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At high temperatures or densities matter formed by strongly interacting elementary particles (hadronic matter) is expected to undergo a transition to a new form of matter - the quark gluon plasma - in which elementary particles (quarks and…

High Energy Physics - Lattice · Physics 2009-11-11 Frithjof Karsch

This talk serves as an introduction to the Heavy-Flavor session of the XXXIII International Symposium on Multiparticle Dynamics. A major focus of this session is on the production of heavy quarks. The talks which follow review the latest…

High Energy Physics - Experiment · Physics 2008-11-26 Jeffrey A. Appel

The physics content of the QGSJET-III Monte Carlo generator of high energy hadronic collisions is described. In particular, a phenomenological implementation of higher twist corrections to hard parton scattering processes is discussed in…

High Energy Physics - Phenomenology · Physics 2024-01-15 Sergey Ostapchenko

Superposition of jets of different flavors as well as superposition of jets of different topologies describe well observed structures (shoulder, H_q oscillations) in e+e- annihilation. The analysis of similar effects seen in experimental…

High Energy Physics - Phenomenology · Physics 2008-11-26 A. Giovannini , R. Ugoccioni

The hot and dense strongly interacting Quark-Gluon Plasma (sQGP) created in ultra-relativistic heavy-ion collisions can be probed by studying high-$p_{\rm T}$ particle production and parton energy loss. Similar measurements performed in…

Nuclear Experiment · Physics 2019-08-13 Gyula Bencedi

We present results of the updated SuperChic 3 Monte Carlo event generator for central exclusive production. This extends the previous treatment of proton-proton collisions to include heavy ion (pA and AA) beams, for both photon and…

High Energy Physics - Phenomenology · Physics 2019-03-12 L. A. Harland-Lang , V. A. Khoze , M. G. Ryskin

Gluon dominance model is proposed to study multiparticle production. This model describes multiplicyty distributions in $e^+e^-$, $p\bar p$ annihilation and $pp$ interactions.

High Energy Physics - Phenomenology · Physics 2007-05-23 E. S. Kokoulina

The problem of quarkonium production in heavy ion collisions presents a set of unique theoretical challenges -- from the relevant production mechanism of $J/\psi$ and $\Upsilon$ to the relative significance of distinct cold and hot nuclear…

High Energy Physics - Phenomenology · Physics 2020-01-23 Yiannis Makris , Ivan Vitev

We use a Monte Carlo approach to study hadron azimuthal angular correlations in high energy proton-proton and central nucleus-nucleus collisions at the BNL Relativistic Heavy Ion Collider (RHIC) energies at mid-rapidity. We build a hadron…

High Energy Physics - Phenomenology · Physics 2015-06-05 Alejandro Ayala , Isabel Dominguez , Jamal Jalilian-Marian , J. Magnin , Maria Elena Tejeda-Yeomans

The high-multiplicity pp collisions at the Large Hadron Collider energies with various heavy-ion-like signatures have warranted a deeper understanding of the underlying physics and particle production mechanisms. It is a common practice to…

High Energy Physics - Phenomenology · Physics 2020-10-08 Suman Deb , Sushanta Tripathy , Golam Sarwar , Raghunath Sahoo , Jan-e Alam

An overview of the experimental results on high-pt light hadron production and open charm production is presented. Data on particle production in elementary collisions are compared to next-to-leading order perturbative QCD calculations.…

Nuclear Experiment · Physics 2009-11-10 M. van Leeuwen

We present an extension to the colour reconnection model in the Monte-Carlo event generator Herwig to account for the production of baryons and compare it to a series of observables for soft physics. The new model is able to improve the…

High Energy Physics - Phenomenology · Physics 2018-03-05 Stefan Gieseke , Patrick Kirchgaeßer , Simon Plätzer

We study the regularities in the multiparticle production data obtained from different types of collisions indicating the universality of the hadroproduction process. The similarities of such bulk variables like the charged particle mean…

High Energy Physics - Phenomenology · Physics 2016-09-06 Edward K. G. Sarkisyan , Alexander S. Sakharov

Recent experimental studies of the multiplicity dependence of heavy quark (HQ) production in proton-proton collisions at 7 TeV showed a strong non-linear increase of the HQ multiplicity as a function of the charged particle multiplicity. We…

Nuclear Theory · Physics 2016-09-21 K. Werner , B. Guiot , Iu. Karpenko , T. Pierog , G. Sophys

The origin of the apparent thermalization in high-energy collisions is investigated using the data of the ATLAS and CMS Collaborations at the LHC. For this purpose, we analyze the transverse momentum distributions in the following…

High Energy Physics - Phenomenology · Physics 2018-09-19 O. K. Baker , D. E. Kharzeev

The Large Hadron Collider's high luminosity era presents major computational challenges in the analysis of collision events. Large amounts of Monte Carlo (MC) simulation will be required to constrain the statistical uncertainties of the…

The spectrum of partons in a QCD jet becomes independent of the primary energy in the low momentum limit. This follows within the perturbative QCD from the colour coherence in soft gluon branching. Remarkably, the hadrons follow such…

High Energy Physics - Phenomenology · Physics 2011-09-13 Valery A. Khoze , Sergio Lupia , Wolfgang Ochs

Lattice Quantum Chromodynamics (QCD) calculation predicts that a colour-deconfined QCD matter, Quark-Gluon Plasma (QGP), is formed at high temperature and energy density reached in ultra-relativistic heavy-ion collisions. Heavy quarks…

High Energy Physics - Experiment · Physics 2020-01-08 Daichi Kawana

An event generator for nuclear collisions is a microscopic model, obtained from extrapolating elementary interactions -- as electron-positron annihilation, deep inelastic scattering, and proton-proton interactions -- towards proton-nucleus…

High Energy Physics - Phenomenology · Physics 2009-11-07 K. Werner

The production cross section of heavy quarks in real and virtual photon-photon collisions has been studied. The unintegrated gluon density in the photon was obtained using the full CCFM evolution equation for the first time. The gluon…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. Hansson , H. Jung , L. Jonsson