Superheavy-quarkonium decays with two Higgs doublets

O. J. P. Éboli; A. A. Natale; F. R. A. Simo

doi:10.1103/PhysRevD.39.2668

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Superheavy-quarkonium decays with two Higgs doublets

O. J. P. Éboli

A. A. Natale

F. R. A. Simo

Departamento de Fiiaasica Matemática, Instituto de Fiiaasica, Universidade de São Paulo, Caixa Postal 20516, 01498 São Paulo, São Paulo, Brazil

Instituto de Fiiaasica, Universidade Estadual Paulista, Caixa Postal 5956, 01405 São Paulo, Brazil

Centro Brasileiro de Pesquisas Fiiaasicas, Rua Dr. Xavier Sigaud, 150, 22290 Rio de Janeiro, Rio de Janeiro, Brazil

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Phys. Rev. D 39, 2668 – Published 1 May, 1989

DOI: https://doi.org/10.1103/PhysRevD.39.2668

Abstract

We study the decay modes of a S-wave superheavy quarkonium, formed by a possible fourth-generation quark in two-Higgs-doublet models. Because of the enhancement of Yukawa couplings and longitudinal weak bosons the main decays of these superheavy states will be into neutral scalar bosons $H_{i}^{0}$ $H_{j}^{0}$ and a charged scalar plus a W boson. If the $H^{\mp}$ $W^{\pm}$ channel is open for the ψ ${(1}^{- -}$ ) superheavy quarkonium it will provide a quite clean signal for a charged Higgs boson. The decay of the pseudoscalar quarkonium η ${(0}^{- +}$ ) into a Z boson and one of the scalars will also be present in a large amount.

References (17)

V. Barger et al., Phys. Rev. Lett. 57, 1672 (1986).
V. Barger et al., Phys. Rev. D 35, 3366 (1987).
Heavy-quarkonium decay into HZ has also been studied by L. Bergstrom and P. Poutiainen, Phys. Lett. B 182, 83 (1986).
J. H. Kühn, J. Kaplan and E. G. Safiani, Nucl. Phys. B157, 125 (1979); B. Guberina, J. H. Kühn, R. Peccei and R. Rückl, ibid. B174, 317 (1980).
H. E. Haber, G. L. Kane and T. Sterling, Nucl. Phys. B161, 493 (1979); N. G. Deshpande and E. Ma, Phys. Rev. D 18, 2574 (1978); J. F. Donoghue and L.-F. Li, ibid. 19, 945 (1979).
J. F. Gunion and H. E. Haber, Nucl. Phys. B272, 1 (1986).
H. Hüffel and G. Pöcsik, Z. Phys. C 8, 13 (1981); for the supersymmetric case, see R. Casalbuoni, D. Dominici, F. Feruglio and R. Gatto, Phys. Lett. B 191, 409 (1987).
L. F. Abbot, P. Sikivie and M. B. Wise, Phys. Rev. D 21, 1393 (1980); G. Athanasiu and F. Gilman, Phys. Lett. 153B, 274 (1985); G. Athanasiu, P. J. Franzini and F. Gilman, Phys. Rev. D 32, 3010 (1985); see also S. Bertolini, Nucl. Phys. B 272, 77 (1986).
V. Barger, H. Baer, K. Hagiwara, and R. J. N. Phillips, Phys. Rev. D 30, 947 (1984); T. P. Cheng and L.-F. Li, ibid. 34, 226 (1986).
When finishing this work we came across the work of V. Barger and K. Whisnant, Int. J. Mod. Phys. A 3, 1907 (1988), which contains results parallel to ours, but dealing particularly with toponium decays in a superstring-inspired model.
The single-quark decay would be important only if the heavy channels that we are considering were not open; see R. W. Robinett, Phys. Rev. D 33, 736 (1986).
F. Wilczek, Phys. Rev. Lett. 39, 1304 (1977).
G. Gamberini, G. F. Giudice and G. Ridolfi, Phys. Lett. B 196, 527 (1987); Nucl. Phys. B292, 237 (1987).
J. A. Grifols and A. Mendez, Phys. Rev. D 22, 1725 (1980).
J. F. Gunion et al., Nucl. Phys. B294, 621 (1987).
The production of Higgs-boson pairs through gluon fusion (compared to quark fusion) can be seen in S. D. Willenbrock, Phys. Rev. D 35, 173 (1987); O. J. P. E´boli, G. C. Marques, S. F. Novaes and A. A. Natale, Phys. Lett. B 197, 269 (1987); R. Foot, H. Lew and G. C. Joshi, Phys. Rev. D 37, 3161 (1988). The production of pairs $H^{0}$ $H^{0}$ , $H^{+}$ $H^{-}$ , and $H^{+ -}$ $W^{- +}$ through vector-boson fusion was discussed by W.-Y. Keung, Mod. Phys. Lett. A et al.2, 765 (1987), and O. J. P. E´boli , 37, 837 (1988).
H. Baer, V. Barger, H. Goldberg and J. Ohnemus, Phys. Rev. D 38, 3467 (1988).

[c1] V. Barger et al., Phys. Rev. Lett. 57, 1672 (1986).

[c2] V. Barger et al., Phys. Rev. D 35, 3366 (1987).

[c3] Heavy-quarkonium decay into HZ has also been studied by L. Bergstrom and P. Poutiainen, Phys. Lett. B 182, 83 (1986).

[c4] J. H. Kühn, J. Kaplan and E. G. Safiani, Nucl. Phys. B157, 125 (1979); B. Guberina, J. H. Kühn, R. Peccei and R. Rückl, ibid. B174, 317 (1980).

[c5] H. E. Haber, G. L. Kane and T. Sterling, Nucl. Phys. B161, 493 (1979); N. G. Deshpande and E. Ma, Phys. Rev. D 18, 2574 (1978); J. F. Donoghue and L.-F. Li, ibid. 19, 945 (1979).

[c6] J. F. Gunion and H. E. Haber, Nucl. Phys. B272, 1 (1986).

[c7] H. Hüffel and G. Pöcsik, Z. Phys. C 8, 13 (1981); for the supersymmetric case, see R. Casalbuoni, D. Dominici, F. Feruglio and R. Gatto, Phys. Lett. B 191, 409 (1987).

[c8] L. F. Abbot, P. Sikivie and M. B. Wise, Phys. Rev. D 21, 1393 (1980); G. Athanasiu and F. Gilman, Phys. Lett. 153B, 274 (1985); G. Athanasiu, P. J. Franzini and F. Gilman, Phys. Rev. D 32, 3010 (1985); see also S. Bertolini, Nucl. Phys. B 272, 77 (1986).

[c9] V. Barger, H. Baer, K. Hagiwara, and R. J. N. Phillips, Phys. Rev. D 30, 947 (1984); T. P. Cheng and L.-F. Li, ibid. 34, 226 (1986).

[c10] When finishing this work we came across the work of V. Barger and K. Whisnant, Int. J. Mod. Phys. A 3, 1907 (1988), which contains results parallel to ours, but dealing particularly with toponium decays in a superstring-inspired model.

[c11] The single-quark decay would be important only if the heavy channels that we are considering were not open; see R. W. Robinett, Phys. Rev. D 33, 736 (1986).

[c12] F. Wilczek, Phys. Rev. Lett. 39, 1304 (1977).

[c13] G. