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ATLAS observed a limit for {the cross section of di-jets resonances, which is weaker than expected for a} mass slightly below $\approx$1\TeV. In addition, CMS reported hints for the (non-resonant) pair production of di-jet resonances $X$…

High Energy Physics - Phenomenology · Physics 2023-04-12 Andreas Crivellin , Claudio Andrea Manzari , Bruce Mellado , Salah-Eddine Dahbi

Multivariate analyses are emerging as important tools to understand properties of hadronic jets which play a key role in the LHC experimental program. We take a first step towards precise and differential theory predictions by calculating…

High Energy Physics - Phenomenology · Physics 2019-08-27 Massimiliano Procura , Wouter J. Waalewijn , Lisa Zeune

We propose a new description of the jet quenching phenomenon observed in nuclear collisions at high energies in which coherent parton branching plays a central role. This picture is based on the appearance of a dynamically generated scale,…

High Energy Physics - Phenomenology · Physics 2015-06-11 Jorge Casalderrey-Solana , Yacine Mehtar-Tani , Carlos A. Salgado , Konrad Tywoniuk

A search for dijet resonances in events with at least one isolated charged lepton is performed using $139~{\text{fb}}^{-1}$ of $\sqrt{s}=13$ TeV proton-proton collision data recorded by the ATLAS detector at the LHC. The dijet…

High Energy Physics - Experiment · Physics 2020-07-02 ATLAS Collaboration

Complete next-to leading order QCD predictions for (2+1) jet cross sections and jet rates in deep inelastic scattering (DIS) based on a new parton level Monte Carlo program are presented. All relevant helicity contributions to the total…

High Energy Physics - Phenomenology · Physics 2009-10-28 T. Brodkorb , E. Mirkes

n these proceedings I discuss several recent developments in the physics of heavy flavor jets in heavy ion collisions. i) The dijet mass modification in nucleus-nucleus reactions has been proposed as a new observable with enhanced…

High Energy Physics - Phenomenology · Physics 2019-06-25 Ivan Vitev

Back-to-back light and heavy flavor dijet measurements are promising experimental channels to accurately study the physics of jet production and propagation in a dense QCD medium. They can provide new insights into the path length, color…

High Energy Physics - Phenomenology · Physics 2019-02-22 Zhong-Bo Kang , Jared Reiten , Ivan Vitev , Boram Yoon

The mass distribution of jets produced in hard processes at the LHC plays an important role in several jet substructure related studies involving both Standard Model and BSM physics, especially in the context of boosted heavy particle…

High Energy Physics - Phenomenology · Physics 2012-12-18 Mrinal Dasgupta , Kamel Khelifa-Kerfa , Simone Marzani , Michael Spannowsky

We present a systematic formalism based on a factorization theorem in soft-collinear effective theory to describe non-global observables at hadron colliders, such as gap-between-jets cross sections. The cross sections are factorized into…

High Energy Physics - Phenomenology · Physics 2024-09-17 Thomas Becher , Matthias Neubert , Ding Yu Shao , Michel Stillger

The production of vector bosons in association with jets contains at least two unrelated scales. The first is the mass of the vector boson m_V and the second is the hard interaction scale giving rise to large transverse momenta of the…

High Energy Physics - Phenomenology · Physics 2009-06-01 Christian W. Bauer , Bjorn O. Lange

After a brief introduction to the physics of soft gluons in QCD we present a surprising prediction. Dijet production in hadron-hadron collisions provides the paradigm, i.e. h_1 +h_2 \to jj+X. In particular, we look at the case where there…

High Energy Physics - Phenomenology · Physics 2015-05-13 J. R. Forshaw , M. H. Seymour

Di-jet producion is studied in collisions of quasi-real photons at e+e- centre- of-mass energies sqrt(s)ee from 189 to 209 GeV at LEP. The data were collected with the OPAL detector. Jets are reconstructed using an inclusive k_t clustering…

High Energy Physics - Experiment · Physics 2008-11-26 The OPAL collaboration , G. Abbiendi

Jets physics in heavy ion reactions is an important new area of active research at the Relativistic Heavy Ion Collider (RHIC) and at the Large Hadron Collider (LHC) that paves the way for novel tests of QCD multi-parton dynamics in dense…

High Energy Physics - Phenomenology · Physics 2012-06-22 Yuncun He , Ivan Vitev , Ben-Wei Zhang

New physics, that is too heavy to be produced directly, can leave measurable imprints on the tails of kinematic distributions at the LHC. We use energetic QCD processes to perform novel measurements of the Standard Model (SM) Effective…

High Energy Physics - Phenomenology · Physics 2017-07-27 Simone Alioli , Marco Farina , Duccio Pappadopulo , Joshua T. Ruderman

Ultra-relativistic heavy ion collisions at RHIC and the LHC open exciting new possibilities for jet physics studies in the presence of hot and dense nuclear matter. Recent theoretical advances in understanding the QCD multi-parton dynamics…

High Energy Physics - Phenomenology · Physics 2007-05-23 Ivan Vitev

The Monte Carlo HYDJET++ model, that contains both hydrodynamic state and jets, is applied to study the influence of the interplay between soft and hard processes on the formation of the elliptic flow in heavy-ion collisions at RHIC and LHC…

High Energy Physics - Phenomenology · Physics 2014-11-20 E. Zabrodin , L. Bravina , G. Eyyubova , I. Lokhtin , L. Malinina , S. Petrushanko , A. Snigirev

Microquasar (MQ) jets are sites of particle acceleration and synchrotron emission. Such synchrotron radiation has been detected coming from jet regions of different spatial scales, which for the instruments at work nowadays appear as…

Astrophysics · Physics 2008-11-26 V. Bosch-Ramon

Recent results on dijet production in deep-inelastic scattering from the H1 experiment at the ep-collider HERA are presented. Internal jet structure has been studied in terms of jet shapes and subjet multiplicities in the Breit frame. Both…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. Wobisch

Some of the cleanest signals for new physics in the early runs of the LHC will involve strongly-produced particles which give rise to multiple leptons by undergoing cascade decays through weakly-interacting states to stable particles. Some…

High Energy Physics - Phenomenology · Physics 2010-04-06 Biplob Bhattacherjee , Anirban Kundu , Santosh Kumar Rai , Sreerup Raychaudhuri

A measurement is presented of dijet and 3-jet cross sections in low-|t| diffractive deep-inelastic scattering interactions of the type ep -> eXY, where the system X is separated by a large rapidity gap from a low-mass baryonic system Y.…

High Energy Physics - Experiment · Physics 2008-11-26 H1 Collaboration , C. Adloff