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Tracking down hyper-boosted top quarks

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Larkoski, Andrew J. Maltoni, Fabio [UCL] Selvaggi, Michele [UCL]

The identification of hadronically decaying heavy states, such as vector bosons, the Higgs, or the top quark, produced with large transverse boosts has been and will continue to be a central focus of the jet physics program at the Large Hadron Collider (LHC). At a future hadron collider working at an order-of-magnitude larger energy than the LHC, these heavy states would be easily produced with transverse boosts of several TeV. At these energies, their decay products will be separated by angular scales comparable to individual calorimeter cells, making the current jet substructure identification techniques for hadronic decay modes not directly employable. In addition, at the high energy and luminosity projected at a future hadron collider, there will be numerous sources for contamination including initial- and final-state radiation, underlying event, or pile-up which must be mitigated. We propose a simple strategy to tag such “hyper-boosted” objects that defines jets with radii that scale inversely proportional to their transverse boost and combines the standard calorimetric information with charged track-based observables. By means of a fast detector simulation, we apply it to top quark identification and demonstrate that our method efficiently discriminates hadronically decaying top quarks from light QCD jets up to transverse boosts of 20 TeV. Our results open the way to tagging heavy objects with energies in the multi-TeV range at present and future hadron colliders

Type de document Article de périodique (Journal article) – Article de recherche
Type d'accès Accès libre
Année de publication 2015
Langue Anglais
Information sur le périodique "Journal of High Energy Physics" - Vol. 2015, no.6, p. 32 [1-36] (2015)
Peer reviewed oui
Editeur Springer Berlin ((Germany) Heidelberg)
issn 1126-6708
e-issn 1029-8479
Statut de la publication Publié
Affiliations UCL - SST/IRMP - Institut de recherche en mathématique et physique
Mots-clés Hadronic Colliders ; Jets
Liens
  1. ATLAS collaboration, Observation of a new particle in the search for the standard model Higgs boson with the ATLAS detector at the LHC, Phys. Lett. B 716 (2012) 1 [ arXiv:1207.7214 ] [ INSPIRE ].
  2. CMS collaboration, Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC, Phys. Lett. B 716 (2012) 30 [ arXiv:1207.7235 ] [ INSPIRE ].
  3. Abdesselam A., Belyaev A., Kuutmann E. Bergeaas, Bitenc U., Brooijmans G., Butterworth J., de Renstrom P. Bruckman, Franzosi D. Buarque, Buckingham R., Chapleau B., Dasgupta M., Davison A., Dolen J., Ellis S., Fassi F., Ferrando J., Frandsen M. T., Frost J., Gadfort T., Glover N., Haas A., Halkiadakis E., Hamilton K., Hays C., Hill C., Jackson J., Issever C., Karagoz M., Katz A., Kreczko L., Krohn D., Lewis A., Livermore S., Loch P., Maksimovic P., March-Russell J., Martin A., McCubbin N., Newbold D., Ott J., Perez G., Policchio A., Rappoccio S., Raklev A. R., Richardson P., Salam G. P., Sannino F., Santiago J., Schwartzman A., Shepherd-Themistocleous C., Sinervo P., Sjoelin J., Son M., Spannowsky M., Strauss E., Takeuchi M., Tseng J., Tweedie B., Vermilion C., Voigt J., Vos M., Wacker J., Wagner-Kuhr J., Wilson M. G., Boosted objects: a probe of beyond the standard model physics, 10.1140/epjc/s10052-011-1661-y
