Search for Doubly-charged Higgs Boson Production in the Decay H++ H-- {u2192} ?+?+?-?- with the D0 Detector at {u221A}s
Search for Doubly-charged Higgs Boson Production in the Decay H++ H-- {u2192} ?+?+?-?- with the D0 Detector at {u221A}s

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Published: 2004

Total Pages: 424

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This work presents a search for the pair production of doubly-charged Higgs Bosons in the process p$ar{p}$ → H++H-- → ?+?+?-?- using inclusive dimuon events. These data correspond to an integrated luminosity of about 113 pb 1 and were recorded by the D0 experiment between August 2002 and June 2003. In the absence of a signal, 95% confidence level mass limits of M(H$±±top{L}$) > 118.6 GeV/c2 and M(HR±±) > 98.1 GeV/c2 are set for left-handed and right-handed doubly-charged Higgs boson, assuming 100% branching into muons and hypercharge.

Search for Doubly-charged Higgs Boson Production in the Decay H++ H--{u2192} ?+?+?-?- with 1.1 Fb-1 at D0 Detector
Search for Doubly-charged Higgs Boson Production in the Decay H++ H--{u2192} ?+?+?-?- with 1.1 Fb-1 at D0 Detector

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Published: 2007

Total Pages: 199

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This work presents a search for the pair production of doubly-charged Higgs bosons in the process p{bar p} → H++H-- → ?+?+?-?- using the data corresponding to an integrated luminosity of about 1.1 fb-1. This is the complete dataset of RunIIa taken from April 19, 2002 to February 22, 2006 by the D0 experiment at the Fermilab Tevatron Collider. In the absence of significant excess above standard model background, 95% confidence level mass limits of M(H$±±top{L}$) > 150 GeV and M(H$±±top{R}$) > 126.5 GeV are set for left-handed and right-handed doubly-charged Higgs bosons respectively assuming a 100% branching ratio into muons.

Search for Doubly-charged Higgs Boson Production in the Decay H++ H--2![mu]+[mu]+[mu]-[mu]- with 1.1 Fb-1 at D0 Detector
Search for Doubly-charged Higgs Boson Production in the Decay H++ H--2![mu]+[mu]+[mu]-[mu]- with 1.1 Fb-1 at D0 Detector

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Published: 2007

Total Pages: 199

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This work presents a search for the pair production of doubly-charged Higgs bosons in the process p{bar p} 2!H++H-- 2![mu]+[mu]+[mu]-[mu]- using the data corresponding to an integrated luminosity of about 1.1 fb-1. This is the complete dataset of RunIIa taken from April 19, 2002 to February 22, 2006 by the D0 experiment at the Fermilab Tevatron Collider. In the absence of significant excess above standard model background, 95% confidence level mass limits of M(H$±±\atop{L}$)> 150 GeV and M(H$±±\atop{R}$)> 126.5 GeV are set for left-handed and right-handed doubly-charged Higgs bosons respectively assuming a 100% branching ratio into muons.

Search for a Charged Higgs Boson Produced in the Vector-boson Fusion Mode with Decay H± {u2192} W±Z Using pp Collisions at {u221A}s
Search for a Charged Higgs Boson Produced in the Vector-boson Fusion Mode with Decay H± {u2192} W±Z Using pp Collisions at {u221A}s

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Published: 2015

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A search for a charged Higgs boson, H±, decaying to a W± boson and a Z boson is presented. The search is based on 20.3 fb–1 of proton-proton collision data at a center-of-mass energy of 8 TeV recorded with the ATLAS detector at the LHC. The H± boson is assumed to be produced via vector-boson fusion and the decays W± → qq¯' and Z → e+e–/?+?– are considered. The search is performed in a range of charged Higgs boson masses from 200 to 1000 GeV. No evidence for the production of an H± boson is observed. Upper limits of 31–1020 fb at 95% C.L. are placed on the cross section for vector-boson fusion production of an H± boson times its branching fraction to W±Z. The limits are compared with predictions from the Georgi-Machacek Higgs triplet model.

Search for Associated Higgs Boson Production Using Like Charge Dilepton Events in P P Collisions at {u221A}s
Search for Associated Higgs Boson Production Using Like Charge Dilepton Events in P P Collisions at {u221A}s

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Published: 2011

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We present a search for associated Higgs boson production in the process pp→ W/ZH → ell± ell± + X in ee, e?, and ?? final states. The search is based on data collected by the D0 experiment at the Fermilab Tevatron Collider at √s = 1.96 TeV corresponding to 5.3 fb-1 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 sectin to the standard model expectation of 6.4 (7.3) for a Higgs boson mass of 165 GeV and 13.5 (19.8) for a mass of 115 GeV.