Search for <i>W</i> Boson Decays to Three Charged Pions



Sirunyan, AM, Tumasyan, A, Adam, W, Ambrogi, F, Asilar, E, Bergauer, T, Brandstetter, J, Dragicevic, M, Eroe, J, Del Valle, A Escalante
et al (show 2264 more authors) (2019) Search for <i>W</i> Boson Decays to Three Charged Pions. PHYSICAL REVIEW LETTERS, 122 (15). 151802-.

Access the full-text of this item by clicking on the Open Access link.
[img] Text
PhysRevLett.122.151802.pdf - Published version

Download (610kB) | Preview

Abstract

For the first time, a search for the rare decay of the W boson to three charged pions has been performed. Proton-proton collision data recorded by the CMS experiment at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 77.3  fb^{-1}, have been analyzed. No significant excess is observed above the background expectation. An upper limit of 1.01×10^{-6} is set at 95% confidence level on the branching fraction of the W boson to three charged pions. This provides a strong motivation for theoretical calculations of this branching fraction.

Item Type: Article
Uncontrolled Keywords: CMS Collaboration
Depositing User: Symplectic Admin
Date Deposited: 15 Aug 2019 09:58
Last Modified: 13 Oct 2023 19:09
DOI: 10.1103/PhysRevLett.122.151802
Open Access URL: http://doi.org/10.1103/PhysRevLett.122.151802
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3051822