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In this note a study of hadronic event shapes in QCD events at the Large Hadron Collider (LHC) is presented. Calorimetric jet momenta, determined by various jet clustering algorithms, are used as input for calculating various event-shape…

High Energy Physics - Phenomenology · Physics 2008-10-20 G. Dissertori , F. Moortgat , M. A. Weber

The charged particle multiplicity distribution in high energy hadronic and nuclear collisions receive contribution from both diffractive and non diffractive processes. It is experimentally challenging to segregate diffractive events from…

High Energy Physics - Phenomenology · Physics 2022-06-08 Sadhana Dash , Nirbhay Behera , Basanta Nandi

The thermodynamic properties of matter created in high-energy heavy-ion collisions have been studied in the framework of the non-extensive Tsallis statistics. The transverse momentum ($p_{\rm T}$)~spectra of identified charged particles…

High Energy Physics - Phenomenology · Physics 2021-10-06 Rajendra Nath Patra , Bedangadas Mohanty , Tapan K. Nayak

Particle production at LHC energies involves the interplay of hard (perturbative) and soft (non-perturbative) QCD processes. Global observables, such as the charged-particle multiplicity, are related to the initial geometry and the energy…

High Energy Physics - Experiment · Physics 2019-02-20 Beomkyu Kim

The event-by-event fluctuations in heavy ion collisions carry information about the thermodynamic properties of the hadronic system at the time of freeze-out. By studying these fluctuations as a function of varying control parameters, such…

High Energy Physics - Phenomenology · Physics 2007-05-23 Krishna Rajagopal

The heavy-ion collisions (A--A) at the Large Hadron Collider (LHC) energies have confirmed the production of the quark-gluon plasma (QGP), a new state of nuclear matter where quarks and gluons are deconfined. The light-flavour hadrons…

Nuclear Experiment · Physics 2023-11-06 Rajendra Nath Patra

Comparisons of higher-order predictions within the Standard Model of Particle Physics (SM) to data are central to high-energy collider experiments like the Large Hadron Collider (LHC). Processes with multiple kinematic scales, such as…

High Energy Physics - Phenomenology · Physics 2024-05-03 Rene Poncelet

Transverse spherocity is an event shape observable, which separates the events based on their geometrical shapes. In this work, we use transverse spherocity to study the identified light flavor production in heavy-ion collisions using A…

High Energy Physics - Phenomenology · Physics 2022-06-16 Neelkamal Mallick , Sushanta Tripathy , Raghunath Sahoo

The started LHC heavy ion program makes it possible to probe new frontiers of the high temperature Quantum Chromodynamics. It is expected that the role of hard and semi-hard particle production processes may be significant at ultra-high…

High Energy Physics - Phenomenology · Physics 2012-09-20 I. P. Lokhtin , A. V. Belyaev , L. V. Malinina , S. V. Petrushanko , E. P. Rogochaya , A. M. Snigirev

Hydrodynamics merged with single-freeze-out statistical hadronization is used to describe the midrapidity hadron production in relativistic heavy-ion collisions at the highest RHIC energies and to make predictions for the LHC. Thermodynamic…

Nuclear Theory · Physics 2008-11-26 Mikolaj Chojnacki , Wojciech Florkowski , Wojciech Broniowski , Adam Kisiel

The energy deposited at very forward rapidities (very forward energy) is a powerful tool for characterising proton fragmentation in pp and p$-$Pb collisions. The correlation of very forward energy with particle production at midrapidity…

Nuclear Experiment · Physics 2022-12-06 ALICE Collaboration

In this contribution, the production rates and the transverse momentum distributions of strange hadrons are reported as a function of charged particle multiplicity. In this analysis, the data collected in proton-proton collisions at…

Nuclear Experiment · Physics 2020-04-07 Prabhakar Palni

The particle yields and particle number ratios in Pb+Pb collisions at the LHC energy $\sqrt{s_{NN}}=2.76$ TeV are described within the integrated hydrokinetic model (iHKM) at the two different equations of state (EoS) for the quark-gluon…

High Energy Physics - Phenomenology · Physics 2018-07-03 Yu. M. Sinyukov , V. M. Shapoval

The aim of ultrarelativistic heavy ion physics is to study collectivity and thermodynamics of Quantum Chromodynamics (QCD) by creating a transient small volume of matter with extreme density and temperature. There is experimental evidence…

High Energy Physics - Phenomenology · Physics 2010-12-02 Thorsten Renk

The study of heavy-flavored baryon and meson production in proton-proton (pp) collisions provides crucial insight into the hadronization mechanisms of Quantum Chromodynamics (QCD). In this work an attempt has been made to describe the…

High Energy Physics - Phenomenology · Physics 2025-10-13 Tonmoy Sharma , Banajit Barman , Buddhadeb Bhattacharjee

In this paper we study the particle production at high transverse momentum ($p_{\rm T}>8$ GeV/$c$) in both pp and Pb-Pb collisions at LHC energies. The characterization of the spectra is done using a power-law function and the resulting…

High Energy Physics - Phenomenology · Physics 2019-03-29 Aditya Nath Mishra , Antonio Ortiz , Guy Paic

Recent multiplicity-dependent analyses of pp and p--Pb collision data have revealed that particle production shares similar features with that in heavy-ion collisions. Studies using resonances could help to understand the possible onset of…

Nuclear Experiment · Physics 2023-03-22 A. Rosano

We present measurements of strange and multi-strange hadrons in p+p collisions at $\sqrt{s}$= 200 GeV measured by STAR. We will compare these preliminary results to leading-order (LO) and next-to-leading order (NLO) perturbative QCD models…

Nuclear Experiment · Physics 2009-11-11 Mark Heinz

Recently, the CMS Collaboration has published identified particle transverse momentum spectra in high multiplicity events at LHC energies $\sqrt s $ = 0.9-13 TeV. In the present work the transverse momentum spectra have been analyzed in the…

High Energy Physics - Phenomenology · Physics 2020-01-01 A. S. Hirsch , C. Pajares , R. P. Scharenberg , B. K. Srivastava

We review results on hadron multiplicities in high energy particle collisions. Both theory and experiment are discussed. The general procedures used to describe particle multiplicity in Quantum Chromodynamics (QCD) are summarized. The QCD…

High Energy Physics - Phenomenology · Physics 2009-10-31 I. M. Dremin , J. W. Gary