Measurement of the inclusive prompt photon cross section and preparation of the search of the Higgs boson decaying into two photons with the ATLAS detector at the LHC
Year: 2011
Type: article
Abstract: This thesis presents the measurements with the ATLAS experiment of the cross section for inclusive production of isolated prompt photons in proton-proton collisions at a centre-of-mass energy sqrt(s) = 7 TeV. The first results are based on an integrated luminosity of 880 nb−1 and the later results are based on 36 pb−1 , collected with the ATLAS detector at the Large Hadron Collider. The measurements performed with 880 nb−1 and 36 pb−1 cover the transverse energy range 15 ≤ ET < 100 GeV and 45 ≤ ET < 400 GeV, respectively. The results are compared to predictions from next-to-leading order perturbative QCD calculations. In addition, are also presented the first studies for the search for the Higgs boson in the decay channel into two photons with 38 pb−1 data collected by the ATLAS experiment in 2010 (and more recently with 210 pb−1 collected in 2011). Observed exclusion limits are quoted as a function of the Higgs mass in the range 110-140 GeV.
Author: Abreu, Henso
Institution: Laboratoire de l'Accélérateur Linéaire
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2164492059