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We consider sample of inclusive photon+3jet events collected by the D0 experiment. The double parton fraction and effective cross section sigma_eff, a process-independent scale parameter related to the parton density inside the nucleon, are…

High Energy Physics - Experiment · Physics 2011-09-16 Dmitry Bandurin

Jet substructure observables are crucial for exploring the effects of the hot, dense medium and differentiating between quark and gluon jets. In this paper, we investigate the modification of jet shape by calculating the differential girth…

High Energy Physics - Phenomenology · Physics 2023-02-28 Si-Yu Tang , Wei Zhang , Wen-Di Deng , Cheng-De Tian , Fan Yang , Ren-Zhuo Wan

While strong attenuation of single particle production and particle correlations has provided convincing evidence for large parton energy loss in the QGP, its application to jet tomography has inherent limitations due to the inclusive…

High Energy Physics - Phenomenology · Physics 2009-11-18 Ben-Wei Zhang

Multi-Parton Interactions (MPI) in pp collisions have attracted the attention of the heavy-ion community since they can help to elucidate the origin of collective-like effects discovered in small collision systems at the LHC. In this work,…

High Energy Physics - Phenomenology · Physics 2020-10-28 Antonio Ortiz , Antonio Paz , Jose D. Romo , Sushanta Tripathy , Erik A. Zepeda , Irais Bautista

Jet-energy loss is an important sign of the creation of Quark-Gluon Plasma in heavy-ion collisions. High transverse momentum ($p_T$) partons are produced at the moment of initial hard scattering and are modified as a result of their…

High Energy Physics - Phenomenology · Physics 2023-07-18 Rouzbeh Modarresi Yazdi , Shuzhe Shi , Charles Gale , Sangyong Jeon

We present an analytical next-to-leading order QCD calculation of the partonic cross sections for the process $pp\rightarrow ({\text{jet}} \,h)X$, for which a specific hadron is observed inside a fully reconstructed jet. In order to obtain…

High Energy Physics - Phenomenology · Physics 2015-09-16 Tom Kaufmann , Asmita Mukherjee , Werner Vogelsang

We discuss the rapidity distribution of produced jets in heavy-ion collisions at LHC. The process allows one to determine to a good accuracy the value of the impact parameter of the nuclear collision in each single inelastic event. The…

High Energy Physics - Phenomenology · Physics 2007-05-23 G. Calucci , D. Treleani

Based on a pQCD inspired dynamical model of jet-medium interactions, Jewel, we have studied possible modifications to inclusive jet yields and a set of jet shape observables, namely, the fragmentation functions and radial momentum…

High Energy Physics - Phenomenology · Physics 2019-07-25 Rathijit Biswas , Subikash Choudhury , Sidharth Kumar Prasad , Supriya Das

Central lead-lead collisions at the LHC energies may pose a particular challenge for jet identification as multiple jets are produced per each collision event. We simulate the jet evolution in central Pb-Pb events at $\sqrt{s_{\rm NN}} =…

Nuclear Theory · Physics 2020-01-15 Iurii Karpenko , Joerg Aichelin , Pol Gossiaux , Martin Rohrmoser , Klaus Werner

A study of the particle multiplicity between jets with large rapidity separation has been performed using the D{\O}detector at the Fermilab Tevatron $p\bar{p}$ Collider operating at $\sqrt{s}=1.8$ TeV. A significant excess of…

High Energy Physics - Experiment · Physics 2008-11-26 S. Abachi

Longitudinal dynamics of particle production and rapidity-dependent jet energy loss are investigated in small and asymmetric colliding systems. We utilize an improved version of \textsc{martini} in which two improvements are implemented to…

Nuclear Theory · Physics 2016-12-21 Chanwook Park , Chun Shen , Sangyong Jeon , Charles Gale

Experimental data measured in sqrt(s)=2.76 TeV Pb+Pb collisions at the LHC show a significant enhancement of events with an unbalanced pair of reconstructed jet momenta in comparison with p+p collisions. This enhancement of momentum…

High Energy Physics - Phenomenology · Physics 2016-11-28 Florian Senzel , Oliver Fochler , Jan Uphoff , Zhe Xu , Carsten Greiner

Centrality selection has been observed to have a large effect on jet observables in pPb collisions at the Large Hadron Collider, stronger than that predicted by the nuclear modification of parton densities. We study to which extent simple…

High Energy Physics - Phenomenology · Physics 2015-02-11 Nestor Armesto , Doga Can Gulhan , Jose Guilherme Milhano

Motivated by recent experimental LHC measurements on the forward inclusive jet productions and based on our previous calculations on forward hadron productions, we calculate single inclusive jet cross-section in $pA$ collisions at forward…

High Energy Physics - Phenomenology · Physics 2023-02-08 Lei Wang , Lin Chen , Zhan Gao , Yu Shi , Shu-Yi Wei , Bo-Wen Xiao

We consider a hard jet production tagged by a muon pair in ultrarelativistic heavy ion collisions. The process cross section is calculated by the CompHEP Monte-Carlo generator taking into account full gamma*/Z interference pattern at LHC…

High Energy Physics - Phenomenology · Physics 2009-11-10 I. P. Lokhtin , A. V. Sherstnev , A. M. Snigirev

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 exchange of electroweak gauginos in the $t-$ or $u-$channel allows squark pair production at hadron colliders without color exchange between the squarks. This can give rise to events where little or no energy is deposited in the…

High Energy Physics - Phenomenology · Physics 2015-05-14 Sascha Bornhauser , Manuel Drees , Herbert K. Dreiner , Jong Soo Kim

A fundamental characteristic of hadron colliders is the abundant production of jets, which then are studied to learn about hard QCD, the proton structure, or nonperturbative effects. In the following the latest results and developments from…

High Energy Physics - Experiment · Physics 2013-05-28 Klaus Rabbertz

In this talk we review the models describing the hard diffractive production of jets or more generally high-mass states in presence of rapidity gaps in hadron-hadron and lepton-hadron collisions. By rapidity gaps we mean regions on the lego…

High Energy Physics - Phenomenology · Physics 2009-10-28 Vittorio Del Duca

The normalised differential top quark-antiquark production cross section is measured as a function of the jet multiplicity in proton-proton collisions at a centre-of-mass energy of 7 TeV at the LHC with the CMS detector. The measurement is…

High Energy Physics - Experiment · Physics 2015-05-19 CMS Collaboration