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We compare results of $k_t$-factorization approach and next-to-leading order collinear-factorization approach for dijet correlations in proton-proton collisions at RHIC energies. We discuss correlations in azimuthal angle as well as…

High Energy Physics - Phenomenology · Physics 2009-04-16 A. Szczurek , A. Rybarska , G. Slipek

We present a calculation of jet activity associated with pair production of top quarks at hadron colliders and supercolliders. Our approach is based upon a merger of $2\rightarrow 3$ matrix elements with initial and final state parton…

High Energy Physics - Phenomenology · Physics 2009-10-22 H. Baer , C. H. Chen , M. H. Reno

We perform calculations of Z+jet cross-section taking into account the transverse momenta of the initial partons. Transverse Momentum Dependent (TMD) parton densities obtained with the Parton Branching method are used and higher order…

High Energy Physics - Phenomenology · Physics 2019-05-15 M. Deak , A. van Hameren , H. Jung , A. Kusina , K. Kutak , M. Serino

We analyze three jet production in the central-forward and forward rapidity regions in proton-proton and proton-lead collisions at LHC energies. Our calculation relies on high-energy factorization with a single off-shell gluon obeying small…

High Energy Physics - Phenomenology · Physics 2014-07-11 Andreas van Hameren , Piotr Kotko , Krzysztof Kutak

We compare results of $k_t$-factorization approach and next-to-leading order collinear-factorization approach for photon-jet correlations in $pp$ and $p \bar p$ collisions at RHIC, Tevatron and LHC energies. We discuss correlations in…

High Energy Physics - Phenomenology · Physics 2009-04-16 T. Pietrycki , A. Szczurek

We present a preliminary study of both Single and Double Parton Scattering contributions to the inclusive 4-jet production in the kt-factorization framework at Leading Order and $E_{CM} = 7$ TeV. We compare our results to collinear results…

High Energy Physics - Phenomenology · Physics 2016-08-24 Mirko Serino

Jets are extended multipartonic systems and serve as a powerful tool for investigating the dynamics of emergent phenomena driven by many body QCD interactions. In heavy ion collisions, starting from their production during the perturbative…

High Energy Physics - Phenomenology · Physics 2025-05-26 Balbeer Singh

We discuss correlations in azimuthal angle as well as correlations in two-dimensional space of transverse momenta of two jets as well as photon and jet. Some $k_t$-factorization subprocesses are included for the first time in the…

Nuclear Theory · Physics 2011-07-19 Antoni Szczurek , Tomasz Pietrycki , Anna Rybarska , Gabriela Slipek

We present a new QCD event generator for hadron collider which can calculate one-, two- and three-jet cross sections at next-to-leading order accuracy. In this letter we study the transverse energy spectrum of three-jet hadronic events…

High Energy Physics - Phenomenology · Physics 2011-05-05 Zoltan Nagy

We calculate various azimuthal angle distributions for three jets produced in the forward rapidity region with transverse momenta $p_T>20\,\mathrm{GeV}$ in proton-proton (p-p) and proton-lead (p-Pb) collisions at center of mass energy…

High Energy Physics - Phenomenology · Physics 2020-10-28 Marcin Bury , Andreas van Hameren , Piotr Kotko , Krzysztof Kutak

Measurements of the differential cross sections for the production of exactly four jets in proton-proton collisions are presented as a function of the transverse momentum pt and pseudorapidity eta, together with the correlations in…

High Energy Physics - Experiment · Physics 2014-06-13 CMS Collaboration

We study the cross section for dijet production via direct photons, as seen at the HERA collider. Rather than assuming the standard factorisation formula for the cross section (where the incoming partons are assumed to be on-shell), we use…

High Energy Physics - Phenomenology · Physics 2009-09-25 J. R Forshaw , R. G. Roberts

Collinear (small-angle) and large-angle, as well as soft and hard radiations are investigated in three-jet and Z + two-jet events collected in proton-proton collisions at the LHC. The normalized production cross sections are measured as a…

High Energy Physics - Experiment · Physics 2021-09-30 CMS Collaboration

We compare results of $k_t$-factorization approach and next-to-leading order collinear-factorization approach for photon-jet correlations in $pp$ and $p \bar p$ collisions at RHIC, Tevatron and LHC energies. We discuss correlations in…

High Energy Physics - Phenomenology · Physics 2008-12-18 Antoni Szczurek , Tomasz Pietrycki

We study a large-$p_T$ three-photon production in proton-proton collisions at the LHC. We use the leading order (LO) approximation of the parton Reggeization approach consistently merged with the next-to-leading order corrections originated…

High Energy Physics - Phenomenology · Physics 2024-02-20 Anton Karpishkov , Vladimir Saleev

Azimuthal correlations between the two jets with the largest transverse momenta $ {p_{\mathrm{T}}} $ in inclusive 2-, 3-, and 4-jet events are presented for several regions of the leading jet $ {p_{\mathrm{T}}} $ up to 4 TeV. For 3- and…

High Energy Physics - Experiment · Physics 2018-07-12 CMS Collaboration

The study of global event shape variables can provide sensitive tests of predictions for multijet production in proton-proton collisions. This paper presents a study of several event shape variables calculated using jet four momenta in…

High Energy Physics - Experiment · Physics 2019-01-04 CMS Collaboration

The second-order QCD matrix elements give a very good agreement with experimental data on the angular distributions of the four-jet events in e+e- collisions at the Z0 resonance energy. Unfortunately the description of the sub-jet structure…

High Energy Physics - Phenomenology · Physics 2007-05-23 Johan André

We present predictions of single inclusive jet transverse momentum, energy, and Feynman-$x$ spectra at forward rapidity ($5.2 < y < 6.6$) in proton-proton collisions with $\sqrt{s} = 7$ and 13 TeV. Calculations based on high-energy…

High Energy Physics - Phenomenology · Physics 2017-10-31 Krzysztof Kutak , Hans Van Haevermaet , Pierre Van Mechelen

Jets are an important probe to identify the hard interaction of interest at the LHC. They are routinely used in Standard Model precision measurements as well as in searches for new heavy particles, including jet substructure methods. In…

High Energy Physics - Phenomenology · Physics 2016-08-24 Piotr Pietrulewicz , Frank J. Tackmann , Wouter J. Waalewijn
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