Bibcode
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.; Suarez Gonzalez, J.; Alderweireldt, S.; Cornelis, T.; De Wolf, E. A.; Janssen, X.; Knutsson, A.; Lauwers, J.; Luyckx, S.; Van De Klundert, M.; Van Haevermaet, H.; Van Mechelen, P.; Van Remortel, N.; Van Spilbeeck, A.; Abu Zeid, S.; Blekman, F.; D'Hondt, J.; Daci, N.; De Bruyn, I.; Deroover, K.; Heracleous, N.; Keaveney, J.; Lowette, S.; Moreels, L.; Olbrechts, A.; Python, Q.; Strom, D.; Tavernier, S.; Van Doninck, W.; Van Mulders, P.; Van Onsem, G. P.; Van Parijs, I.; Barria, P.; Brun, H.; Caillol, C.; Clerbaux, B.; De Lentdecker, G.; 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.; Vander Velde, C.; 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.; Ocampo Rios, A. A.; Poyraz, D. et al.
Bibliographical reference
Journal of Instrumentation, Volume 12, Issue 02, pp. P02014 (2017).
Advertised on:
2
2017
Citations
785
Refereed citations
479
Description
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.