Observation of electroweak production of Wγ with two jets in proton-proton collisions at √s = 13 TeV

Observation of electroweak production of Wγ with two jets in proton-proton collisions at √s = 13 TeV

Bibliografske podrobnosti
Parent link:	Physics Letters B Vol. 811.— 2020.— [135988, 27 p.]
Korporativna značnica:	Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов
Drugi avtorji:	Sirunyan А. М., Tumasyan A. R., Adam W. Wolfgang, Ambrogi F. Federico, Tyurin N. E. Nikolay Evgenjevich, Babaev A. A. Anton Anatoljevich, Sukhikh L. G. Leonid Grigorievich
Izvleček:	Title screen A first observation is presented for the electroweak production of a W boson, a photon, and two jets in proton-proton collisions. The W boson decays are selected by requiring one identified electron or muon and an imbalance in transverse momentum. The two jets are required to have a high dijet mass and a large separation in pseudorapidity. The measurement is based on data collected with the CMS detector at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb−1. The observed (expected) significance for this process is 4.9 (4.6) standard deviations. After combining with previously reported CMS results at 8 TeV, the observed (expected) significance is 5.3 (4.8) standard deviations. The cross section for the electroweak Wγjj production in a restricted fiducial region is measured as 20.4±4.5fb and the total cross section for Wγ production in association with 2 jets in the same fiducial region is 108±16fb. All results are in good agreement with recent theoretical predictions. Constraints are placed on anomalous quartic gauge couplings in terms of dimension-8 effective field theory operators.
Jezik:	angleščina
Izdano:	2020
Teme:	электронный ресурс труды учёных ТПУ CMS physics vector boson scattering
Online dostop:	http://earchive.tpu.ru/handle/11683/73257 https://doi.org/10.1016/j.physletb.2020.135988
Format:	Elektronski Book Chapter
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=666198

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