Abstract
We calculate the dominant three body Higgs decays,H→W + W −(Z 0, γ) and\(H \to t\bar t(Z^0 ,\gamma ,g)\), in the Standard Model. We find that the branching ratios of these decays are of the order of few percent for large Higgs masses. We comment on the behaviour of the partial decay width\(\Gamma (H \to t\bar bW^ - )\) below the\(t\bar t\) threshold. Numerical results of the following three body top decays,t→W + b(γ,g, Z 0) andt→W + bH, are also given. We discuss the feasibility of observing these Higgs and top decays at future high energy colliders.
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For a summary see F. Dydak in: Proceedings of the 25th International Conference on High Energy Physics, K.K. Phua, Y. Yamaguchi (eds.)
For a review see J.F. Gunion, H.E. Haber, G. Kane, S. Dawson: The Higgs Hunter's guide. Reading, Mass.: Addison Wesley 1990
B.W. Lee, C. Quigg, G.B. Thacker: Phys. Rev. D16 (1977) 1519, and references therein
T.G. Rizzo: Phys. Lett. B217 (1989) 191
T.G. Rizzo: Phys. Rev. D31 (1985) 2366
D.A. Dicus et al.: Phys. Rev. D34 (1986) 2157
R. Decker, M. Nowakowski, A. Pilaftsis: Mod. Phys. Lett. A6 (1991) 3491; Erratum A7 (1992) 819
G. Couture: Phys Rev. D40 (1989) 2927; E42 (1990) 1855
G. Tupper et al.: Phys. Rev. D43 (1991) 274
K. Hagiwara, K. Hikasa, R.D. Peccei, D. Zeppenfeld: Nucl. Phys. B282 (1987) 253
P. Langacker, Jiang Liu; Philadelphia preprint UPR-0497T (1992)
B. Kniehl: Nucl. Phys. B357 (1991) 439
B. Kniehl: Nucl. Phys. B376 (1992) 3
M. Drees, K. Hikasa: Phys. Lett. B240 (1990) 455
V. Barger, T. Han: Phys. Lett. B212 (1988) 117
H.M. Georgi et al.: Phys Rev. Lett. 40 (1978) 692; G. Altarelli, B. Mele, F. Pittolli: Nucl. Phys. B287 (1987) 205
D. Denegri in: Large Hadron Collider Workshop. CERN 90-10, Vol. 1, 1990
G. Altarelli in Proceedings of the Workshop on Physics of Future Accelerators CERN 87-07, Vol. 1, 1987
R.P. Kauffman: Phys. Rev. D41 (1990) 3343
R. Blankenbecler, S.D. Drell: Phys. Rev. D36 (1987) 277
M. Drees, R.M. Godbole: Phys. Rev. Lett. 67 (1991) 1189; M. Drees, R. Godbole: DESY-preprint 92-044
S. Bertolini, A. Sirlin: Phys. Lett. B237 (1991) 179
V. Barger, A. Stange, W.-Y. Keung: Phys. Rev. D42 (1990) 1835
M. Jezabek, J.H. Kühn: Phys. Lett. B207 (1988) 91
D. Decamp et al., ALEPH Coll.: Phys. Lett. B236 (1990) 233; B. Adeva et al., L3 Coll.: Phys. Lett. B248 (1990) 203; P. Aarnis et al., DELPHI Coll.: Phys. Lett. B245 (1990) 276; M.Z. Akrawy et al., OPAL Coll.: Phys. Lett. B236 (1990) 224; L3 Coll.: CERN-preprint CERN-PRE/92-40
G. Eilam, J.L. Hewett, A. Soni: Phys. Rev. D44 (1991) 1473
V. Barger, W.-Y. Keung, T.G. Rizzo: Phys. Rev. D40 (1989) 2274
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Decker, R., Nowakowski, M. & Pilaftsis, A. Dominant three-body decays of a heavy higgs and top quark. Z. Phys. C - Particles and Fields 57, 339–347 (1993). https://doi.org/10.1007/BF01565067
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DOI: https://doi.org/10.1007/BF01565067