Signals of supersymmetry in charged-Higgs-boson decay at the Superconducting Super Collider

Journal Article · Wed Aug 01 04:00:00 EDT 1990 · Physical Review, D (Particles Fields); (USA)

DOI:https://doi.org/10.1103/PhysRevD.42.926· OSTI ID:6512414

Haim, D ^[1]

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1. Department of Physics, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, IL (USA)

We examine the possibility of finding both supersymmetry and charged Higgs bosons at the Superconducting Super Collider. If the {ital H}{sup {plus minus}} is not much heavier than the {ital W}{sup {plus minus}} and the top quark is heavy enough to decay into real {ital H}{sup {plus minus}}, then for some parameter space both channels {ital t}{r arrow}{ital b}+{ital H}{sup +} and {ital t}{r arrow}{ital b}+{ital W}{sup +} are compatible. When kinematically allowed, the {ital H}{sup {plus minus}} will primarily decay into supersymmetric channels. In particular, we studied the decay mode {ital H}{sup +}{r arrow}{ital l}{sup +}+{tilde {gamma}}+{tilde {gamma}}+{nu}{sub {ital l}}. The main background to the above process comes from the top-quark decay into a real {ital W}{sup {plus minus}} boson, followed by a subsequent semileptonic decay of the {ital W}{sup {plus minus}}. Using the Webber-Marchesini Monte Carlo program HERWIG, we produced 1000 fully hadronized events of {ital pp}{r arrow}{ital t{bar t}X}, at a center-of-mass energy of 40 TeV, followed by the {ital t{bar t}} decay into the above channels. A full comparison between the {ital H}{sup {plus minus}} and the {ital W}{sup {plus minus}} modes was performed in the search for a detectable signal. We used top-quark masses of 100, 150, and 200 GeV and {ital H}{sup {plus minus}} masses of 90 and 105 GeV. We find that although there are some differences in the missing-{ital p}{sub {ital T}} distribution, as well as in the angular distribution of the events, the low cross section for {ital H}{sup {plus minus}} production makes the signal undetectable for most of the parameter space.

• OSTI ID: 6512414
• Journal Information: Physical Review, D (Particles Fields); (USA), Journal Name: Physical Review, D (Particles Fields); (USA) Vol. 42:3; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

645204* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions & Properties
645400 -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR DISTRIBUTION
CROSS SECTIONS
DECAY
DISTRIBUTION
ELEMENTARY PARTICLES
HADRONIC PARTICLE DECAY
HIGGS BOSONS
LINEAR MOMENTUM
MONTE CARLO METHOD
PARTICLE DECAY
PARTICLE PRODUCTION
POSTULATED PARTICLES
STORAGE RINGS
SUPERCONDUCTING SUPER COLLIDER
SUPERSYMMETRY
SYMMETRY
TOP PARTICLES
TRANSVERSE MOMENTUM