Measurements of production cross sections of polarized same-sign W boson pairs in association with two jets in proton-proton collisions at $\sqrt{s} =$ 13 TeV

Bruno, Giacomo;Bury, Florian;Caputo, Claudio;David, Pieter;CMS;et.al.
(2021) Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics — Vol. 812 (2021)

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Authors
  • Bruno, GiacomoUCLouvain
    Author
  • Bury, FlorianUCLouvain
    Author
  • Caputo, ClaudioUCLouvain
    Author
  • David, PieterUCLouvain
    Author
  • Delaere, Christopheorcid-logoUCLouvain
    Author
  • Delcourt, MartinUCLouvain
    Author
  • Donertas, Izzeddin SuatUCLouvain
    Author
  • Giammanco, AndreaUCLouvain
    Author
  • Lemaitre, VincentUCLouvain
    Author
  • Mondal, KuntalUCLouvain
    Author
  • Prisciandaro, JessicaUCLouvain
    Author
  • Taliercio, AngelaUCLouvain
    Author
  • Teklishyn, MaksymUCLouvain
    Author
  • Vischia, PietroUCLouvain
    Author
  • Wertz, SébastienUCLouvain
    Author
  • Wuyckens, SophieUCLouvain
    Author
  • CMS
    Author
  • et. al.
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Abstract
The first measurements of production cross sections of polarized same-sign W±W± boson pairs in proton-proton collisions are reported. The measurements are based on a data sample collected with the CMS detector at the LHC at a center-of-mass energy of 13TeV , corresponding to an integrated luminosity of 137fb−1 . Events are selected by requiring exactly two same-sign leptons, electrons or muons, moderate missing transverse momentum, and two jets with a large rapidity separation and a large dijet mass to enhance the contribution of same-sign W±W± scattering events. An observed (expected) 95% confidence level upper limit of 1.17 (0.88) fbis set on the production cross section for longitudinally polarized same-sign W±W± boson pairs. The electroweak production of same-sign W±W± boson pairs with at least one of the W bosons longitudinally polarized is measured with an observed (expected) significance of 2.3 (3.1) standard deviations.
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Bruno, G., Bury, F., Caputo, C., David, P., Delaere, C., Delcourt, M., Donertas, I. S., Giammanco, A., Lemaitre, V., Mondal, K., Prisciandaro, J., Taliercio, A., Teklishyn, M., Vischia, P., Wertz, S., Wuyckens, S., CMS, & et al. (2021). Measurements of production cross sections of polarized same-sign W boson pairs in association with two jets in proton-proton collisions at $\sqrt{s} =$ 13 TeV. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 812. https://doi.org/10.1016/j.physletb.2020.136018 (Original work published 2021)