Observation of electroweak production of Wγ with two jets in proton-proton collisions at √s=13 TeV
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1-s2.0-S0370269320307917-main.pdf
Description
Published version
Size
1.12 MB
Format
Adobe PDF
Checksum (MD5)
f7b9fb85bc4263bc637a31a299292c2c
Author(s)
Harris, Philip
Date Issued
2020
Journal
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Publisher
Elsevier BV
Citation
Harris, Philip. 2020. "Observation of electroweak production of Wγ with two jets in proton-proton collisions at √s=13 TeV." Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 811.
Version
Final published version
Abstract
© 2020 The Author(s) 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.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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Creative Commons Attribution 4.0 International license
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DOI of Published Version
https://doi.org/10.1016/J.PHYSLETB.2020.135988
