CERN Accélérateur de science

Theses
Title	Search for Higgs boson decays to neutralinos and gravitinos using the ATLAS detector
Author(s)	Karthik, Krishnaiyengar (New York U.)
Publication	188.
Thesis note	PhD : New York U. : 2014
Thesis supervisor(s)	Haas, Andrew
Subject category	Particle Physics - Experiment
Accelerator/Facility, Experiment	CERN LHC ; ATLAS
Abstract	This thesis describes the search for exotic Higgs boson decays to neutralinos and gravitinos as predicted by some Supersymmetric extensions of the Standard Model. The analysis is done using 20.3 fb-1 of √ s = 8 TeV proton-proton collision data recorded by the ATLAS detector at the Large Hadron Collider. The analysis searches for decays of the Higgs boson produced along with two forward jets, as enhanced by vector boson fusion Higgs boson production, leading to a final state of at least one photon, missing transverse momentum, and two forward jets. The study finds no statistically significant deviation from the Standard Model prediction and places 95% confidence-level upper limits on the branching fraction of the Higgs boson to neutralinos and gravitinos as a function of neutralino masses.

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