Speaker
Dr
Chen Zhou
(University of Wisconsin-Madison)
Description
A search for new physics phenomena is presented using events with missing transverse momentum and a Standard Model Higgs boson decaying into two photons. This search is based on 13 TeV proton-proton collision data collected by the ATLAS detector at the LHC in 2015 and 2016, corresponding to an integrated luminosity of 36.1 $fb^{−1}$. No significant excess over the Standard Model expectation is observed. Upper limits at 95% confidence level on the production cross section times the branch ratio of the Higgs boson decaying into two photons are set for two Dark Matter models and a heavy scalar boson model. Additionally, the results are interpreted in terms of 90% confidence level limits on the dark matter-nucleon scattering cross section, as well as 95% confidence level limits on visible cross section.
Primary author
Dr
Chen Zhou
(University of Wisconsin-Madison)