Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/6248
Title: Measurement of dijet azimuthal decorrelation in pp collisions at ?s=8TeV
Authors: CMS Collaboration
Karapınar, Güler
Karapınar, Güler
Keywords: Large Hadron Collider (LHC)
Compact Muon Solenoid
Issue Date: Oct-2016
Publisher: Springer Verlag
Source: Khachatryan, V., Sirunyan, A.M., Tumasyan, A., Adam, W., Asilar, E., Bergauer, T.,...CMS Collaboration (2016). Measurement of dijet azimuthal decorrelation in pp collisions at √s=8TeV. 76(10). doi:10.1140/epjc/s10052-016-4346-8
Abstract: A measurement of the decorrelation of azimuthal angles between the two jets with the largest transverse momenta is presented for seven regions of leading jet transverse momentum up to 2.2TeV. The analysis is based on the proton-proton collision data collected with the CMS experiment at a centre-of-mass energy of 8TeV corresponding to an integrated luminosity of 19.7fb-1. The dijet azimuthal decorrelation is caused by the radiation of additional jets and probes the dynamics of multijet production. The results are compared to fixed-order predictions of perturbative quantum chromodynamics (QCD), and to simulations using Monte Carlo event generators that include parton showers, hadronization, and multiparton interactions. Event generators with only two outgoing high transverse momentum partons fail to describe the measurement, even when supplemented with next-to-leading-order QCD corrections and parton showers. Much better agreement is achieved when at least three outgoing partons are complemented through either next-to-leading-order predictions or parton showers. This observation emphasizes the need to improve predictions for multijet production.
URI: http://doi.org/10.1140/epjc/s10052-016-4346-8
http://hdl.handle.net/11147/6248
ISSN: 1434-6044
Appears in Collections:Mathematics / Matematik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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