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Jet substructure, defined by observables constructed from the distribution of constituents within a jet, provides the versatility to tailor observables to specific regions of QCD radiation phase space. This flexibility provides exciting new…

核实验 · 物理学 2021-10-12 James Mulligan

We study high-pt jets from QCD and from highly-boosted massive particles such as tops, W, Z and Higgs, and argue that infrared-safe observables can help reduce QCD backgrounds. Jets from QCD are characterized by different patterns of energy…

高能物理 - 唯象学 · 物理学 2014-11-18 Leandro G. Almeida , Seung J. Lee , Gilad Perez , George Sterman , Ilmo Sung , Joseph Virzi

The ALICE collaboration at the CERN LHC reports novel measurements of jet substructure in pp collisions at $\sqrt{s}$= 7 TeV and central Pb-Pb collisions at $\sqrt{s_{\rm{NN}}}$ = 2.76 TeV. Jet substructure of track-based jets is explored…

核实验 · 物理学 2020-06-17 ALICE Collaboration

Jets from boosted heavy particles have a typical angular scale which can be used to distinguish them from QCD jets. We introduce a machine learning strategy for jet substructure analysis using a spectral function on the angular scale. The…

高能物理 - 唯象学 · 物理学 2018-10-31 Sung Hak Lim , Mihoko M. Nojiri

Many analyses at the CERN LHC exploit the substructure of jets to identify heavy resonances produced with high momenta that decay into multiple quarks and/or gluons. This paper presents a new technique for correcting the substructure of…

高能物理 - 实验 · 物理学 2025-11-18 CMS Collaboration

Jet substructure has emerged as a critical tool for LHC searches, but studies so far have relied heavily on shower Monte Carlo simulations, which formally approximate QCD at leading-log level. We demonstrate that systematic higher-order QCD…

高能物理 - 唯象学 · 物理学 2012-09-18 Ilya Feige , Matthew D. Schwartz , Iain W. Stewart , Jesse Thaler

We review the history of jets in high energy physics, and describe in more detail the developments of the past ten years, discussing new algorithms for jet finding and their main characteristics, and summarising the status of perturbative…

高能物理 - 唯象学 · 物理学 2015-09-09 Matteo Cacciari

At the extreme energies of the Large Hadron Collider, massive particles can be produced at such high velocities that their hadronic decays are collimated and the resulting jets overlap. Deducing whether the substructure of an observed jet…

高能物理 - 实验 · 物理学 2016-06-01 Pierre Baldi , Kevin Bauer , Clara Eng , Peter Sadowski , Daniel Whiteson

Jet substructure provides a powerful probe of partonic interactions within the quark-gluon plasma (QGP) in heavy-ion collisions. In this paper, we present a systematic theoretical study of the groomed substructures for both inclusive jets…

高能物理 - 唯象学 · 物理学 2025-12-17 Sa Wang , Shuang Li , Jin-Wen Kang , Ben-Wei Zhang , Enke Wang

We explore the scale-dependence and correlations of jet substructure observables to improve upon existing techniques in the identification of highly Lorentz-boosted objects. Modified observables are designed to remove correlations from…

高能物理 - 唯象学 · 物理学 2016-06-09 James Dolen , Philip Harris , Simone Marzani , Salvatore Rappoccio , Nhan Tran

The High Energy Jets (HEJ) framework accounts for large logarithms arising from the wide angle hard gluon emissions. The resummation in HEJ is based on an approximation to allow fast evaluation for arbitrary multiplicity. The approximation…

高能物理 - 唯象学 · 物理学 2014-05-26 Tuomas Hapola

A method is proposed for distinguishing highly boosted hadronically decaying W's (W-jets) from QCD-jets using jet substructure. Previous methods, such as the filtering/mass-drop method, can give a factor of ~2 improvement in S/sqrt(B) for…

高能物理 - 唯象学 · 物理学 2011-05-12 Yanou Cui , Zhenyu Han , Matthew D. Schwartz

Unfolding, for example of distortions imparted by detectors, provides suitable and publishable representations of LHC data. Many methods for unbinned and high-dimensional unfolding using machine learning have been proposed, but no…

Jet grooming has emerged as a necessary and powerful tool in a precision jet physics program. In this paper, we present three results on jet grooming in perturbation theory, focusing on heavy jet mass in $e^+e^-\to$ hadrons collisions,…

高能物理 - 唯象学 · 物理学 2020-08-18 Andrew J. Larkoski

Exploiting the substructure of jets observed at the LHC to better understand and interpret the experimental data has recently been a very active area of research. In this thesis we study the substructure of high-p$_T$ QCD jets, which form a…