  4. Altheimer A, Arora S, Asquith L, Brooijmans G, Butterworth J, Campanelli M, Chapleau B, Cholakian A E, Chou J P, Dasgupta M, Davison A, Dolen J, Ellis S D, Essig R, Fan J J, Field R, Fregoso A, Gallicchio J, Gershtein Y, Gomes A, Haas A, Halkiadakis E, Halyo V, Hoeche S, Hook A, Hornig A, Huang P, Izaguirre E, Jankowiak M, Kribs G, Krohn D, Larkoski A J, Lath A, Lee C, Lee S J, Loch P, Maksimovic P, Martinez M, Miller D W, Plehn T, Prokofiev K, Rahmat R, Rappoccio S, Safonov A, Salam G P, Schumann S, Schwartz M D, Schwartzman A, Seymour M, Shao J, Sinervo P, Son M, Soper D E, Spannowsky M, Stewart I W, Strassler M, Strauss E, Takeuchi M, Thaler J, Thomas S, Tweedie B, Sierra R Vasquez, Vermilion C K, Villaplana M, Vos M, Wacker J, Walker D, Walsh J R, Wang L-T, Wilbur S, Zhu W, Jet substructure at the Tevatron and LHC: new results, new tools, new benchmarks, 10.1088/0954-3899/39/6/063001
  5. Altheimer A., Arce A., Asquith L., Backus Mayes J., Kuutmann E. Bergeaas, Berger J., Bjergaard D., Bryngemark L., Buckley A., Butterworth J., Cacciari M., Campanelli M., Carli T., Chala M., Chapleau B., Chen C., Chou J. P., Cornelissen Th., Curtin D., Dasgupta M., Davison A., de Almeida Dias F., de Cosa A., de Roeck A., Debenedetti C., Doglioni C., Ellis S. D., Fassi F., Ferrando J., Fleischmann S., Freytsis M., Gonzalez Silva M. L., de la Hoz S. Gonzalez, Guescini F., Han Z., Hook A., Hornig A., Izaguirre E., Jankowiak M., Juknevich J., Kaci M., Kar D., Kasieczka G., Kogler R., Larkoski A., Loch P., Lopez Mateos D., Marzani S., Masetti L., Mateu V., Miller D. W., Mishra K., Nef P., Nordstrom K., Oliver Garcia E., Penwell J., Pilot J., Plehn T., Rappoccio S., Rizzi A., Rodrigo G., Safonov A., Salam G. P., Salt J., Schaetzel S., Schioppa M., Schmidt A., Scholtz J., Schwartzman A., Schwartz M. D., Segala M., Son M., Soyez G., Spannowsky M., Stewart I., Strom D., Swiatlowski M., Sanchez Martinez V., Takeuchi M., Thaler J., Thompson E. N., Tran N. V., Vermilion C., Villaplana M., Vos M., Wacker J., Walsh J., Boosted objects and jet substructure at the LHC. Report of BOOST2012, held at IFIC Valencia, 23rd–27th of July 2012, 10.1140/epjc/s10052-014-2792-8
  6. CMS collaboration, Jet substructure algorithms, CMS-PAS-JME-10-013 (2010).
  7. ATLAS collaboration, Jet substructure in ATLAS, ATL-PHYS-PROC-2011-142 (2011).
  8. ATLAS collaboration, Studies of the impact and mitigation of pile-up on large-R and groomed jets in ATLAS at s $$ \sqrt{s} $$ = 7 TeV, ATLAS-CONF-2012-066 (2012).
  9. CMS collaboration, Shape, transverse size and charged hadron multiplicity of jets in pp collisions at 7 TeV, JHEP 06 (2012) 160 [ arXiv:1204.3170 ] [ INSPIRE ].
  10. ATLAS collaboration, ATLAS measurements of the properties of jets for boosted particle searches, Phys. Rev. D 86 (2012) 072006 [ arXiv:1206.5369 ] [ INSPIRE ].
  11. ATLAS collaboration, Performance of large-R jets and jet substructure reconstruction with the ATLAS detector, ATLAS-CONF-2012-065 (2012).
  12. ATLAS collaboration, Jet mass and substructure of inclusive jets in s $$ \sqrt{s} $$ = 7 TeV pp collisions with the ATLAS experiment, JHEP 05 (2012) 128 [ arXiv:1203.4606 ] [ INSPIRE ].
  13. ATLAS collaboration, Performance of jet substructure techniques for large-R jets in proton-proton collisions at s $$ \sqrt{s} $$ = 7 TeV using the ATLAS detector, JHEP 09 (2013) 076 [ arXiv:1306.4945 ] [ INSPIRE ].
