Discovering the twin Higgs boson with displaced decays

Kilic, Can; Najjari, Saereh; Verhaaren, Christopher B.

doi:10.1103/PhysRevD.99.075029

Title: Discovering the twin Higgs boson with displaced decays

Journal Article · Mon Apr 29 00:00:00 EDT 2019 · Physical Review D

DOI:https://doi.org/10.1103/PhysRevD.99.075029· OSTI ID:1509761

Kilic, Can; Najjari, Saereh; Verhaaren, Christopher B.

The twin Higgs mechanism keeps the scalar sector of the Standard Model (SM) natural while remaining consistent with the nonobservation of new colored particles at the Large Hadron Collider (LHC). In this construction the heavy twin Higgs boson provides a portal between the SM particles and the twin sector, but is quite challenging to discover at colliders. In the fraternal twin Higgs setup, where light twin quarks are absent, we study a novel discovery channel for the heavy twin Higgs boson by considering its decay to a pair of light Higgs bosons, one of which subsequently decays to glueball states in the twin sector, leading to displaced vertex signatures. We estimate the sensitivity of existing LHC searches in this channel, and assess the discovery potential of the high luminosity (HL) LHC. We show that the glueballs probed by these searches are outside the sensitivity of existing searches for exotic decays of the light Higgs boson. In addition, we demonstrate that the displaced signals we consider probe a region of heavy Higgs masses beyond the reach of prompt signals. We also comment on the possibility of probing the input parameters of the microscopic physics and providing a way to test the twin Higgs mechanism with this channel.

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Research Organization:: Univ. of California, Davis, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC); National Science Foundation (NSF)

Grant/Contract Number:: SC-000999; SC0009999; PHY-1620610

OSTI ID:: 1509761

Alternate ID(s):: OSTI ID: 1611316

Journal Information:: Physical Review D, Journal Name: Physical Review D Vol. 99 Journal Issue: 7; ISSN 2470-0010

Publisher:: American Physical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 18 works

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