10-16 June 2018
Dalhousie University
America/Halifax timezone
Welcome to the 2018 CAP Congress Program website! / Bienvenue au siteweb du programme du Congrès de l'ACP 2018!

Search for new dark sector particles in Higgs boson decays with the ATLAS detector at the LHC (G)*

12 Jun 2018, 13:45
Dunn 135 (cap.82) (Dalhousie University)

Dunn 135 (cap.82)

Dalhousie University

Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle) Particle Physics / Physique des particules (PPD) T3-3 Particle Physics IV (PPD) | Physique des particules IV (PPD)


Yu Him Justin Chiu (University of Victoria (CA))


The recent discovery of the Higgs boson (h) is an affirmation of the
Standard Model (SM) of particle physics and concludes several decades of
experimental searches. However, the experimental investigation of its
properties has just begun. Current measurements of h properties permit
the fraction of h decays to Beyond-Standard-Model (BSM) particles to be
as high as approximately 30%. These exotic decays are also
well-motivated theoretically. Of particular interest is the decay of h
to two dark sector particles each called Zd. This decay occurs in models
where h interacts with a dark sector which could have a rich and
interesting phenomenology like the SM. A dark sector could naturally
address many of the questions left unanswered by the SM. The higher rate
of h production resulting from the increased proton beam intensity and
energy of the Large Hadron Collider (LHC) in the 2015-2018 data-taking
run – combined with strong theoretical motivation and tantalizing hints
seen in past searches – makes this decay a promising avenue for the
discovery of new physics. I will present current results of this search, and prospects for the full 2015-2018 dataset.

Primary author

Yu Him Justin Chiu (University of Victoria (CA))

Presentation Materials