  14. ATLAS collaboration, Measurement of jet shapes in top-quark pair events at s $$ \sqrt{s} $$ = 7 TeV using the ATLAS detector, Eur. Phys. J. C 73 (2013) 2676 [ arXiv:1307.5749 ] [ INSPIRE ].
  15. ATLAS collaboration, Performance and validation of Q-jets at the ATLAS detector in pp collisions at s $$ \sqrt{s} $$ = 8 TeV in 2012, ATLAS-CONF-2013-087 (2013).
  16. ATLAS collaboration, Jet charge studies with the ATLAS detector using s $$ \sqrt{s} $$ = 8 TeV proton-proton collision data, ATLAS-CONF-2013-086 (2013).
  17. ATLAS collaboration, Performance of pile-up subtraction for jet shapes, ATLAS-CONF-2013-085 (2013).
  18. ATLAS collaboration, Pile-up subtraction and suppression for jets in ATLAS, ATLAS-CONF-2013-083 (2013).
  19. CMS collaboration, Identifying hadronically decaying vector bosons merged into a single jet, CMS-PAS-JME-13-006 (2013).
  20. CMS collaboration, Performance of quark/gluon discrimination in 8 TeV pp data, CMS-PAS-JME-13-002 (2013).
  21. CMS collaboration, Pileup jet identification, CMS-PAS-JME-13-005 (2013).
  22. CMS collaboration, Measurement of the subjet multiplicity in dijet events from proton-proton collisions at s $$ \sqrt{s} $$ = 7 TeV, CMS-PAS-QCD-10-041 (2010).
  23. ATLAS collaboration, Light-quark and gluon jet discrimination in pp collisions at s $$ \sqrt{s} $$ = 7 TeV with the ATLAS detector, Eur. Phys. J. C 74 (2014) 3023 [ arXiv:1405.6583 ] [ INSPIRE ].
  24. ATLAS collaboration, P. Loch, Studies of jet shapes and jet substructure in proton-proton collisions at s $$ \sqrt{s} $$ = 7 TeV with ATLAS, PoS(EPS-HEP 2013)442 .
  25. CMS collaboration, Boosted top jet tagging at CMS, CMS-PAS-JME-13-007 (2013).
  26. CMS collaboration, V tagging observables and correlations, CMS-PAS-JME-14-002 (2014).
  27. CMS collaboration, Pileup removal algorithms, CMS-PAS-JME-14-001 (2014).
  28. ATLAS collaboration, Tagging and suppression of pileup jets with the ATLAS detector, ATLAS-CONF-2014-018 (2014).
  29. Butterworth Jonathan M., Davison Adam R., Rubin Mathieu, Salam Gavin P., Jet Substructure as a New Higgs-Search Channel at the Large Hadron Collider, 10.1103/physrevlett.100.242001
  30. S.D. Ellis, C.K. Vermilion and J.R. Walsh, Techniques for improved heavy particle searches with jet substructure, Phys. Rev. D 80 (2009) 051501 [ arXiv:0903.5081 ] [ INSPIRE ].
  31. S.D. Ellis, C.K. Vermilion and J.R. Walsh, Recombination algorithms and jet substructure: pruning as a tool for heavy particle searches, Phys. Rev. D 81 (2010) 094023 [ arXiv:0912.0033 ] [ INSPIRE ].
  32. Krohn David, Thaler Jesse, Wang Lian-Tao, Jet trimming, 10.1007/jhep02(2010)084
  33. Soyez Gregory, Salam Gavin P., Kim Ji-Hun, Dutta Souvik, Cacciari Matteo, Pileup Subtraction for Jet Shapes, 10.1103/physrevlett.110.162001
  34. D. Krohn, M.D. Schwartz, M. Low and L.-T. Wang, Jet cleansing: pileup removal at high luminosity, Phys. Rev. D 90 (2014) 065020 [ arXiv:1309.4777 ] [ INSPIRE ].
