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Generalization of z-scaling observed in the inclusive high-pT charged hadron and jet production is proposed. The scaling function psi(z) describing both charged hadrons and jets produced in proton-(anti)proton collisions for various…

High Energy Physics - Phenomenology · Physics 2011-03-23 I. Zborovsky , M. Tokarev

Characteristics of multi-particle production in proton-proton collisions at sqrt(s) = 7 TeV are studied as a function of the charged-particle multiplicity, N[ch]. The produced particles are separated into two classes: those belonging to…

High Energy Physics - Experiment · Physics 2013-12-17 CMS Collaboration

We study the structure of jets in proton-proton collisions at LHC energies using \textsc{Pythia} 8 Monte Carlo simulations. We demonstrate that the radial jet profiles exhibit scaling properties with charged-hadron event multiplicity over a…

High Energy Physics - Phenomenology · Physics 2021-07-13 Antal Gemes , Robert Vertesi , Gabor Papp , Gergely Gabor Barnafoldi

The underlying event activity in proton-proton collisions at forward pseudorapidity (-6.6 < eta < -5.2) is studied with the CMS detector at the LHC, using a novel observable: the ratio of the forward energy density, dE/d(eta), for events…

High Energy Physics - Experiment · Physics 2013-05-30 CMS Collaboration

Distributions sensitive to the underlying event are studied in events containing one or more charged-particle jets produced in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector at the Large Hadron Collider (LHC). These measurements…

High Energy Physics - Experiment · Physics 2013-06-25 ATLAS Collaboration

Jets are identified and their properties studied in center-of-mass energy sqrt(s) = 7 TeV proton-proton collisions at the Large Hadron Collider using charged particles measured by the ATLAS inner detector. Events are selected using a…

High Energy Physics - Experiment · Physics 2015-03-19 ATLAS Collaboration

In this study, a comprehensive analysis of jets and underlying events as a function of charged particle multiplicity in proton-proton (pp) collisions at a center-of-mass energy of $\sqrt{s} = 7$ TeV is presented. Various Monte Carlo (MC)…

High Energy Physics - Phenomenology · Physics 2024-08-09 Maryam Waqar , Haifa I. Alrebdi , Muhammad Waqas , K. S. Al-mugren , Muhammad Ajaz

Proton-Proton ($pp$) collisions at the Large Hadron Collider (LHC) are simulated in order to study events with a high local density of charged particles produced in narrow pseudorapidty windows of $\Delta\eta$ = 0.1, 0.2, and 0.5. The $pp$…

High Energy Physics - Experiment · Physics 2020-10-23 E. Shokr , A. H. El-Farrash , A. De Roeck , M. A. Mahmoud

Impact of the cone algorithm parameters Ecut, Eseed, R on the efficiency and characteristics of the reconstructed jets in p-p collisions at the energy sqrt s = 200 GeV is studied. The PYTHIA Monte Carlo generator is used for event…

High Energy Physics - Phenomenology · Physics 2007-08-21 T. G. Dedovich , M. V. Tokarev

The relationship between jet production in the central region and the underlying-event activity in a pseudorapidity-separated region is studied in 4.0 pb$^{-1}$ of $\sqrt{s} = 2.76$ TeV $pp$ collision data recorded with the ATLAS detector…

High Energy Physics - Experiment · Physics 2016-03-11 ATLAS Collaboration

Distributions sensitive to the underlying event in QCD jet events have been measured with the ATLAS detector at the LHC, based on 37/pb of proton-proton collision data collected at a centre-of-mass energy of 7 TeV. Charged-particle mean…

High Energy Physics - Experiment · Physics 2014-08-21 ATLAS Collaboration

Jets are collimated sprays of particles produced from the fragmentation and hadronization of hard-scattered partons in high energy hadronic and nuclear collisions. Jet properties are sensitive to details of parton showering processes and…

Nuclear Experiment · Physics 2023-07-31 Prottoy Das

The production of jets, and high momentum hadrons from jets, produced in deuteron ($d$)-$Au$ collisions at the relativistic heavy-ion collider (RHIC) and proton ($p$)-$Pb$ collisions at the large hadron collider (LHC) are studied as a…

Nuclear Theory · Physics 2018-05-16 Michael Kordell , Abhijit Majumder

We analyse the entropy properties in the proton-proton 1800 GeV events from the PYTHIA/JETSET Monte Carlo generator following a recent proposal concerning the measurement of entropy in multiparticle systems. The dependence on the number of…

High Energy Physics - Phenomenology · Physics 2014-11-17 K. Fialkowski , R. Wit

Improved jet energy scale corrections, based on a data sample corresponding to an integrated luminosity of 19.7 inverse-femtobarns collected by the CMS experiment in proton-proton collisions at a center-of-mass energy of 8 TeV, are…

High Energy Physics - Experiment · Physics 2017-02-28 CMS Collaboration

A machine learning technique is used to fit multiplicity distributions in high-energy proton-proton collisions and applied to make predictions for collisions at higher energies. The method is tested with Monte Carlo event generator events.…

High Energy Physics - Experiment · Physics 2021-08-16 E. Shokr , A. De Roeck , M. A. Mahmoud

Jet and dijet rates in pA collisions at LHC energies are computed using a NLO Monte Carlo code. Uncertainties due to the choice of scale, jet-finding algorithm, nucleon parton densities and nuclear modifications of nucleon parton densities…

High Energy Physics - Phenomenology · Physics 2007-05-23 A. Accardi , N. Armesto

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

The first measurement of the multiplicity dependence of intra-jet properties of leading charged-particle jets in proton-proton (pp) collisions is reported. The mean charged-particle multiplicity and jet fragmentation distributions are…

High Energy Physics - Experiment · Physics 2024-12-05 ALICE Collaboration

We demonstrate that a future high-energy electron-proton collider like THERA could largely extend the current HERA program in jet photoproduction of testing QCD and determining the partonic structure of the proton and the photon. Depending…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. Klasen
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