Search for W boson decays to three charged pions
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Type :
Article
Publication Status :
Published
Access :
openAccess
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 x 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.
Source :
Physical Review Letters
Date :
2019-04-18
Volume :
122
Issue :
15
Publisher :
American Physical Society
URI
http://hdl.handle.net/10679/6898https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.122.151802
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