  35. Dasgupta Mrinal, Fregoso Alessandro, Marzani Simone, Salam Gavin P., Towards an understanding of jet substructure, 10.1007/jhep09(2013)029
  36. Larkoski Andrew J., Marzani Simone, Soyez Gregory, Thaler Jesse, Soft drop, 10.1007/jhep05(2014)146
  37. Berta Peter, Spousta Martin, Miller David W., Leitner Rupert, Particle-level pileup subtraction for jets and jet shapes, 10.1007/jhep06(2014)092
  38. Cacciari Matteo, Salam Gavin P., Soyez Gregory, SoftKiller, a particle-level pileup removal method, 10.1140/epjc/s10052-015-3267-2
  39. Bertolini Daniele, Harris Philip, Low Matthew, Tran Nhan, Pileup per particle identification, 10.1007/jhep10(2014)059
  40. Y. Gershtein et al., Working group report: new particles, forces and dimensions, arXiv:1311.0299 [ INSPIRE ].
  41. Future circular collider study kick-off meeting, https://indico.cern.ch/event/282344/ (2014).
  42. Workshop on future hig‘Workshop on future high energy circular colliders, http://indico.ihep.ac.cn/conferenceDisplay.py?confId=3813 (2013).
  43. P. Torrielli, Rare standard model processes for present and future hadronic colliders, arXiv:1407.1623 [ INSPIRE ].
  44. CMS collaboration, Particle-flow event reconstruction in CMS and performance for jets, taus, and MET, CMS-PAS-PFT-09-001 (2009).
  45. Krohn David, Thaler Jesse, Wang Lian-Tao, Jets with variable R, 10.1088/1126-6708/2009/06/059
  46. de Favereau J., , Delaere C., Demin P., Giammanco A., Lemaître V., Mertens A., Selvaggi M., DELPHES 3: a modular framework for fast simulation of a generic collider experiment, 10.1007/jhep02(2014)057
  47. Selvaggi Michele, DELPHES 3: A modular framework for fast-simulation of generic collider experiments, 10.1088/1742-6596/523/1/012033
  48. A. Avetisyan et al., Methods and results for standard model event generation at s $$ \sqrt{s} $$ = 14 TeV, 33 TeV and 100 TeV proton colliders (a Snowmass whitepaper), arXiv:1308.1636 [ INSPIRE ].
  49. J. Anderson et al., Snowmass energy frontier simulations, arXiv:1309.1057 [ INSPIRE ].
  50. A.J. Larkoski and J. Thaler, Aspects of jets at 100 TeV, Phys. Rev. D 90 (2014) 034010 [ arXiv:1406.7011 ] [ INSPIRE ].
  51. Cacciari Matteo, Salam Gavin P, Soyez Gregory, The anti-kt jet clustering algorithm, 10.1088/1126-6708/2008/04/063
  52. Bertolini Daniele, Chan Tucker, Thaler Jesse, Jet observables without jet algorithms, 10.1007/jhep04(2014)013
  53. Larkoski Andrew J., Neill Duff, Thaler Jesse, Jet shapes with the broadening axis, 10.1007/jhep04(2014)017
  54. G. Salam, unpublished.
  55. Z. Han, Jet radiation radius, Phys. Rev. D 90 (2014) 074033 [ arXiv:1402.1494 ] [ INSPIRE ].
  56. Catani S., Dokshitzer Yu.L., Seymour M.H., Webber B.R., Longitudinally-invariant k⊥-clustering algorithms for hadron-hadron collisions, 10.1016/0550-3213(93)90166-m
  57. S.D. Ellis and D.E. Soper, Successive combination jet algorithm for hadron collisions, Phys. Rev. D 48 (1993) 3160 [ hep-ph/9305266 ] [ INSPIRE ].
  58. Dokshitzer Yu.L, Leder G.D, Moretti S, Webber B.R, Better jet clustering algorithms, 10.1088/1126-6708/1997/08/001
  59. M. Wobisch and T. Wengler, Hadronization corrections to jet cross-sections in deep inelastic scattering, hep-ph/9907280 [ INSPIRE ].
  60. M. Wobisch, Measurement and QCD analysis of jet cross-sections in deep inelastic positron proton collisions at s $$ \sqrt{s} $$ = 300 GeV, DESY-THESIS-2000-049 (2000).
