Search for Higgs Bosons Decaying into Tau Pairs in pp bar Collisions at D0.

Owen, M.

Technical Information Center Oak Ridge Tennessee

关键词: Particle collisions;    Decay;    Analysis techniques;    Branching ratio;    Cross sections;   

RP-ID  :  DE2008940845

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

A search for neutral Higgs bosons decaying into tau pairs is presented using data in p(bar p) collisions at (radical)s = 1.96 TeV. One of the tau leptons is identified via its decay into an electron or muon and the other via its decay into a hadronic final state. The data, corresponding to an integrated luminosity of around 1.0 fb(sup -1), were collected with the D0 detector at the Fermilab Tevatron collider between April 2002 and February 2006. No significant excess of events above the background expectation is observed and limits on the cross section times branching ratio for neutral Higgs bosons decaying into tau pairs, p(bar p) (yields) (phi) (yields) (tau)(sup +)(tau)(sup -), are set. The cross section limits are interpreted as exclusions in the parameter space of the minimal supersymmetric Standard Model, resulting in exclusions in the range 40 < tan(beta) < 70 for M(sub A) < 200 GeV. Finally, the effect of Higgs bosons with a large total width is considered and the first model independent correction to the cross section limits for the width effect is presented.