Search for W boson decays to three charged pions
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 exc...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English English |
| Published: |
American Physical Society
2019
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/79791/1/79791_Search%20for%20W%20Boson%20Decays.pdf http://irep.iium.edu.my/79791/2/79791_Search%20for%20W%20Boson%20Decays_SCOPUS.pdf http://irep.iium.edu.my/79791/3/79791_Search%20for%20W%20Boson%20Decays_WOS.pdf http://irep.iium.edu.my/79791/ https://journals.aps.org/prl/pdf/10.1103/PhysRevLett.122.151802 |
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| Summary: | 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. |
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