Higgs Signal for h to aa at Hadron Colliders

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dc.creatorCarena, Marcela
dc.creatorHan, Tao
dc.creatorHuang, Gui-Yu
dc.creatorWagner, Carlos E. M.
dc.date2007-12-17
dc.date2008-04-08
dc.date.accessioned2026-07-07T12:42:25Z
dc.date.available2026-07-07T12:42:25Z
dc.descriptionWe assess the prospect of observing a neutral Higgs boson at hadron colliders in its decay to two spin-zero states, a, for a Higgs mass of 90-130 GeV, when produced in association with a W or Z boson. Such a decay is allowed in extensions of the MSSM with CP-violating interactions and in the NMSSM, and can dominate Higgs boson final states, thereby evading the LEP constraints on standard Higgs boson production. The light spin-zero state decays primarily via a to bb and tau+tau-, so this signal channel retains features distinct from the main backgrounds. Our study shows that at the Tevatron, there may be potential to observe a few events in the bb tau+tau- or bbbb channels with relatively small background, although this observation would be statistically limited. At the LHC, the background problem is more severe, but with cross sections and integrated luminosities orders of magnitude larger than at the Tevatron, the observation of a Higgs boson in this decay mode would be possible. The channel h to aa to bbbb would provide a large statistical significance, with a signal-to-background ratio on the order of 1:2. In these searches, the main challenge would be to retain the adequate tagging efficiency of b's and tau's in the low p_T region.
dc.descriptionVersion to be published in JHEP. 20 pages, 5 figures
dc.identifierhttps://arxiv.org/abs/0712.2466
dc.identifierhttp://arxiv.org/abs/0712.2466
dc.identifierJHEP 0804:092,2008
dc.identifierdoi:10.1088/1126-6708/2008/04/092
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/220073
dc.subjectHigh Energy Physics - Phenomenology
dc.titleHiggs Signal for h to aa at Hadron Colliders
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