Search for lepton flavour violating decays of the higgs boson to μτ and eτ in proton-proton collisions at √s=13 TeV

Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Ambrogi, Federico and Asilar, Ece and Md. Ali, Mohd. Adli (2018) Search for lepton flavour violating decays of the higgs boson to μτ and eτ in proton-proton collisions at √s=13 TeV. Journal of High Energy Physics, 2018 (6). pp. 1-53. E-ISSN 1029-8479

	PDF (The CMS Collaboration) - Published Version Restricted to Repository staff only Download (1MB) | Request a copy
	PDF (scopus) - Supplemental Material Restricted to Repository staff only Download (706kB) | Request a copy
Preview	PDF Download (366kB) | Preview

Abstract

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.

Item Type:	Article (Journal)
Additional Information:	7861/66014
Uncontrolled Keywords:	Beyond Standard Model, Flavor physics, Hadron-Hadron scattering (experiments)
Subjects:	Q Science > Q Science (General) Q Science > QC Physics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science Kulliyyah of Science > Department of Physics
Depositing User:	Dr Mohd Adli MD Ali
Date Deposited:	30 Aug 2018 12:06
Last Modified:	24 Jan 2019 15:57
URI:	http://irep.iium.edu.my/id/eprint/66014

Actions (login required)

View Item