Implications of a large Ht t -coupling for three-body decays of Higgs boson and top quark
- Inst. fuer Theoretische Kernphysik, Univ. Kartsruhe, Postfach 6980, D-7500 Karlsruhe 1 (DE)
- Inst. fuer Physik, Johannes-Gutenbert-Univ., Postfach 3980, D-6500 Mainz (DE)
In this paper the three-body decays of a heavy Higgs H {yields} t{bar t}Z, H {yields} t{bar b}W{sup {minus}} + c.c. and of a heavy top t {yields} bW{sup +}H are studied in the context of the Standard Model. The common feature of these decay channels is the relative big coupling constant of the Higgs particle to the top quark. Indeed within a certain range of the masses M{sub H}, m{sub t} the authors find that branching ratios of the order O(10{sup {minus}3}) are possible for the decays H {yields} t{bar t}Z and t {yields} bW{sup +}H. The decay width {Gamma}(H {yields} t{bar b}W{sup {minus}}) as a function of M{sub H} and m{sub t} is investigated below the 2m{sub t} threshold (M{sub H} {lt} 2m{sub t}) and is found to have an interesting behavior just near this threshold.
- OSTI ID:
- 5692588
- Journal Information:
- Modern Physics Letters A; (United States), Vol. 6:38; ISSN 0217-7323
- Country of Publication:
- United States
- Language:
- English
Similar Records
Intermediate-mass Higgs boson and isosinglet neutral heavy lepton signals at hadron supercolliders
Higgs-boson decay to four fermions including a single top quark below [ital t[bar t]] threshold
Related Subjects
Pa
HIGGS BOSONS
PARTICLE DECAY
TOP PARTICLES
BRANCHING RATIO
COUPLING CONSTANTS
INTERMEDIATE VECTOR BOSONS
STANDARD MODEL
THREE-BODY PROBLEM
THRESHOLD ENERGY
TOPONIUM
TRANSVERSE MOMENTUM
W MINUS BOSONS
W PLUS BOSONS
BOSONS
DECAY
ELEMENTARY PARTICLES
ENERGY
HADRONS
INTERMEDIATE BOSONS
LINEAR MOMENTUM
MANY-BODY PROBLEM
MATHEMATICAL MODELS
MESONS
PARTICLE MODELS
POSTULATED PARTICLES
QUARKONIUM
UNIFIED GAUGE MODELS
662210* - Specific Theories & Interaction Models
Particle Systematics- Unified Theories & Models- (1992-)
662300 - Specific Interactions
Decays & Processes- (1992-)