Search for an exotic decay of the Higgs boson to a pair of light pseudoscalars in the final state with two bquarks and two tau leptons in proton-proton collisions at root s=13 TeV The CMS Collaboration

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OA Location

https://www.sciencedirect.com/science/article/pii/S0370269318306725?via%3Dihub

Author(s)

Sirunyan, AM

Tumasyan, A

Adam, W

Ambrogi, F

Asilar, E

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Type

Journal Article

Abstract

A search for an exotic decay of the Higgs boson to a pair of light pseudoscalar bosons is performed for the first time in the final state with two b quarks and two τ leptons. The search is motivated in the context of models of physics beyond the standard model (SM), such as two Higgs doublet models extended with a complex scalar singlet (2HDM + S), which include the next-to-minimal supersymmetric SM (NMSSM). The results are based on a data set of proton–proton collisions corresponding to an integrated luminosity of , accumulated by the CMS experiment at the LHC in 2016 at a center-of-mass energy of . Masses of the pseudoscalar boson between 15 and are probed, and no excess of events above the SM expectation is observed. Upper limits between 3 and 12% are set on the branching fraction assuming the SM production of the Higgs boson. Upper limits are also set on the branching fraction of the Higgs boson to two light pseudoscalar bosons in different 2HDM + S scenarios. Assuming the SM production cross section for the Higgs boson, the upper limit on this quantity is as low as 20% for a mass of the pseudoscalar of in the NMSSM.

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Date Issued

2018-10-10

Date Acceptance

2018-08-07

Citation

PHYSICS LETTERS B, 2018, 785, pp.462-488

URI

http://hdl.handle.net/10044/1/64567

DOI

10.1016/j.physletb.2018.08.057

ISSN

0370-2693

Publisher

ELSEVIER SCIENCE BV

Start Page

462

End Page

488

Journal / Book Title

PHYSICS LETTERS B

Volume

785

Copyright Statement

©
2018 The Author(s). Published by Elsevier B.V. This is
an open access article
under the CC BY license
(http://creativecommons.org/licenses/by/4.0/).

Identifier

http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000447424000067&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202

Subjects

Science & Technology

Physical Sciences

Astronomy & Astrophysics

Physics, Nuclear

Physics, Particles & Fields

Physics

CMS

Higgs boson

Exotic decays

NMSSM

2HDM+S

STANDARD MODEL

MASSLESS PARTICLES

BROKEN SYMMETRIES

HADRON COLLIDERS

BREAKING

LHC

Publication Status

Published

Date Publish Online

2018-08-31