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We present a simple formalism for the evolution of timelike jets in which tree-level matrix element corrections can be systematically incorporated, up to arbitrary parton multiplicities and over all of phase space, in a way that…

High Energy Physics - Phenomenology · Physics 2013-08-06 W. T. Giele , D. A. Kosower , P. Z. Skands

We present predictions for $W^+W^-$ production (with exact decays) that are next-to-next-to-leading order (NNLO) accurate and consistently matched to a parton shower. The matching is achieved by upgrading, with MiNLO, the NLO calculation of…

High Energy Physics - Phenomenology · Physics 2018-08-29 Emanuele Re

We present all-order predictions for Higgs boson production plus at least one jet which are accurate to leading logarithm in $\hat s/|p_\perp|^2$. Our calculation includes full top and bottom quark mass dependence at all orders in the…

High Energy Physics - Phenomenology · Physics 2023-06-19 Jeppe R. Andersen , Hitham Hassan , Andreas Maier , Jérémy Paltrinieri , Andreas Papaefstathiou , Jennifer M. Smillie

We review the predictions on angular correlations and their recent experimental tests at LEP and HERA. Power behaviour of correlation functions appear for large angles and reflect the underlying fractal structure in jet evolution.…

High Energy Physics - Phenomenology · Physics 2017-08-23 Wolfgang Ochs

This letter presents the first measurement of the angle between different jet axes (denoted as ${\Delta}R$) in Pb$-$Pb collisions. The measurement is carried out in the 0$-$10% most-central events at $\sqrt{s_{\rm NN}} = 5.02$ TeV. Jets are…

Nuclear Experiment · Physics 2023-03-24 ALICE Collaboration

High precision data of lepton angular distributions in inclusive $Z$ boson production, reported by the CMS and ATLAS Collaborations, showed pronounced transverse momentum ($q_T$) dependencies of the $A_0$ and $A_2$ coefficients. Violation…

High Energy Physics - Phenomenology · Physics 2019-10-02 Jen-Chieh Peng , Wen-Chen Chang , Randall Evan McClellan , Oleg Teryaev

We discuss the theoretical bases that underpin the automation of the computations of tree-level and next-to-leading order cross sections, of their matching to parton shower simulations, and of the merging of matched samples that differ by…

High Energy Physics - Phenomenology · Physics 2015-06-19 J. Alwall , R. Frederix , S. Frixione , V. Hirschi , F. Maltoni , O. Mattelaer , H. -S. Shao , T. Stelzer , P. Torrielli , M. Zaro

Jet production at hadron colliders is a benchmark process to probe the dynamics of the strong interaction and the structure of the colliding hadrons. One of the most basic jet production observables is the single jet inclusive cross…

High Energy Physics - Phenomenology · Physics 2018-11-14 James Currie , Aude Gehrmann-De Ridder , Thomas Gehrmann , E. W. N. Glover , Alexander Huss , Joao Pires

In this article, we present a method to calculate a posteriori event weights at next-to-leading-order (NLO) QCD accuracy for a given jet event defined by the (anti-)$k_t$ algorithm relying on the conventional $2\to 1$ recombination. This is…

High Energy Physics - Phenomenology · Physics 2019-10-17 Manfred Kraus , Till Martini , Peter Uwer

A measurement of inclusive four-jet production in proton-proton collisions at a center-of-mass energy of 13 TeV is presented. The transverse momenta of jets within $\lvert\eta\rvert$ $\lt$ 4.7 reach down to 35, 30, 25, and 20 GeV for the…

High Energy Physics - Experiment · Physics 2022-02-03 CMS Collaboration

Hadronic decays of boosted resonances, e.g., top quark jets, at hadronic super colliders are frequent predictions in TeV-scale extensions of the Standard Model of Particle Physics. In such scenarios, accurate modeling of QCD radiation is…

High Energy Physics - Phenomenology · Physics 2016-10-31 Olivier Mattelaer , Manimala Mitra , Richard Ruiz

We present differential cross sections for the production of top-quark pairs in conjunction with up to two jets, computed at next-to leading order in perturbative QCD and consistently merged with a parton shower in the Sherpa+OpenLoops…

High Energy Physics - Phenomenology · Physics 2015-07-01 Stefan Höche , Frank Krauss , Philipp Maierhoefer , Stefano Pozzorini , Marek Schonherr , Frank Siegert

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 give a brief overview of our calculation of the next-to-next-to-leading order (NNLO) QCD corrections to Z+jet production in hadronic collisions. Phenomenological results are presented which comprise various differential distributions for…

High Energy Physics - Phenomenology · Physics 2016-07-07 A. Gehrmann-De Ridder , T. Gehrmann , E. W. N. Glover , A. Huss , T. A. Morgan

In these proceedings, we report on recent results related to vector boson-tagged jet production in heavy ion collisions and the related modification of jet substructure, such as jet shapes and jet momentum sharing distributions.…

High Energy Physics - Phenomenology · Physics 2018-03-14 Ivan Vitev

Using the CGC effective theory together with the hybrid factorisation, we study forward dijet production in proton-nucleus collisions beyond leading order. In this paper, we compute the "real" next-to-leading order (NLO) corrections, i.e.…

High Energy Physics - Phenomenology · Physics 2021-03-17 Edmond Iancu , Yair Mulian

Correlation between trigger and associated particles in jets produced on near and away sides of high-p_T triggers in heavy-ion collisions is studied. Hadronization of jets on both sides is treated by thermal-shower and shower-shower…

Nuclear Theory · Physics 2009-12-31 Rudolph C. Hwa , C. B. Yang

The azimuthal angular decorrelation of a vector boson and jet is sensitive to QCD radiation, and can be used to probe the quark-gluon plasma in heavy-ion collisions. By using a recoil-free jet definition, the sensitivity to contamination…

High Energy Physics - Phenomenology · Physics 2024-01-11 Yang-Ting Chien , Rudi Rahn , Ding Yu Shao , Wouter J. Waalewijn , Bin Wu

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 antenna subtraction method for NNLO QCD calculations is implemented in the NNLOJET parton-level event generator code to compute jet cross sections and related observables in electron-positron, lepton-hadron and hadron-hadron collisions.…