We report on the first direct search for charged Higgs bosons decaying into c (s) over bar in t (t) over bar events produced by p (p) over bar collisions at root s=1.96 TeV. The search uses a data sample corresponding to an integrated luminosity of 2.2 fb(-1) collected by the CDF II detector at Fermilab and looks for a resonance in the invariant mass distribution of two jets in the lepton+jets sample of t (t) over bar candidates. We observe no evidence of charged Higgs bosons in top quark decays. Hence, 95% upper limits on the top quark decay branching ratio are placed at B(t -> H(+)b)< 0.1 to 0.3 for charged Higgs boson masses of 60 to 150 GeV/c(2) assuming B(H(+)-> c (s) over bar)=1.0. The upper limits on B(t -> H(+)b) are also used as model-independent limits on the decay branching ratio of top quarks to generic scalar charged bosons beyond the standard model.

T., A., J., A., T., A., B. A., G., S., A., D., A., et al. (2009). Search for Charged Higgs Bosons in Decays of Top Quarks in p (p) over bar Collisions at root s=1.96 TeV. PHYSICAL REVIEW LETTERS, 103(10), 101803-1-101803-7 [10.1103/PhysRevLett.103.101803].

Search for Charged Higgs Bosons in Decays of Top Quarks in p (p) over bar Collisions at root s=1.96 TeV

CIOCCI, MARIA AGNESE;
2009-01-01

Abstract

We report on the first direct search for charged Higgs bosons decaying into c (s) over bar in t (t) over bar events produced by p (p) over bar collisions at root s=1.96 TeV. The search uses a data sample corresponding to an integrated luminosity of 2.2 fb(-1) collected by the CDF II detector at Fermilab and looks for a resonance in the invariant mass distribution of two jets in the lepton+jets sample of t (t) over bar candidates. We observe no evidence of charged Higgs bosons in top quark decays. Hence, 95% upper limits on the top quark decay branching ratio are placed at B(t -> H(+)b)< 0.1 to 0.3 for charged Higgs boson masses of 60 to 150 GeV/c(2) assuming B(H(+)-> c (s) over bar)=1.0. The upper limits on B(t -> H(+)b) are also used as model-independent limits on the decay branching ratio of top quarks to generic scalar charged bosons beyond the standard model.
2009
T., A., J., A., T., A., B. A., G., S., A., D., A., et al. (2009). Search for Charged Higgs Bosons in Decays of Top Quarks in p (p) over bar Collisions at root s=1.96 TeV. PHYSICAL REVIEW LETTERS, 103(10), 101803-1-101803-7 [10.1103/PhysRevLett.103.101803].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/38694
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