  61. Plehn Tilman, Salam Gavin P., Spannowsky Michael, Fat Jets for a Light Higgs Boson, 10.1103/physrevlett.104.111801
  62. Plehn Tilman, Spannowsky Michael, Takeuchi Michihisa, Zerwas Dirk, Stop reconstruction with tagged tops, 10.1007/jhep10(2010)078
  63. S. Schaetzel and M. Spannowsky, Tagging highly boosted top quarks, Phys. Rev. D 89 (2014) 014007 [ arXiv:1308.0540 ] [ INSPIRE ].
  64. Alwall J., Frederix R., Frixione S., Hirschi V., Maltoni F., Mattelaer O., Shao H.-S., Stelzer T., Torrielli P., Zaro M., The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations, 10.1007/jhep07(2014)079
  65. Sjöstrand Torbjörn, Mrenna Stephen, Skands Peter, PYTHIA 6.4 physics and manual, 10.1088/1126-6708/2006/05/026
  66. Sjöstrand Torbjörn, Mrenna Stephen, Skands Peter, A brief introduction to PYTHIA 8.1, 10.1016/j.cpc.2008.01.036
  67. Cacciari Matteo, Salam Gavin P., Soyez Gregory, FastJet user manual : (for version 3.0.2), 10.1140/epjc/s10052-012-1896-2
  68. Ellis S.D., Huston J., Hatakeyama K., Loch P., Tönnesmann M., Jets in hadron–hadron collisions, 10.1016/j.ppnp.2007.12.002
  69. Salam Gavin P., Towards jetography, 10.1140/epjc/s10052-010-1314-6
  70. Thaler Jesse, Van Tilburg Ken, Identifying boosted objects with N-subjettiness, 10.1007/jhep03(2011)015
  71. Thaler Jesse, Van Tilburg Ken, Maximizing boosted top identification by minimizing N-subjettiness, 10.1007/jhep02(2012)093
  72. Larkoski Andrew J., Salam Gavin P., Thaler Jesse, Energy correlation functions for jet substructure, 10.1007/jhep06(2013)108
  73. A.J. Larkoski, I. Moult and D. Neill, Building a better boosted top tagger, Phys. Rev. D 91 (2015) 034035 [ arXiv:1411.0665 ] [ INSPIRE ].
  74. W.J. Waalewijn, Calculating the charge of a jet, Phys. Rev. D 86 (2012) 094030 [ arXiv:1209.3019 ] [ INSPIRE ].
  75. Chang Hsi-Ming, Procura Massimiliano, Thaler Jesse, Waalewijn Wouter J., Calculating Track-Based Observables for the LHC, 10.1103/physrevlett.111.102002
  76. H.-M. Chang, M. Procura, J. Thaler and W.J. Waalewijn, Calculating track thrust with track functions, Phys. Rev. D 88 (2013) 034030 [ arXiv:1306.6630 ] [ INSPIRE ].
  77. Marchesini G., Webber B.R., Abbiendi G., Knowles I.G., Seymour M.H., Stanco L., HERWIG 5.1 - a Monte Carlo event generator for simulating hadron emission reactions with interfering gluons, 10.1016/0010-4655(92)90055-4
  78. Corcella Gennaro, Knowles Ian G, Marchesini Giuseppe, Moretti Stefano, Odagiri Kosuke, Richardson Peter, Seymour Michael H, Webber Bryan R, HERWIG 6: an event generator for hadron emission reactions with interfering gluons (including supersymmetric processes), 10.1088/1126-6708/2001/01/010
  79. G. Corcella et al., HERWIG 6.5 release note, hep-ph/0210213 [ INSPIRE ].
  80. Christiansen Jesper R., Sjöstrand Torbjörn, Weak gauge boson radiation in parton showers, 10.1007/jhep04(2014)115
  81. F. Krauss, P. Petrov, M. Schoenherr and M. Spannowsky, Measuring collinear W emissions inside jets, Phys. Rev. D 89 (2014) 114006 [ arXiv:1403.4788 ] [ INSPIRE ].
  82. M. Dasgupta and G.P. Salam, Resummation of nonglobal QCD observables, Phys. Lett. B 512 (2001) 323 [ hep-ph/0104277 ] [ INSPIRE ].
