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Tevatron constraints on models of the Higgs boson with exotic spin and parity using decays to bottom-antibottom quark pairs

AutorAaltonen, T.; Casal, Bruno ; Cuevas, Javier ; Gómez, G. ; Palencia, Enrique ; Ruiz Jimeno, Alberto ; Scodellaro, Luca ; Vilar, Rocío ; Vizán, J. ; CDF and D0 Collaborations
Fecha de publicación2015
EditorAmerican Physical Society
CitaciónPhysical Review Letters 114(15): 151802 (2015)
ResumenCombined constraints from the CDF and D0 Collaborations on models of the Higgs boson with exotic spin J and parity P are presented and compared with results obtained assuming the standard model value JP=0+. Both collaborations analyzed approximately 10  fb−1 of proton-antiproton collisions with a center-of-mass energy of 1.96 TeV collected at the Fermilab Tevatron. Two models predicting exotic Higgs bosons with JP=0− and JP=2+ are tested. The kinematic properties of exotic Higgs boson production in association with a vector boson differ from those predicted for the standard model Higgs boson. Upper limits at the 95% credibility level on the production rates of the exotic Higgs bosons, expressed as fractions of the standard model Higgs boson production rate, are set at 0.36 for both the JP=0− hypothesis and the JP=2+ hypothesis. If the production rate times the branching ratio to a bottom-antibottom pair is the same as that predicted for the standard model Higgs boson, then the exotic bosons are excluded with significances of 5.0 standard deviations and 4.9 standard deviations for the JP=0− and JP=2+ hypotheses, respectively.
Descripciónet al.
Versión del editorhttps://doi.org/10.1103/PhysRevLett.114.151802
URIhttp://hdl.handle.net/10261/140335
DOI10.1103/PhysRevLett.114.151802
Identificadoresdoi: 10.1103/PhysRevLett.114.151802
e-issn: 1079-7114
issn: 0031-9007
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