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The multiplicity dependence of heavy flavour production in pp-collisions at LHC energies is studied in the framework of the multi-pomeron exchange model. The model is introducing the string-string interaction collectivity effects in pp…

Nuclear Theory · Physics 2018-02-06 Grigory Feofilov , Vladimir Kovalenko , Andrei Puchkov

We present a study of the transverse momentum spectra and their evolution in function of the position of the azimuthal of the particles associated to the leading particle. Additionally, the behavior of the spherocity distribution in the…

High Energy Physics - Phenomenology · Physics 2021-09-01 Aditya Nath Mishra , Gergely Gábor Barnaföldi , Guy Paić

Forward-backward multiplicity correlation strengths have been measured with the STAR detector for Au+Au and $\textit{p+p}$ collisions at $\sqrt{s_{NN}}$ = 200 GeV. Strong short and long range correlations (LRC) are seen in central Au+Au…

Nuclear Experiment · Physics 2009-10-29 The STAR Collaboration , B. I. Abelev

Event-by-event fluctuations of the charged particle multiplicity are studied for a wide range of centralities for Au$-$Au collisions at $\sqrt{s_{NN}}$ = 200 GeV, Pb$-$Pb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV and 5.02 TeV using the…

High Energy Physics - Phenomenology · Physics 2024-03-05 Pritindra Bhowmick , Sadhana Dash , Basanta Nandi , Claude Pruneau

The calculation of inclusive spectra of pions produced in $pp$ and $AA$ collisions as a function of rapidity $y$ is presented within the self-similarity approach. It is shown that at not large rapidities $y$ one can obtain the analytical…

High Energy Physics - Phenomenology · Physics 2020-05-20 A. I. Malakhov , G. I. Lykasov

We compute the centrality dependence of multiplicities of particles produced in ultrarelativistic nuclear collisions at various energies and atomic numbers. The computation is carried out in perturbative QCD with saturated densities of…

High Energy Physics - Phenomenology · Physics 2014-11-17 K. J. Eskola , K. Kajantie , K. Tuominen

The pp collisions have been studied for a long time, however, there are still some effects which are not completely understood, such as the long range angular correlations and the flow patterns in high multiplicity events, which were…

High Energy Physics - Phenomenology · Physics 2015-06-24 Eleazar Cuautle , Antonio Ortiz , Guy Paic

The transverse momentum spectra of different types of particles produced in central and peripheral gold-gold (Au-Au) and (inelastic) proton-proton ($pp$) collisions at the Relativistic Heavy Ion Collider (RHIC), as well as in central and…

High Energy Physics - Phenomenology · Physics 2020-11-10 Muhammad Waqas , Fu-Hu Liu , Li-Li Li , Haidar Mas'ud Alfanda

Multiplicity ($N_{\rm ch}$) distributions and transverse momentum ($p_{\rm T}$) spectra of inclusive primary charged particles in the kinematic range of $|\eta| < 0.8$ and 0.15 GeV/$c$ $< p_{T} <$ 10 GeV/$c$ are reported for pp, p-Pb, Xe-Xe…

Nuclear Experiment · Physics 2024-05-20 ALICE Collaboration

We study the evolution of the particle density, dn/d\eta at fixed \eta with the beam rapidity Y in the framework of string percolation model. Our main results are: (i) The width of the "plateau" increases proportionally to Y, (ii) limiting…

Nuclear Theory · Physics 2015-05-30 I. Bautista , C. Pajares , J. Dias de Deus

The properties of the strongly intensive variable characterizing correlations between the number of particles in two separated rapidity interval in pp interactions at LHC energies are studied in the framework of the string fusion model. We…

High Energy Physics - Phenomenology · Physics 2021-02-03 V. V. Vechernin , S. N. Belokurova

We present our analysis of the available experimental data on correlation between mean transverse momentum and charged particles multiplicity ($\langle p_T \rangle$-$N_{ch}$) at central rapidity in $pp$ and $p\bar{p}$ collisions at…

High Energy Physics - Phenomenology · Physics 2014-10-16 E. O. Bodnya , V. N. Kovalenko , A. M. Puchkov , G. A. Feofilov

Dynamic fluctuations in the local density of non-identified hadron tracks reconstructed in the STAR TPC are studied using the discrete wavelet transform power spectrum technique which involves mixed event reference sample comparison. The…

Nuclear Experiment · Physics 2012-08-27 STAR Collaboration

Single pion and prompt photon large transverse momentum spectra in p-p and Au-Au collisions are computed in perturbative QCD at RHIC energy, s^1/2 = 200 GeV. Next-to-leading order calculations are discussed and compared with p-p scattering…

High Energy Physics - Phenomenology · Physics 2009-11-11 Francois Arleo

Measurements of various particle species over an extended momentum range provide a sensitive experimental tool for investigating particle production mechanisms in hadronic collisions. Comparison of the spectral shapes from different…

Nuclear Experiment · Physics 2019-08-13 R. S. Hollis

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

A natural framework to understand the energy dependence of bulk observables from lower energy experiments to the LHC is provided by the Color Glass Condensate, which leads to a "geometrical scaling" in terms of an energy dependent…

High Energy Physics - Phenomenology · Physics 2011-08-25 T. Lappi

We develop velocity-dependent models describing the evolution of string networks that involve several types of interacting strings, each with a different tension. These incorporate the formation of Y-type junctions with links stretching…

Astrophysics · Physics 2014-11-18 A. Avgoustidis , E. P. S. Shellard

I will present the latest results on particle identified spectra and two particle correlations at high transverse momentum measured with the STAR detector at RHIC. I will compare those measurements with the projected capabilities for the…

Nuclear Experiment · Physics 2007-05-23 R. Bellwied

The first results from Au-Au collisions at $\sqrt{s_{NN}}$=130 GeV obtained with the PHENIX detector in the Year 2000 run at RHIC are presented. The mid-rapidity charged particle multiplicity and transverse energy per participating nucleon…

Nuclear Experiment · Physics 2019-08-14 A. Bazilevsky