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Reconstruction et identification de jets beaux dans l'expérience LHCb en vue d'étudier sa sensibilité à un boson de Higgs standard se désintégrant en paires bb{bar}

Abstract : LHCb sensitivity to a standard model Higgs in the H+(WZ)bb+(llll) channel has been studied. Different effects affecting jet reconstruction have been studied at generator and full si- mulation of the detector level. After correction di-b-jet, mass resolution is sigma/mean = 22%. b-jet identification procedure has been set up, selecting ~80% of b-jets while rejecting ~99.5% of other jets. After reducing the bbbar + l physical background, a statistical significance of 1 is obtained for 4 years of data taking at a luminosity of 5.10^{32}cm^{-2s}^{-1}.
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https://tel.archives-ouvertes.fr/tel-00484638
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Submitted on : Tuesday, May 18, 2010 - 5:03:08 PM
Last modification on : Wednesday, July 22, 2020 - 9:54:18 AM
Long-term archiving on: : Thursday, September 16, 2010 - 2:56:11 PM

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V. Coco. Reconstruction et identification de jets beaux dans l'expérience LHCb en vue d'étudier sa sensibilité à un boson de Higgs standard se désintégrant en paires bb{bar}. Physique des Hautes Energies - Expérience [hep-ex]. Université de Savoie, 2008. Français. ⟨tel-00484638⟩

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