Search for lepton flavour violating decays of the higgs boson to μτ and eτ in proton-proton collisions at √s=13 TeV
A search for lepton flavour violating decays of the Higgs boson in the µτ and eτ decay modes is presented. The search is based on a data set corresponding to an integrated luminosity of 35.9 fb−1 of proton-proton collisions collected with the CMS detector in 2016, at a centre-of-mass energy of 1...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English English |
| Published: |
Springer Nature
2018
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/66014/ http://irep.iium.edu.my/66014/ http://irep.iium.edu.my/66014/ http://irep.iium.edu.my/66014/1/66014_Search%20for%20lepton%20flavour%20violating%20decays_article.pdf http://irep.iium.edu.my/66014/2/66014_Search%20for%20lepton%20flavour%20violating%20decays_scopus.pdf http://irep.iium.edu.my/66014/13/66014%20Search%20for%20lepton%20flavour%20violating%20decays%20of%20the%20Higgs%20boson%20to%20%CE%BC%CF%84%20and%20e%CF%84%20in%20proton-proton%20collisions%20at%20%E2%88%9As%3D13%20TeV_wos.pdf |
| Summary: | A search for lepton flavour violating decays of the Higgs boson in the µτ
and eτ decay modes is presented. The search is based on a data set corresponding to
an integrated luminosity of 35.9 fb−1
of proton-proton collisions collected with the CMS
detector in 2016, at a centre-of-mass energy of 13 TeV. No significant excess over the standard
model expectation is observed. The observed (expected) upper limits on the lepton
flavour violating branching fractions of the Higgs boson are B(H → µτ ) < 0.25% (0.25%)
and B(H → eτ ) < 0.61% (0.37%), at 95% confidence level. These results are used to derive
upper limits on the off-diagonal µτ and eτ Yukawa couplings √
|Yµτ |
2 + |Yτµ|
2 < 1.43×10−3
and p
|Yeτ |
2 + |Yτe|
2 < 2.26×10−3 at 95% confidence level. The limits on the lepton flavour
violating branching fractions of the Higgs boson and on the associated Yukawa couplings
are the most stringent to date. |
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