Northwestern Events Calendar

May
16
2016

Wei-Chih Huang: Gauged Two Higgs Doublet Model and The LHC 750 GeV Diphoton Anomaly

When: Monday, May 16, 2016
4:00 PM - 5:00 PM CT

Where: Technological Institute, F160, 2145 Sheridan Road, Evanston, IL 60208 map it

Audience: Faculty/Staff - Student - Public - Post Docs/Docs - Graduate Students

Contact: Pamela Villalovoz   (847) 491-3666

Group: Physics and Astronomy High Energy Physics Seminars

Category: Academic

Description:

Title: Gauged Two Higgs Doublet Model and The LHC 750 GeV Diphoton Anomaly

 

Speaker: Wei-Chih Huang, Dortmund
 

Abstract:

A novel model embedding the two Higgs doublets in the popular two Higgs doublet models into a doublet of a non-abelian gauge group $SU(2)_H$ is presented. The Standard Model $SU(2)_L$ right-handed fermion singlets are paired up with new heavy fermions to form $SU(2)_H$ doublets, while $SU(2)_L$ left-handed fermion doublets are singlets under $SU(2)_H$. Two of distinctive features of this anomaly-free model are: (1) Electroweak symmetry breaking is induced from spontaneous symmetry breaking of $SU(2)_H$ via its triplet vacuum expectation value; (2) One of the Higgs doublet can be inert, with its neutral component being a dark matter candidate as protected by the $SU(2)_H$ gauge symmetry and Lorentz invariance instead of an ad hoc $Z_2$ symmetry.

I will discuss the model implications on collider constraints, Higgs physics, bounds from the electroweak precision data and dark matter relic density. In addition, this model can account for the LHC 750 GeV diphoton anomaly with the help of the heavy fermions and an $SU(2)_H$ scalar doublet.

Keywords: Physics, Astronomy, HEP

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