Lepton flavor violating decay of 125 GeV Higgs boson to mu tau channel and excess in t(t)over-barH

Bhattacherjee, Biplob and Chakraborty, Sabyasachi and Mukherjee, Swagata (2016) Lepton flavor violating decay of 125 GeV Higgs boson to mu tau channel and excess in t(t)over-barH. In: MODERN PHYSICS LETTERS A, 31 (30).

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Abstract

A recent search for the lepton flavor violating (LFV) decays of the Higgs boson, performed by CMS collaboration, reports an interesting deviation from the Standard Model (SM). The search conducted in the channel H -> mu tau(e) and H -> mu tau(had) shows an excess of 2.4 sigma signal events with 19.6 fb(-1) data at a center-of-mass energy root s = 8 TeV. On the other hand, a search performed by CMS collaboration for the SM Higgs boson produced in association with a top quark pair (t (t) over barH) also showed an excess in the same-sign dimuon final state. In this work, we try to find out if these two seemingly uncorrelated excesses are related or not. Our analysis reveals that a LFV Higgs decay (H -> mu tau) can partially explain the excess in the same-sign dimuon final state in the t (t) over barH search, infact brings down the excess well within 2 sigma error of the SM expectation. Probing such non-standard Higgs boson decay is of interest and might contain hints of new physics at the electroweak scale.

Item Type:	Journal Article
Publication:	MODERN PHYSICS LETTERS A
Additional Information:	Copy right for this article belongs to the WORLD SCIENTIFIC PUBL CO PTE LTD, 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE
Department/Centre:	Division of Physical & Mathematical Sciences > Centre for High Energy Physics
Date Deposited:	28 Oct 2016 07:09
Last Modified:	28 Oct 2016 07:09
URI:	http://eprints.iisc.ac.in/id/eprint/55139

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