Higgs boson physics and broken flavor symmetry – LHC phenomenology

Journal Article · Fri Apr 01 00:00:00 EDT 2016 · Nuclear and Particle Physics Proceedings

DOI:https://doi.org/10.1016/j.nuclphysbps.2015.09.121· OSTI ID:1602007

Berger, Edmond L. ^[1]; Zhang, Hao ^[2]

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1. Argonne National Lab. (ANL), Argonne, IL (United States). High Energy Physics Division
2. Univ. of California, Santa Barbara, CA (United States). Dept. of Physics

The LHC implications are presented of a simplified model of broken flavor symmetry in which a new scalar (a flavon) emerges with mass in the TeV range. We summarize the influence of the model on Higgs boson physics, notably on the production cross section and decay branching fractions. Limits are obtained on the flavon φ from heavy Higgs boson searches at the LHC at 7 and 8 TeV. The branching fractions of the flavon are computed as a function of the flavon mass and the Higgs-flavon mixing angle. We explore possible discovery of the flavon at 14 TeV, particularly via the φ→Z⁰Z⁰ decay channel in the 2ℓ2ℓ' final state, and through standard model Higgs boson pair production φ→hh in the $$b\bar{b}$$γγ final state. The flavon mass range up to 500 GeV could probed down to quite small values of the Higgs-flavon mixing angle with 100 fb^-1 of integrated luminosity at 14 TeV.

• Research Organization: Univ. of California, Santa Barbara, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP)
• Grant/Contract Number: SC0011702
• OSTI ID: 1602007
• Journal Information: Nuclear and Particle Physics Proceedings, Vol. 273-275, Issue C; Conference: 37. Conference on High Energy Physics , Valencia (Spain), 2 - 9 Jul 20141; ISSN 2405-6014
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Higgs boson
broken flavor symmetry
flavon
Higgs-flavon mixing
LHC phenomenology