KNO…

High Energy Physics - Phenomenology · Physics 2011-03-23 Roberto Ugoccioni , Alberto Giovannini

Proton-proton collisions at new high energies ($\sqrt {s} =$ 2.36 and 7 TeV) at LHC resulted into greater mean multiplicities ($<n>$) of charged particles in the mid-rapidity region than estimated ones by different models and event…

High Energy Physics - Phenomenology · Physics 2012-02-21 Premomoy Ghosh

By relating the charge multiplicity distribution and the temperature of a de-exciting nucleus through a deep neural network, we propose that the charge multiplicity distribution can be used as a thermometer of heavy-ion collisions. Based on…

Nuclear Theory · Physics 2021-01-27 Y. D. Song , R. Wang , Y. G. Ma , X. G. Deng , H. L. Liu

We present results for the charged-particle multiplicity distribution at mid-rapidity in Au - Au collisions at sqrt(s_NN)=130 GeV measured with the PHENIX detector at RHIC. For the 5% most central collisions we find $dN_{ch}/d\eta_{|\eta=0}…

Nuclear Experiment · Physics 2008-11-26 PHENIX Collaboration , K. Adcox

A simple power-law growth of charged-particle multiplicities near midrapidity in central Au+Au collisions at $\sqrt{s_{NN}}=56$ and 130 GeV, recently measured at RHIC, is derived. We give predictions for the central particle densities up to…

High Energy Physics - Phenomenology · Physics 2011-03-23 Saul Barshay , Georg Kreyerhoff

We compute the proton-proton multiplicity distributions at LHC energies in the framework of a multiple scattering model assuming a Poisson distribution for each inelastic collision. Multiple scattering is essential to broaden the…

High Energy Physics - Phenomenology · Physics 2013-01-16 A. Capella , E. G. Ferreiro

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

Longitudinal particle production in heavy-ion collisions is influenced both by preferential emission from participating nucleons and by the breakup of spectator matter, yet quantifying these effects experimentally remains challenging. We…

Nuclear Theory · Physics 2026-03-06 Vipul Bairathi , Somadutta Bhatta

Event classifiers based either on the charged-particle multiplicity or on event topologies, such as spherocity and underlying event, became very useful tools to study collective-like behaviors in small collision systems. However,…

High Energy Physics - Experiment · Physics 2023-12-19 Gyula Bencédi

The moments and moment products of conserved charges are believed to be sensitive to critical fluctuations, which have been adopted in determining the QCD critical point. Using a dynamical multiphase transport model, we reproduce the…

Nuclear Theory · Physics 2021-07-21 Ling Huang , Guo-Liang Ma

I investigate the volume corrections on cumulants of total charge distributions and net proton distributions. The required volume information is generated by an optical Glauber model. I find that the corrected statistical expectations of…

Nuclear Theory · Physics 2016-11-15 Hao-jie Xu

A detailed study of pseudorapidity densities and multiplicity distributions of primary charged particles produced in proton-proton collisions, at $\sqrt{s} =$ 0.9, 2.36, 2.76, 7 and 8 TeV, in the pseudorapidity range $|\eta|<2$, was carried…

Nuclear Experiment · Physics 2017-04-04 ALICE Collaboration

Using the wounded nucleon, quark, and quark-diquark models, we extract the wounded source emission functions from the PHOBOS data for d+Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV. We apply these models to compute charged particle…

High Energy Physics - Phenomenology · Physics 2019-12-11 Michał Barej , Adam Bzdak , Paweł Gutowski

We report the observation of partonic radial collectivity in Au+Au collisions at $\sqrt{s_{\rm NN}} = 200$~GeV via the $p_{\rm T}$-differential flow observable $v_{0}(p_{\rm T})$ using the \texttt{AMPT} String Melting model. For inclusive…

Nuclear Experiment · Physics 2026-02-25 Rohit Agarwala , Dipankar Basak , Kalyan Dey

We discuss multiplicity fluctuations of charged particles produced in nuclear collisions measured event-by-event by the NA49 experiment at CERN SPS within the Glauber Monte Carlo approach. We use the concepts of wounded nucleons and wounded…

High Energy Physics - Phenomenology · Physics 2020-01-22 Maksym Deliyergiyev , Maciej Rybczynski

The charged-particle pseudorapidity density for Au+Au collisions at sqrt(s_NN)=62.4 GeV has been measured over a wide range of impact parameters and compared to results obtained at other energies. As a function of collision energy, the…

Nuclear Experiment · Physics 2008-11-26 B. B. Back , PHOBOS Collaboration

These proceedings describe the charged-particle pseudorapidity densities and multiplicity distributions measured by the ALICE detector in pp collisions at $\sqrt{s} = 0.9$ and 7 TeV in specific phase space regions. The pseudorapidity range…

High Energy Physics - Experiment · Physics 2019-08-14 Chiara Zampolli

It is suggested that the study of multiplicity difference correlators between two well-separated bins in high-energy heavy-ion collisions can be used as a means to detect evidence of a quark-hadron phase transition. Analytical expressions…

High Energy Physics - Phenomenology · Physics 2008-11-26 C. B. Yang , X. Cai