  83. Banfi A., Dasgupta M., Problems in resumming interjet energy flows with kt clustering, 10.1016/j.physletb.2005.08.125
  84. Seymour M.H., Jet shapes in hadron collisions: Higher orders, resummation and hadronization, 10.1016/s0550-3213(97)00711-6
  85. Gerwick Erik, Schumann Steffen, Gripaios Ben, Webber Bryan, QCD jet rates with the inclusive generalized k t algorithms, 10.1007/jhep04(2013)089
  86. Dasgupta Mrinal, Dreyer Frédéric, Salam Gavin P., Soyez Gregory, Small-radius jets to all orders in QCD, 10.1007/jhep04(2015)039
  87. Larkoski Andrew J., Moult Ian, Neill Duff, Power counting to better jet observables, 10.1007/jhep12(2014)009
  88. CMS collaboration, CMS physics: technical design report. Volume 1: detector performance and software, CERN-LHCC-2006-001 (2006).
  89. CMD collaboration, CMS technical design report for the pixel detector upgrade, CERN-LHCC-2012-016 (2012).
  90. Agostinelli S., Allison J., Amako K., Apostolakis J., Araujo H., Arce P., Asai M., Axen D., Banerjee S., Barrand G., Behner F., Bellagamba L., Boudreau J., Broglia L., Brunengo A., Burkhardt H., Chauvie S., Chuma J., Chytracek R., Cooperman G., Cosmo G., Degtyarenko P., Dell'Acqua A., Depaola G., Dietrich D., Enami R., Feliciello A., Ferguson C., Fesefeldt H., Folger G., Foppiano F., Forti A., Garelli S., Giani S., Giannitrapani R., Gibin D., Gómez Cadenas J.J., González I., Gracia Abril G., Greeniaus G., Greiner W., Grichine V., Grossheim A., Guatelli S., Gumplinger P., Hamatsu R., Hashimoto K., Hasui H., Heikkinen A., Howard A., Ivanchenko V., Johnson A., Jones F.W., Kallenbach J., Kanaya N., Kawabata M., Kawabata Y., Kawaguti M., Kelner S., Kent P., Kimura A., Kodama T., Kokoulin R., Kossov M., Kurashige H., Lamanna E., Lampén T., Lara V., Lefebure V., Lei F., Liendl M., Lockman W., Longo F., Magni S., Maire M., Medernach E., Minamimoto K., Mora de Freitas P., Morita Y., Murakami K., Nagamatu M., Nartallo R., Nieminen P., Nishimura T., Ohtsubo K., Okamura M., O'Neale S., Oohata Y., Paech K., Perl J., Pfeiffer A., Pia M.G., Ranjard F., Rybin A., Sadilov S., Di Salvo E., Santin G., Sasaki T., Savvas N., Sawada Y., Scherer S., Sei S., Sirotenko V., Smith D., Starkov N., Stoecker H., Sulkimo J., Takahata M., Tanaka S., Tcherniaev E., Safai Tehrani E., Tropeano M., Truscott P., Uno H., Urban L., Urban P., Verderi M., Walkden A., Wander W., Weber H., Wellisch J.P., Wenaus T., Williams D.C., Wright D., Yamada T., Yoshida H., Zschiesche D., Geant4—a simulation toolkit, 10.1016/s0168-9002(03)01368-8
  91. CMS collaboration, High p t jets tracking, https://twiki.cern.ch/twiki/bin/view/CMSPublic/HighPtTrackingDP .
  92. Stewart Iain W., Tackmann Frank J., Waalewijn Wouter J., NJettiness: An Inclusive Event Shape to Veto Jets, 10.1103/physrevlett.105.092002
  93. ATLAS collaboration, Expected performance of the ATLAS experiment — Detector, trigger and physics, arXiv:0901.0512 [ INSPIRE ].
Référence bibliographique Larkoski, Andrew J. ; Maltoni, Fabio ; Selvaggi, Michele. Tracking down hyper-boosted top quarks. In: Journal of High Energy Physics, Vol. 2015, no.6, p. 32 [1-36] (2015)
Permalien http://hdl.handle.net/2078.1/172805