Search for Neutral Minimally Supersymmetric Standard Model Higgs Decaying to Two Hadronic Taus with the ATLAS Detector in pp collisions at 7 TeV Center of Mass Energy

• Main Author: Dhaliwal, Saminder K.
• Other Authors: Orr, Robert S.
• Language: en_ca
• Published: 2013
• Subjects: MSSM Higgs; hadronic tau; 0798
• Online Access: http://hdl.handle.net/1807/35175

This thesis presents the first search for a neutral Minimal Supersymmetric Standard Model Higgs boson decaying to a pair of hadronic taus in proton-proton collisions with a center-of-mass energy of √s = 7 TeV. Results are presented for an integrated lumi- nosity of 1.056 fb−1 using data from the ATLAS detector at the Large Hadron Collider. After signal selection, 245 events are observed. The number of events is consistent the background estimate of 256 ± 26. An exclusion limit for the Higgs boson production is derived as a function of (cross-section)×(branching ratio). This limit is presented as a function of two parameters: mA and tanβ in the mmax scenario. A point in the (mA, h tanβ) phase space is excluded if the signal hypothesis is rejected at the 95% confidence level.