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A perturbative QCD based jet tomographic Monte Carlo model, CUJET2.0, is presented to predict jet quenching observables in relativistic heavy ion collisions at RHIC/BNL and LHC/CERN energies. This model generalizes the DGLV theory of flavor…

High Energy Physics - Phenomenology · Physics 2015-08-11 Jiechen Xu , Alessandro Buzzatti , Miklos Gyulassy

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

We evaluate the kinematic distributions in phase space of 4-parton final-state subprocesses produced by double parton scattering, and we contrast these with the final-state distributions that originate from conventional single parton…

High Energy Physics - Phenomenology · Physics 2010-05-28 Edmond L. Berger , C. B. Jackson , Gabe Shaughnessy

In ultra-peripheral heavy-ion collisions the nuclei pass with such a large impact parameter that no strong interaction can take place. However, a photon emitted by one nucleus can still interact either with the other nucleus or with a…

High Energy Physics - Phenomenology · Physics 2018-06-20 Ilkka Helenius

An up-to-date global QCD analysis of high energy lepton-hadron and hadron-hadron interactions is performed to better determine the gluon and quark parton distributions in the nucleon. Improved experimental data on inclusive jet production,…

High Energy Physics - Phenomenology · Physics 2008-11-26 H. L. Lai , J. Huston , S. Kuhlmann , J. Morfin , F. Olness , J. F. Owens , J. Pumplin , W. K. Tung

I present a brief review of the existing models for particle multiplicity evaluation in heavy ion collisions which are at our disposal in the form of Monte Carlo simulators. Models are classified according to the physical mechanisms with…

High Energy Physics - Phenomenology · Physics 2009-11-10 N. Armesto

Events containing hadronically decaying heavy particles with large momentum, leading to so-called merged jets, are expected to play a significant role in both searches for new physics and measurements of Standard Model processes at the CERN…

High Energy Physics - Experiment · Physics 2011-09-06 Andrew Altheimer , Gustaaf Brooijmans

Nuclear modifications to collinear parton distribution functions are conventionally quantified by the ratios $ r^{\textrm{A}}_i(x,Q^2) = f^\textrm{A,proton}_i(x,Q^2) / f^\textrm{proton}_i(x,Q^2) $. For a given nucleus $A$, these ratios…

High Energy Physics - Phenomenology · Physics 2025-10-13 Meng-Quan Yang , Peng Ru , Ben-Wei Zhang

In this paper, we examine the strategies and prospects for distinguishing between traditional dark-matter models and models with non-minimal dark sectors --- including models of Dynamical Dark Matter (DDM) --- at hadron colliders. For…

High Energy Physics - Phenomenology · Physics 2015-03-11 Keith R. Dienes , Shufang Su , Brooks Thomas

We critically examine the definition of dijet cross sections at large rapidity intervals in hadron-hadron collisions, taking proper account of the various cuts applied in a realistic experimental setup. We argue that the dependence of the…

High Energy Physics - Phenomenology · Physics 2009-11-07 J. R. Andersen , V. Del Duca , S. Frixione , C. R. Schmidt , W. J. Stirling

We present a new model for simulating exclusive final states in minimum-bias collisions between hadrons. In a series of papers we have developed a Monte Carlo model based on Mueller's dipole picture of BFKL-evolution, supplemented with…

High Energy Physics - Phenomenology · Physics 2011-10-21 Christoffer Flensburg , Gösta Gustafson , Leif Lönnblad

New particles with large masses that decay into hadronically interacting particles are predicted by many models of physics beyond the Standard Model. A search for a massive resonance that decays into pairs of dijet resonances is performed…

High Energy Physics - Experiment · Physics 2024-01-11 ATLAS Collaboration

We propose a new framework, merging High Energy Factorization with final-state jet quenching effects due to interactions in a quark-gluon plasma, to compute di-jet rates at mid- and forward rapidity. It allows to consistently study the…

High Energy Physics - Phenomenology · Physics 2017-11-29 Michal Deák , Krzysztof Kutak , Konrad Tywoniuk

Triple differential dijet cross-sections in electron proton interactions measured with the H1 detector at HERA are presented. The data are compared to Monte Carlo simulations based on the DGLAP and CCFM parton evolution schemes. Effects of…

High Energy Physics - Experiment · Physics 2014-11-17 Kamil Sedlak

The study of Quantum Chromodynamics (QCD) at ultra-relativistic energies can be performed in a controlled environment through lepton-hadron deep inelastic scatterings. In such collisions, the high-energy partonic emissions that follow from…

High Energy Physics - Phenomenology · Physics 2025-01-23 Liliana Apolinário , Raghav Kunnawalkam Elayavalli , Nuno Olavo Madureira

Using a recently-developed perturbative-QCD approach for jet evolution in a dense quark-gluon plasma, we study the nuclear modification factor for the jet fragmentation function. The qualitative behaviour that we find is in agreement with…

High Energy Physics - Phenomenology · Physics 2020-12-02 P. Caucal , E. Iancu , A. H. Mueller , G. Soyez

A novel method is proposed here to precisely model the multi-dimensional features of QCD multi-jet events in hadron collisions. The method relies on the schematization of high-pT QCD processes as 2->2 reactions made complex by sub-leading…

High Energy Physics - Experiment · Physics 2017-12-08 P. De Castro Manzano , M. Dall'Osso , T. Dorigo , L. Finos , G. Kotkowski , G. Menardi , B. Scarpa

In ultra-relativistic heavy ion collisions at the LHC, each nucleus acts a sources of high-energy real photons that can scatter off the opposing nucleus in ultra-peripheral photonuclear ($\gamma+A$) collisions. Hard scattering processes…

Nuclear Experiment · Physics 2025-03-28 ATLAS Collaboration

Inclusive jet cross sections in photoproduction for events containing a $D^*$ meson have been measured with the ZEUS detector at HERA using an integrated luminosity of $78.6 {\rm pb}^{-1}$. The events were required to have a virtuality of…

High Energy Physics - Experiment · Physics 2012-08-27 ZEUS Collaboration

This paper reviews the most recent results on searches for physics beyond the Standard Model at Tevatron. Both the collider experiments: CDF and DO are performing a large variety of searches such as searches for scalar top and scalar bottom…

High Energy Physics - Experiment · Physics 2007-05-23 C. Pagliarone