Search for the Standard Model Higgs boson in the diphoton final state in proton-antiproton collisions at a center of mass energy of 1.96 TeV using the CDF II detector.

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dc.contributor.advisorDittmann, Jay R.
dc.contributor.authorBland, Karen Renee.
dc.contributor.departmentPhysics.en_US
dc.contributor.otherThe Collider Detector at Fermilab (CDF) collaboration.en_US
dc.contributor.schoolsBaylor University. Dept. of Physics.en_US
dc.date.accessioned2012-11-29T16:17:01Z
dc.date.available2012-11-29T16:17:01Z
dc.date.copyright2012-08
dc.date.issued2012-11-29
dc.description.abstractWe present a search for the Standard Model Higgs boson decaying into a pair of photons produced in pp ̄ collisions with a center of mass energy of 1.96 TeV. The results are based on data corresponding to an integrated luminosity of 10 fb−1 collected by the CDF II detector. Higgs boson candidate events are identified by reconstructing two photons in either the central or plug regions of the detector. The acceptance for identifying photons is significantly increased by using a new algorithm designed to reconstruct photons in the central region that have converted to an electron-positron pair. In addition, a new neural network discriminant is employed to improve the identification of non-converting central photons. No evidence for the Higgs boson is observed in the data, and we set an upper limit on the cross section for Higgs boson production multiplied by the H→γγ branching ratio. For a Higgs boson mass of 125 GeV/c2, we obtain an observed (expected) limit of 12.2 (10.8) times the Standard Model prediction at the 95% credibility level.en_US
dc.description.degreePh.D.en_US
dc.identifier.urihttp://hdl.handle.net/2104/8510
dc.language.isoen_USen_US
dc.publisheren
dc.rightsBaylor University theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. Contact librarywebmaster@baylor.edu for inquiries about permission.en_US
dc.rights.accessrightsWorldwide accessen_US
dc.subjectHiggs boson search.en_US
dc.subjectDiphoton final state.en_US
dc.subjectCDF detector.en_US
dc.subjectStandard model.en_US
dc.titleSearch for the Standard Model Higgs boson in the diphoton final state in proton-antiproton collisions at a center of mass energy of 1.96 TeV using the CDF II detector.en_US
dc.typeThesisen_US

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