Measurements of electroweak production of a photon in association with two jets in proton-proton collisions at $$ sqrt{s}=13 $$ TeV | CU Experts

; A; bstract; ; ; The first observation of electroweak production of a photon in association with two forward jets in proton-proton collisions is presented. The measurement uses data recorded by the CMS experiment at the LHC during 2016–2018 at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 138 fb; ; −; 1; ; . The analysis is performed in a region enriched in photon production via vector boson fusion, with a requirement on the transverse momentum of the photon to exceed 200 GeV. The cross section is measured to be; ; ; $$ {202}_{-32}^{+36} $$; ; ; 202; ; −; 32; ; ; +; 36; ; ; ; ; ; fb, at a significance with respect to the null hypothesis that exceeds five standard deviations. This is in agreement with the standard model prediction of; ; ; $$ {177}_{-12}^{+13} $$; ; ; 177; ; −; 12; ; ; +; 13; ; ; ; ; ; fb. Differential cross sections are measured as a function of various observables. Limits are set on dimension-6 effective field theory operators that contribute to the WWγ interaction. The observed 95% confidence intervals for the corresponding Warsaw basis Wilson coefficients; c; W; and; c; HWB; are [; −; 0; .; 11; ,; 0; .; 16] and [; −; 1; .; 6; ,; 1; .; 5], respectively.;

Hayrapetyan A; Makarenko V; Tumasyan A; Adam W; Andrejkovic JW; Benato L; Bergauer T; Dragicevic M; Giordano C; Hussain PS

VIVO