Data di Pubblicazione:
2017
Abstract:
OPEN ACCESS
Jet energy scale and resolution in the CMS experiment in pp collisions at 8 TeV
V. Khachatryan1, A.M. Sirunyan1, A. Tumasyan1, W. Adam2, E. Asilar2, T. Bergauer2, J. Brandstetter2, E. Brondolin2, M. Dragicevic2, J. Erö2Show full author list
Published 22 February 2017 • © CERN 2017 for the benefit of the CMS collaboration.
Journal of Instrumentation, Volume 12, February 2017
Article PDF
References
Citations
Article has an altmetric score of 2
Turn on MathJax
Share this article
Article information
Abstract
Improved jet energy scale corrections, based on a data sample corresponding to an integrated luminosity of 19.7 fb-1 collected by the CMS experiment in proton-proton collisions at a center-of-mass energy of 8 TeV, are presented. The corrections as a function of pseudorapidity η and transverse momentum pT are extracted from data and simulated events combining several channels and methods. They account successively for the effects of pileup, uniformity of the detector response, and residual data-simulation jet energy scale differences. Further corrections, depending on the jet flavor and distance parameter (jet size) R, are also presented. The jet energy resolution is measured in data and simulated events and is studied as a function of pileup, jet size, and jet flavor. Typical jet energy resolutions at the central rapidities are 15–20% at 30 GeV, about 10% at 100 GeV, and 5% at 1 TeV. The studies exploit events with dijet topology, as well as photon+jet, Z+jet and multijet events. Several new techniques are used to account for the various sources of jet energy scale corrections, and a full set of uncertainties, and their correlations, are provided.The final uncertainties on the jet energy scale are below 3% across the phase space considered by most analyses (pT;>30 GeV and 0| η| <5.). In the barrel region (| η| <1.3) an uncertainty below 1% for pT>30 GeV is reached, when excluding the jet flavor uncertainties, which are provided separately for different jet flavors. A new benchmark for jet energy scale determination at hadron colliders is achieved with 0.32% uncertainty for jets with \pt of the order of 165–330\GeV, and | η| <0.8.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
Large detector-systems performance; Performance of High Energy Physics Detectors
Elenco autori:
Khachatryan, V.; Sirunyan, A.M.; Tumasyan, A.; Adam, W.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Brondolin, E.; Dragicevic, M.; Erö, J.; Flechl, M.; Friedl, M.; Frühwirth, R.; Ghete, V.M.; Hartl, C.; Hörmann, N.; Hrubec, J.; Jeitler, M.; Knünz, V.; König, A.; Krammer, M.; Krätschmer, I.; Liko, D.; Matsushita, T.; Mikulec, I.; Rabady, D.; Rahbaran, B.; Rohringer, H.; Schieck, J.; Schöfbeck, R.; Strauss, J.; Treberer-Treberspurg, W.; Waltenberger, W.; Wulz, C.