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The measured charged particle multiplicity distribution in the forward rapidity region of the p$-$p collisions at $\sqrt{s}$ = 0.9 TeV, 7 TeV and 8 TeV at the LHC have been described using the Weibull distribution function. The higher order…

High Energy Physics - Phenomenology · Physics 2019-09-04 Ranjit Nayak , Sadhana Dash

With large volumes of data available at LHC, it has possible to study the multiplicity distributions. It is interesting as well to check how well event generators can describes the properties and the behavior of multi-particle production…

High Energy Physics - Phenomenology · Physics 2024-02-28 Valeria Zelina Reyna Ortiz , Maciej Rybczynski , Zbigniew Wlodarczyk

The multiplicity measurements include the pseudorapidity density, $\rm{d}N_{\rm ch}/\rm{d}{\eta}$, and the probability distribution as a function of the number of charged particles, $\rm{P}(N_{\rm ch})$. ALICE has measured the…

Nuclear Experiment · Physics 2018-11-14 Valentina Zaccolo

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

Measurements of the sphericity of primary charged particles in minimum bias proton--proton collisions at $\sqrt{s}=0.9$, 2.76 and 7 TeV with the ALICE detector at the LHC are presented. The observable is linearized to be collinear safe and…

High Energy Physics - Experiment · Physics 2017-04-18 ALICE Collaboration

A three-parameter discrete distribution is developed to describe the multiplicity distributions observed in total- and limited phase space volumes in different collision processes. The probability law is obtained by the Poisson transform of…

High Energy Physics - Phenomenology · Physics 2009-10-28 S. Hegyi

Global observables such as the pseudorapidity distributions of particle multiplicities in the final state are crucial to shed light into the physics processes involved in hadronic collisions. In proton$-$lead (p$-$Pb) collisions at Large…

Nuclear Experiment · Physics 2023-12-15 Abhi Modak

The energy dependence of charged-hadron production in proton-proton collisions at RHIC and LHC energies is investigated in a nonequilibrium-statistical relativistic diffusion model (RDM) with three sources for particle production.…

High Energy Physics - Phenomenology · Physics 2015-05-28 Georg Wolschin

We present multiplicity and pseudorapidity distributions of inclusive photons at forward rapidity in proton-lead (p-Pb) collisions at $\sqrt{s\rm_{NN}}$ = 5.02 TeV using the data obtained from Photon Multiplicity Detector (PMD) of ALICE.…

High Energy Physics - Experiment · Physics 2022-09-21 Abhi Modak

We study proton-lead collisions with a new model for the Fock states of the incoming proton. The number of collisions which the proton experiences selects the appropriate Fock state of the proton which generates a multiple of pp-like…

High Energy Physics - Phenomenology · Physics 2018-05-09 H. J. Pirner , B. Kopeliovich

Effects of strong longitudinal color fields (SCF) on the identified (anti)particle transverse momentum ($p_T$) distributions in $ pp$ collision at $\sqrt{s}$ = 7 TeV are investigated within the framework of the {\small HIJING/B\=B v2.0}…

High Energy Physics - Phenomenology · Physics 2018-12-19 V. Topor Pop , M. Petrovici

On 23rd November 2009, during the early commissioning of the CERN Large Hadron Collider (LHC), two counter-rotating proton bunches were circulated for the first time concurrently in the machine, at the LHC injection energy of 450 GeV per…

High Energy Physics - Experiment · Physics 2017-10-02 ALICE Collaboration

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

In this paper, we report the production cross-section of forward photons in the pseudorapidity regions of $\eta\,>\,10.94$ and $8.99\,>\,\eta\,>\,8.81$, measured by the LHCf experiment with proton--proton collisions at $\sqrt{s}$ = 13 TeV.…

Experimental findings of CMS on properties of jets and underlying events at high multiplicities in proton-proton interactions at 7 TeV are interpreted as an indication of increasing role of central collisions with small impact parameters.…

High Energy Physics - Phenomenology · Physics 2015-06-18 M. Yu. Azarkin , I. M. Dremin , M. Strikman

By taking into account the effects of leading particles, we discuss the pseudorapidity distributions of the charged particles produced in high energy heavy ion collisions in the context of evolution-dominated hydrodynamic model. The leading…

Nuclear Theory · Physics 2014-01-07 Z. J. Jiang , H. L. Zhang , J. Wang , K. Ma

The centrality dependence of the mean charged-particle multiplicity as a function of pseudorapidity is measured in approximately 1 $\mu$b$^{-1}$ of proton--lead collisions at a nucleon--nucleon centre-of-mass energy of…

High Energy Physics - Experiment · Physics 2016-05-04 ATLAS Collaboration

The charged-particle multiplicity distribution and its moments have been measured, for all hadronic as well as for light-quark and b-quark events in e+e- collisions at the Z mass. The Hq moments derived from the charged-particle…

High Energy Physics - Experiment · Physics 2007-05-23 D. J. Mangeol

In these proceedings, the measurements of the long-range near-side yields of charged hadrons in low-multiplicity proton--proton collisions at \thirteen are presented. The investigation studies pairs of charged particles within $1.4 <…

Nuclear Experiment · Physics 2023-06-09 J. E. Parkkila

In this Letter, comprehensive results on ${\rm\pi}^\pm$, K$^\pm$, K$^0_S$, p, $\rm\bar{p}$, $\rm \Lambda$ and $\rm \bar{\Lambda}$ production at mid-rapidity ($0 < y_{\rm cms} < 0.5$) in p-Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV,…

Nuclear Experiment · Physics 2014-09-16 ALICE Collaboration
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