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Title: Higgs signal for h {yields} aa at hadron colliders.

Abstract

We 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 {yields} b{bar b} and {tau}{sup +}{tau}{sup -}, 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 b{bar b} {tau}{sup +}{tau}{sup -} or b{bar b} b{bar b} 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 {yields} aa {yields} b{bar b} b{bar b} would provide a large statistical significance, with a signal-to-background ratio on the order of 1:2.more » In these searches, the main challenge would be to retain the adequate tagging efficiency of b's and {tau}'s in the low p{sub T} region.« less

Authors:
; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC); Wisconsin Alumni Research Foundation
OSTI Identifier:
929268
Report Number(s):
ANL-HEP-PR-07-106
TRN: US0804092
DOE Contract Number:  
DE-AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
JHEP
Additional Journal Information:
Journal Volume: 4; Journal Issue: Apr. 2008
Country of Publication:
United States
Language:
ENGLISH
Subject:
43 PARTICLE ACCELERATORS; CROSS SECTIONS; DECAY; EFFICIENCY; FERMILAB TEVATRON; HADRONS; HIGGS BOSONS; PRODUCTION

Citation Formats

Carena, M, Han, T, Huang, G -Y, Wagner, C E.M., High Energy Physics, FNAL,, Univ. of Wisconsin, and Univ. of Chicago. Higgs signal for h {yields} aa at hadron colliders.. United States: N. p., 2008. Web. doi:10.1088/1126-6708/2008/04/092.
Carena, M, Han, T, Huang, G -Y, Wagner, C E.M., High Energy Physics, FNAL,, Univ. of Wisconsin, & Univ. of Chicago. Higgs signal for h {yields} aa at hadron colliders.. United States. doi:10.1088/1126-6708/2008/04/092.
Carena, M, Han, T, Huang, G -Y, Wagner, C E.M., High Energy Physics, FNAL,, Univ. of Wisconsin, and Univ. of Chicago. Tue . "Higgs signal for h {yields} aa at hadron colliders.". United States. doi:10.1088/1126-6708/2008/04/092.
@article{osti_929268,
title = {Higgs signal for h {yields} aa at hadron colliders.},
author = {Carena, M and Han, T and Huang, G -Y and Wagner, C E.M. and High Energy Physics and FNAL, and Univ. of Wisconsin and Univ. of Chicago},
abstractNote = {We 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 {yields} b{bar b} and {tau}{sup +}{tau}{sup -}, 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 b{bar b} {tau}{sup +}{tau}{sup -} or b{bar b} b{bar b} 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 {yields} aa {yields} b{bar b} b{bar b} 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{sub T} region.},
doi = {10.1088/1126-6708/2008/04/092},
journal = {JHEP},
number = Apr. 2008,
volume = 4,
place = {United States},
year = {2008},
month = {4}
}