New constraints on the charged Higgs sector in two-Higgs-doublet models

Journal Article · Fri Jun 01 00:00:00 EDT 1990 · Physical Review, D (Particles Fields); (USA)

DOI:https://doi.org/10.1103/PhysRevD.41.3421· OSTI ID:6760314

Barger, V; Hewett, J L ^[1]; Phillips, R J.N. ^[2]

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1. Physics Department, University of Wisconsin, Madison, Wisconsin 53706 (USA)
2. Rutherford Appleton Laboratory, Chilton, Didcot, Oxon (England)

Two-Higgs-doublet models predict nonstandard physical effects through the interactions of charged Higgs scalars. We analyze the experimental measurements that bound these effects and quantify the resulting constraints on the charged-Higgs-boson mass and coupling parameter tan{beta}. We consider low-energy data relating to {ital B}{sub {ital d}}{sup 0}-{ital {bar B}}{sub {ital d}}{sup 0}, {ital D}{sup 0}-{ital {bar D}}{sup 0}, and {ital K}{sup 0}-{ital {bar K}}{sup 0} mixing, and high-energy measurements at {ital p{bar p}} colliders relating to searches for the top quark and events with large missing {ital E}{sub {ital T}}. Our analysis systematically takes account of theoretical uncertainties in bag factors, decay constants, and quark mixing matrix elements by Monte Carlo sampling. We combine our results to determine the regions in the charged-Higgs-boson parameter space that are consistent with present data. An important result is that the Collider Detector at Fermilab top-quark mass bound {ital m}{sub {ital t}}{gt}77 GeV can probably not be evaded by appealing to {ital t}{r arrow}{ital bH}{sup +} decays, since only a very small sliver of parameter space is consistent with {ital m}{sub {ital t}}{lt}77 GeV in this scenario. Consistency with either the CERN NA31 or Fermilab E731 {epsilon}{prime}/{epsilon} measurements is possible. The rare decays {ital B}{r arrow}{ital K}{sup *}{gamma}, {ital K}{sup +}{r arrow}{pi}{sup +}{nu}{bar {nu}}, and {ital K}{sub {ital L}}{r arrow}{mu}{mu} are also examined in these models within the context of our combined analysis.

• DOE Contract Number: AC02-76ER00881
• OSTI ID: 6760314
• Journal Information: Physical Review, D (Particles Fields); (USA), Vol. 41:11; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
HIGGS BOSONS
MASS
ANTIKAONS NEUTRAL
B NEUTRAL MESONS
CONSTRAINTS
D NEUTRAL MESONS
KAONS NEUTRAL
KOBAYASHI-MASKAWA MATRIX
MATRIX ELEMENTS
MONTE CARLO METHOD
PROTON-ANTIPROTON INTERACTIONS
QUARKS
STANDARD MODEL
SUPERSYMMETRY
TOP PARTICLES
ANTIKAONS
ANTIMATTER
ANTIPARTICLES
B MESONS
BARYON-BARYON INTERACTIONS
BOSONS
CHARM PARTICLES
CHARMED MESONS
D MESONS
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
KAONS
MATHEMATICAL MODELS
MATRICES
MESONS
NUCLEON-ANTINUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE MODELS
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
STRANGE MESONS
STRANGE PARTICLES
SYMMETRY
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES
645203* - High Energy Physics- Particle Interactions & Properties-Theoretical- Weak Interactions & Properties
645103 - High Energy Physics- Particle Interactions & Properties-Experimental- Strong Interactions & Baryon & Meson Properties