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

Journal articles  - Journal Article
Sirunyan, AM; Tumasyan, A; Adam, W; Ambrogi, F; Bergauer, T; Dragicevic, M; Erö, J; Escalante Del Valle, A; Frühwirth, R; Jeitler, M; Liko, D ...
Published in: Physics Letters Section B Nuclear Elementary Particle and High Energy Physics
December 10, 2020

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.

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Published In

Physics Letters Section B Nuclear Elementary Particle and High Energy Physics

DOI

ISSN

0370-2693

Publication Date

December 10, 2020

Volume

811

Related Subject Headings

  • Nuclear & Particles Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
 

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Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Dragicevic, M., … Zobec, J. (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. https://doi.org/10.1016/j.physletb.2020.135988
Sirunyan, A. M., A. Tumasyan, W. Adam, F. Ambrogi, T. Bergauer, M. Dragicevic, J. Erö, et al. “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 (December 10, 2020). https://doi.org/10.1016/j.physletb.2020.135988.
Sirunyan AM, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Dragicevic M, et al. 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. 2020 Dec 10;811.
Sirunyan, A. M., et al. “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, vol. 811, Dec. 2020. Scopus, doi:10.1016/j.physletb.2020.135988.
Sirunyan AM, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Dragicevic M, Erö J, Escalante Del Valle A, Frühwirth R, Jeitler M, Krammer N, Lechner L, Liko D, Madlener T, Mikulec I, Pitters FM, Rad N, Schieck J, Schöfbeck R, Spanring M, Templ S, Waltenberger W, Wulz CE, Zarucki M, Chekhovsky V, Litomin A, Makarenko V, Suarez Gonzalez J, Darwish MR, De Wolf EA, Di Croce D, Janssen X, Kello T, Lelek A, Pieters M, Rejeb Sfar H, Van Haevermaet H, Van Mechelen P, Van Putte S, Van Remortel N, Blekman F, Bols ES, Chhibra SS, D’Hondt J, De Clercq J, Lontkovskyi D, Lowette S, Marchesini I, Moortgat S, Morton A, Python Q, Tavernier S, Van Doninck W, Van Mulders P, Beghin D, Bilin B, Clerbaux B, De Lentdecker G, Delannoy H, Dorney B, Favart L, Grebenyuk A, Kalsi AK, Makarenko I, Moureaux L, Pétré L, Popov A, Postiau N, Starling E, Thomas L, Vander Velde C, Vanlaer P, Vannerom D, Wezenbeek L, Cornelis T, Dobur D, Khvastunov I, Niedziela M, Roskas C, Skovpen K, Tytgat M, Verbeke W, Vermassen B, Vit M, Bruno G, Bury F, Caputo C, David P, Delaere C, Delcourt M, Donertas IS, Giammanco A, Lemaitre V, Mondal K, Prisciandaro J, Taliercio A, Teklishyn M, Vischia P, Wuyckens S, Zobec J. 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. 2020 Dec 10;811.
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Published In

Physics Letters Section B Nuclear Elementary Particle and High Energy Physics

DOI

ISSN

0370-2693

Publication Date

December 10, 2020

Volume

811

Related Subject Headings

  • Nuclear & Particles Physics
  • 51 Physical sciences
  • 49 Mathematical sciences