Measurement of dijet azimuthal decorrelation in pp collisions at √s=8TeV

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/105182

Title:	Measurement of dijet azimuthal decorrelation in pp collisions at √s=8TeV
Authors:	余欣珊;Asilar, E.;Blekman, F.;Vanlaer, P.;Fagot, A.;Mccartin, J.;Caudron, A.;Carvalho, W.;Rykaczewski, H.;Karimäki, V.;Favaro, C.;Ortona, G.;Gadrat, S.;Hoepfner, K.;Martin, M. Aldaya;Eichhorn, T.;Jung, H.;Kalogeropoulos, A.;Roland, B.;Erfle, J.;Junkes, A.;Kovalchuk, N.;Vanelderen, L.;Roscher, F.;Schröder, M.;Daskalakis, G.;Foudas, C.;Ujvari, B.;Sharma, S.;Etesami, S. M.;Khakzad, M.;Campanini, R.;Giordano, F.;Ghezzi, A.;Di Guida, S.;Sciacca, C.;Gasparini, U.;Kanishchev, K.;Magnani, A.;Savoy-Navarro, A.;Costa, M.;Demaria, N.;Maselli, S.;Staiano, A.;Son, D. C.;Parracho, P. G. Ferreira;Bunin, P.;Golutvin, I.;Lanev, A.;Kodolova, O.;Petrushanko, S.;De Saa, J. R. Castiñeiras;Bendavid, J.;Di Marco, E.;Fulcher, J.;Orsini, L.;Rohe, T.;Schönenberger, M.;Starodumov, A.;Petrakou, E.;Tsai, J. f.;Cerci, S.;Ozturk, S.;Polatoz, A.;Zeyrek, M.;Kaya, O.;Lucas, R.;Pesaresi, M.;Khan, A.;Cutts, D.;Ellison, J.;Hanson, G.;Branson, J. G.;Bunn, J.;Cumalat, J. P.;Gaz, A.;Jensen, F.;Chu, J.;Zakaria, M.;Penzo, A.;Wetzel, J.;Xiao, M.;Skuja, A.;Odell, N.;Pollack, B.;Karmgard, D. J.;Woodard, A.;Antonelli, L.;Luo, W.;Zuranski, A.;Ecklund, K. M.;Betchart, B.;Bodek, A.;Garcia-Bellido, A.;Chou, J. P.;Somalwar, S.;Riley, G.;Cox, B.;Belknap, D. A.;Perry, T.;Smith, N.
Contributors:	理學院物理學系
Keywords:	Astronomy;Astrophysics and Cosmology;Elementary Particles;Hadrons;Heavy Ions;Measurement Science and Instrumentation;Nuclear Energy;Nuclear Physics;Physics;Physics and Astronomy;Quantum Field Theories;Quantum Field Theory;Regular Article - Experimental Physics;String Theory
Date:	2016-10-01
Issue Date:	2026-04-23 12:09:56 (UTC+8)
Publisher:	Springer New York;Berlin/Heidelberg: Springer Berlin Heidelberg
Abstract:	摘要： 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 2.2 TeV . The analysis is based on the proton-proton collision data collected with the CMS experiment at a centre-of-mass energy of 8 TeV corresponding to an integrated luminosity of 19.7 fb - 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. 其他題名： Eur. Phys. J. C 出版者： Berlin/Heidelberg: Springer Berlin Heidelberg 出版日期： 2016-10 出處： The European physical journal. C, Particles and fields, 2016-10, Vol.76 (10) 資源來源： EBSCOhost Academic Search Premier 版權： CERN for the benefit of the CMS collaboration 2016 識別號： ISSN: 1434-6044 識別號： EISSN: 1434-6052 識別號： DOI: 10.1140/epjc/s10052-016-4346-8
Appears in Collections:	[Department of Physics] journal & Dissertation

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