Two-loop {ital O}({alpha}{sub {ital s}}{ital G}{sub {ital F}}{ital M}{sup 2}{sub {ital Q}}) heavy-quark corrections to the interactions between Higgs and intermediate bosons
- National Institute for Nuclear Theory, University of Washington, P.O. Box 351550, Seattle, Washington 98195 (United States)
By means of a low-energy theorem, we analyze at {ital O}({alpha}{sub {ital sG}}{sub {ital FM}}{sup 2}{sub {ital Q}}) the shifts in the standard-model {ital W}{sup +}{ital W}{sup {minus}}{ital H} and {ital ZZH} couplings induced by virtual high-mass quarks {ital Q} with {ital M}{sub {ital Q}}{gt}{ital M}{sub {ital Z}},{ital M}{sub {ital H}}, which includes the top quark. Invoking the improved Born approximation, we then find the corresponding corrections to various four- and five-point Higgs-boson production and decay processes which involve the {ital W}{sup +}{ital W}{sup {minus}}{ital H} and {ital ZZH} vertices with one or both of the gauge bosons being connected to light-fermion currents, respectively. This includes {ital e}{sup +}{ital e}{sup {minus}}{r_arrow}{ital f{bar f}H} via Higgs radiation, via {ital W}{sup +}{ital W}{sup {minus}} fusion (with {ital f}={nu}{sub {ital e}}), and via {ital ZZ} fusion (with {ital f}={ital e}), as well as {ital H}{r_arrow}2{ital V}{r_arrow}4{ital f} (with {ital V}={ital W},{ital Z}). {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 284587
- Journal Information:
- Physical Review, D, Vol. 53, Issue 11; Other Information: PBD: Jun 1996
- Country of Publication:
- United States
- Language:
- English
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