We present a measurement of the ratio of top quark branching fractions R ¼ Bðt ! WbÞ=Bðt ! WqÞ, w... more We present a measurement of the ratio of top quark branching fractions R ¼ Bðt ! WbÞ=Bðt ! WqÞ, where q can be a d, s, or b quark, in the lepton þ jets and dilepton t t final states. The measurement uses data from 5:4 fb À1 of p p collisions collected with the D0 detector at the Fermilab Tevatron Collider. We measure R ¼ 0:90 AE 0:04, and we extract the Cabibbo-Kobayashi-Maskawa (CKM) matrix element jV tb j as jV tb j ¼ 0:95 AE 0:02, assuming unitarity of the 3 Â 3 CKM matrix.
We present a search for associated Higgs boson production in the process p " p ! W=ZH ! ' AE ' 0A... more We present a search for associated Higgs boson production in the process p " p ! W=ZH ! ' AE ' 0AE þ X in ee, e, and final states. The search is based on data collected by the D0 experiment at the Fermilab Tevatron Collider at ffiffi ffi s p ¼ 1:96 TeV corresponding to 5:3 fb À1 of integrated luminosity. We require two isolated leptons (electrons or muons) with the same electric charge and additional kinematic requirements. No significant excess above background is observed, and we set 95% C.L. observed (expected) upper limits on ratio of the production cross section to the standard model prediction of 6.4 (7.3) for a Higgs boson mass of 165 GeV and 13.5 (19.8) for a mass of 115 GeV.
We present a measurement of the ratio of top quark branching fractions R ¼ Bðt ! WbÞ=Bðt ! WqÞ, w... more We present a measurement of the ratio of top quark branching fractions R ¼ Bðt ! WbÞ=Bðt ! WqÞ, where q can be a d, s, or b quark, in the lepton þ jets and dilepton t t final states. The measurement uses data from 5:4 fb À1 of p p collisions collected with the D0 detector at the Fermilab Tevatron Collider. We measure R ¼ 0:90 AE 0:04, and we extract the Cabibbo-Kobayashi-Maskawa (CKM) matrix element jV tb j as jV tb j ¼ 0:95 AE 0:02, assuming unitarity of the 3 Â 3 CKM matrix.
We present a search for associated Higgs boson production in the process p " p ! W=ZH ! ' AE ' 0A... more We present a search for associated Higgs boson production in the process p " p ! W=ZH ! ' AE ' 0AE þ X in ee, e, and final states. The search is based on data collected by the D0 experiment at the Fermilab Tevatron Collider at ffiffi ffi s p ¼ 1:96 TeV corresponding to 5:3 fb À1 of integrated luminosity. We require two isolated leptons (electrons or muons) with the same electric charge and additional kinematic requirements. No significant excess above background is observed, and we set 95% C.L. observed (expected) upper limits on ratio of the production cross section to the standard model prediction of 6.4 (7.3) for a Higgs boson mass of 165 GeV and 13.5 (19.8) for a mass of 115 GeV.
Uploads
Papers by Ashley Luna