高能物理 - 唯象学 · 物理学 2021-11-23 Kamel Khelifa-Kerfa

The theoretical interpretation of jet observables in heavy-ion collisions is a complex task due to the intricate interplay of perturbative and non-perturbative effects. One way to reduce this complexity is to groom away soft, wide-angle…

高能物理 - 唯象学 · 物理学 2026-01-21 Liliana Apolinário , Diogo Costa , Alba Soto-Ontoso

Understanding the inner working of the quark-gluon plasma requires complete and precise jet substructure studies in heavy ion collisions. In this proceeding we discuss the use of quark and gluon jets as independent probes, and how their…

高能物理 - 唯象学 · 物理学 2019-02-20 Yang-Ting Chien

The radiation pattern within high energy quark- and gluon-initiated jets (jet substructure) is used extensively as a precision probe of the strong force as well as an environment for optimizing event generators with numerous applications in…

高能物理 - 实验 · 物理学 2023-09-15 The H1 collaboration , V. Andreev , M. Arratia , A. Baghdasaryan , A. Baty , K. Begzsuren , A. Bolz , V. Boudry , G. Brandt , D. Britzger , A. Buniatyan , L. Bystritskaya , A. J. Campbell , K. B. Cantun Avila , K. Cerny , V. Chekelian , Z. Chen , J. G. Contreras , J. Cvach , J. B. Dainton , K. Daum , A. Deshpande , C. Diaconu , A. Drees , G. Eckerlin , S. Egli , E. Elsen , L. Favart , A. Fedotov , J. Feltesse , M. Fleischer , A. Fomenko , C. Gal , J. Gayler , L. Goerlich , N. Gogitidze , M. Gouzevitch , C. Grab , T. Greenshaw , G. Grindhammer , D. Haidt , R. C. W. Henderson , J. Hessler , J. Hladký , D. Hoffmann , R. Horisberger , T. Hreus , F. Huber , P. M. Jacobs , M. Jacquet , T. Janssen , A. W. Jung , J. Katzy , C. Kiesling , M. Klein , C. Kleinwort , H. T. Klest , R. Kogler , P. Kostka , J. Kretzschmar , D. Krücker , K. Krüger , M. P. J. Landon , W. Lange , P. Laycock , S. H. Lee , S. Levonian , W. Li , J. Lin , K. Lipka , B. List , J. List , B. Lobodzinski , O. R. Long , E. Malinovski , H. -U. Martyn , S. J. Maxfield , A. Mehta , A. B. Meyer , J. Meyer , S. Mikocki , V. M. Mikuni , M. M. Mondal , K. Müller , B. Nachman , Th. Naumann , P. R. Newman , C. Niebuhr , G. Nowak , J. E. Olsson , D. Ozerov , S. Park , C. Pascaud , G. D. Patel , E. Perez , A. Petrukhin , I. Picuric , D. Pitzl , R. Polifka , S. Preins , V. Radescu , N. Raicevic , T. Ravdandorj , P. Reimer , E. Rizvi , P. Robmann , R. Roosen , A. Rostovtsev , M. Rotaru , D. P. C. Sankey , M. Sauter , E. Sauvan , S. Schmitt , B. A. Schmookler , G. Schnell , L. Schoeffel , A. Schöning , F. Sefkow , S. Shushkevich , Y. Soloviev , P. Sopicki , D. South , A. Specka , M. Steder , B. Stella , U. Straumann , C. Sun , T. Sykora , P. D. Thompson , F. Torales Acosta , D. Traynor , B. Tseepeldorj , Z. Tu , G. Tustin , A. Valkárová , C. Vallée , P. Van Mechelen , D. Wegener , E. Wünsch , J. Žáček , J. Zhang , Z. Zhang , R. Žlebčík , H. Zohrabyan , F. Zomer

Boosted resonances is a highly probable and enthusiastic scenario in any process probing the electroweak scale. Such objects when decaying into jets can easily blend with the cornucopia of jets from hard relative light QCD states. We review…

高能物理 - 唯象学 · 物理学 2015-05-30 Leandro G. Almeida , Raz Alon , Michael Spannowsky

The Large Hadron Collider (LHC) is the first machine that provides high enough energy to produce large numbers of boosted top quarks. The decay products of these top quarks are confined to a cone in the top quark flight direction and can be…

高能物理 - 实验 · 物理学 2015-09-14 Sebastian Schätzel