-E.; Mossolov, V.; Shumeiko, N.; Gonzalez, J. Suarez; Alderweireldt, S.; Cornelis, T.; Wolf, E.A. De; Janssen, X.; Knutsson, A.; Lauwers, J.; Luyckx, S.; Klundert, M. Van De; Haevermaet, H. Van; Mechelen, P. Van; Remortel, N. Van; Spilbeeck, A. Van; Zeid, S. Abu; Blekman, F.; D'Hondt, J.; Daci, N.; Bruyn, I. De; Deroover, K.; Heracleous, N.; Keaveney, J.; Lowette, S.; Moreels, L.; Olbrechts, A.; Python, Q.; Strom, D.; Tavernier, S.; Doninck, W. Van; Mulders, P. Van; Onsem, G.P. Van; Parijs, I. Van; Barria, P.; Brun, H.; Caillol, C.; Clerbaux, B.; Lentdecker, G. De; Fasanella, G.; Favart, L.; Grebenyuk, A.; Karapostoli, G.; Lenzi, T.; Léonard, A.; Maerschalk, T.; Marinov, A.; Perniè, L.; Randle-conde, A.; Reis, T.; Seva, T.; Velde, C. Vander; Vanlaer, P.; Yonamine, R.; Zenoni, F.; Zhang, F.; Beernaert, K.; Benucci, L.; Cimmino, A.; Crucy, S.; Dobur, D.; Fagot, A.; Garcia, G.; Gul, M.; Mccartin, J.; Rios, A.A. Ocampo; Poyraz, D.; Ryckbosch, D.; Salva, S.; Sigamani, M.; Strobbe, N.; Tytgat, M.; Driessche, W. Van; Yazgan, E.; Zaganidis, N.; Basegmez, S.; Beluffi, C.; Bondu, O.; Brochet, S.; Bruno, G.; Caudron, A.; Ceard, L.; Silveira, G.G. Da; Delaere, C.; Favart, D.; Forthomme, L.; Giammanco, A.; Hollar, J.; Jafari, A.; Jez, P.; Komm, M.; Lemaitre, V.; Mertens, A.; Nuttens, C.; Perrini, L.; Pin, A.; Piotrzkowski, K.; Popov, A.; Quertenmont, L.; Selvaggi, M.; Marono, M. Vidal; Beliy, N.; Hammad, G.H.; Júnior, W.L. Aldá; Alves, F.L.; Alves, G.A.; Brito, L.; Junior, M. Correa Martins; Hamer, M.; Hensel, C.; Herrera, C. Mora; Moraes, A.; Pol, M.E.; Teles, P. Rebello; Chagas, E. Belchior Batista Das; Carvalho, W.; Chinellato, J.; Custódio, A.; Costa, E.M. Da; Damiao, D. De Jesus; Martins, C. De Oliveira; Souza, S. Fonseca De; Guativa, L.M. Huertas; Malbouisson, H.; Figueiredo, D. Matos; Mundim, L.; Nogima, H.; Silva, W.L. Prado Da; Santoro, A.; Sznajder, A.; Manganote, E.J. Tonelli; Pereira, A. Vilela; Ahuja, S.; Bernardes, C.A.; Santos, A. De Souza; Dogra, S.; Tomei, T.R. Fernandez Perez; Gregores, E.M.; Mercadante, P.G.; Moon, C.S.; Novaes, S.F.; Padula, Sandra S.; Abad, D. Romero; Vargas, J.C. Ruiz; Aleksandrov, A.; Hadjiiska, R.; Iaydjiev, P.; Rodozov, M.; Stoykova, S.; Sultanov, G.; Vutova, M.; Dimitrov, A.; Glushkov, I.; Litov, L.; Pavlov, B.; Petkov, P.; Ahmad, M.; Bian, J.G.; Chen, G.M.; Chen, H.S.; Chen, M.; Cheng, T.; Du, R.; Jiang, C.H.; Plestina, R.; Romeo, F.; Shaheen, S.M.; Tao, J.; Wang, C.; Wang, Z.; Zhang, H.; Asawatangtrakuldee, C.; Ban, Y.; Li, Q.; Liu, S.; Mao, Y.; Qian, S.J.; Wang, D.; Xu, Z.; Avila, C.; Cabrera, A.; Sierra, L.F. Chaparro; Florez, C.; Gomez, J.P.; Moreno, B. Gomez; Sanabria, J.C.; Godinovic, N.; Lelas, D.; Puljak, I.; Cipriano, P.M. Ribeiro; Antunovic, Z.; Kovac, M.; Brigljevic, V.; Kadija, K.; Luetic, J.; Micanovic, S.; Sudic, L.; Attikis, A.; Mavromanolakis, G.; Mousa, J.; Nicolaou, C.; Ptochos, F.; Razis, P.A.; Rykaczewski, H.; Bodlak, M.; Finger, M.; M. Finger, Jr.; Assran, Y.; Elgammal, S.; Kamel, A. Ellithi; Mahmoud, M.A.; Mohammed, Y.; Calpas, B.; Kadastik, M.; Murumaa, M.; Raidal, M.; Tiko, A.; Veelken, C.; Eerola, P.; Pekkanen, J.; Voutilainen, M.; Härkönen, J.; Karimäki, V.; Kinnunen, R.; Lampén, T.; Lassila-Perini, K.; Lehti, S.; Lindén, T.; Luukka, P.; Mäenpää, T.; Peltola, T.; Tuominen, E.; Tuominiemi, J.; Tuovinen, E.; Wendland, L.; Talvitie, J.; Tuuva, T.; Besancon, M.; Couderc, F.; Dejardin, M.; Denegri, D.; Fabbro, B.; Faure, J.L.; Favaro, C.; Ferri, F.; Ganjour, S.; Giverna
Link alla scheda completa:
Link al Full Text:
Pubblicato in: