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Top quarks produced in multi-TeV processes will have large Lorentz boosts, and their decay products will be highly collimated. In semileptonic decay modes, this often leads to the merging of the b-jet and the hard lepton according to…

High Energy Physics - Phenomenology · Physics 2011-04-04 Keith Rehermann , Brock Tweedie

This is a summary of the latest results of the DELPHI Collaboration on the properties of identified quark and gluon jets. It covers the measurement of the fragmentation functions of gluons and quarks and their scaling violation behaviour as…

High Energy Physics - Phenomenology · Physics 2007-05-23 Oliver Klapp , Patrick Langefeld

Jet physics provides a powerful tool to investigate interaction properties of quarks and gluons. These studies have been possible at an energy never investigated before at LHC. In this proceedings we review the main characteristics of…

High Energy Physics - Experiment · Physics 2016-08-02 Murilo Rangel

A search for a heavy resonance decaying into a top quark and a W boson in proton-proton collisions at $\sqrt{s} =$ 13 TeV is presented. The data analyzed were recorded with the CMS detector at the LHC and correspond to an integrated…

High Energy Physics - Experiment · Physics 2022-08-09 CMS Collaboration

We present the first study of charged-hadron production associated with jets originating from b quarks in proton-proton collisions at a center-of-mass energy of 5.02 TeV. The data sample used in this study was collected with the CMS…

High Energy Physics - Experiment · Physics 2021-05-14 CMS Collaboration

We develop a new formalism for computing and including both the perturbative and nonperturbative QCD contributions to the scale evolution of average gluon and quark jet multiplicities. The new method is motivated by recent progress in…

High Energy Physics - Phenomenology · Physics 2015-06-16 Paolo Bolzoni , Bernd A. Kniehl , Anatoly V. Kotikov

Jet substructure quantities are measured using jets groomed with the soft-drop grooming procedure in dijet events from 32.9 fb$^{-1}$ of $pp$ collisions collected with the ATLAS detector at $\sqrt{s} = 13$ TeV. These observables are…

High Energy Physics - Experiment · Physics 2020-03-25 ATLAS Collaboration

Results are reported from a search for new physics beyond the standard model in proton-proton collisions in final states with a single lepton; multiple jets, including at least one jet tagged as originating from the hadronization of a…

High Energy Physics - Experiment · Physics 2020-04-01 CMS Collaboration

The Large Hadron Collider will provide hadronic collisions at energies in the multi-TeV range, never explored before. The parton fractional momenta probed at such energies can be as low as x~2p_T/\sqrt(s) e^(-y)~10^-5 at large rapidities y,…

High Energy Physics - Experiment · Physics 2019-08-13 Salim Cerci , David d'Enterria

We compute the soft-drop jet-mass distribution from $pp$ collisions to NNLL accuracy while including nonperturbative corrections through a field-theory based formalism. Using these calculations, we assess the theoretical uncertainties on an…

High Energy Physics - Phenomenology · Physics 2023-05-10 Holmfridur S. Hannesdottir , Aditya Pathak , Matthew D. Schwartz , Iain W. Stewart

A search for new phenomena is performed using events with jets and significant transverse momentum imbalance, as inferred through the MT2 variable. The results are based on a sample of proton-proton collisions collected in 2016 at a…

High Energy Physics - Experiment · Physics 2017-11-08 CMS Collaboration

Inclusive jet production data are important for constraining the gluon distribution in the global QCD analysis of parton distribution functions. With the addition of recent CDF and D0 Run II jet data, we study a number of issues that play a…

High Energy Physics - Phenomenology · Physics 2010-04-23 Jon Pumplin , J. Huston , H. L. Lai , P. M. Nadolsky , Wu-Ki Tung , C. -P. Yuan

In the first talk I discuss the usefulness of jet grooming for testing jet quenching mechanisms, and I present a calculation of soft-drop jet mass distribution in proton-proton and heavy ion collisions. In the second talk I discuss the…

High Energy Physics - Phenomenology · Physics 2019-01-25 Yang-Ting Chien

Results of a search for new particles decaying into eight or more jets and moderate missing transverse momentum are presented. The analysis uses 139 fb$^{-1}$ of proton$-$proton collision data at $\sqrt{s} = 13$ TeV collected by the ATLAS…

High Energy Physics - Experiment · Physics 2020-11-24 ATLAS Collaboration

I present recent results from LEP which utilize differences between gluon and quark jets to make quantitative tests of QCD. The principal topic is a determination of the ratio of QCD color factors, C$_{\mathrm{A}}$/C$_{\mathrm{F}}$, using…

High Energy Physics - Experiment · Physics 2007-05-23 J. William Gary

We present a systematic investigation of flavor-dependent jet quenching using energy-energy correlators (EEC) in $\sqrt{\rm s}=5.02$ TeV Pb+Pb collisions. Employing the improved SHELL model, which incorporates collisional and radiative…

Nuclear Theory · Physics 2025-06-23 Shi-Yong Chen , Zi-Xuan Xu , Ke-Ming Shen , Wei Dai , Ben-Wei Zhang , En-Ke Wang

Results are reported from a search for supersymmetric particles in the final state with multiple jets and large missing transverse momentum. The search uses a sample of proton-proton collisions at $\sqrt{s} =$ 13 TeV collected with the CMS…

High Energy Physics - Experiment · Physics 2020-10-29 CMS Collaboration

Results are reported from a search for supersymmetric particles in proton-proton collisions in the final state with a single lepton; multiple jets, including at least one b-tagged jet; and large missing transverse momentum. The search uses…

High Energy Physics - Experiment · Physics 2017-10-23 CMS Collaboration

We present preliminary results on a search for squarks and gluinos in proton-antiproton collisions with a center-of-mass energy of 1.96 TeV and based on about 2.0 fb-1 of data collected by the CDF detector in the Tevatron Run II. Events…

High Energy Physics - Experiment · Physics 2008-10-21 G. De Lorenzo , M. D'Onofrio , O. Gonzalez-Lopez , M. Martinez-Perez , M. Vidal

The modification of jets by interaction with the Quark Gluon Plasma has been extensively established through the comparison of observables computed for samples of jets produced in nucleus-nucleus collisions and proton-proton collisions. The…

High Energy Physics - Phenomenology · Physics 2025-11-17 Miguel Crispim Romão , João Arruda Gonçalves , José Guilherme Milhano
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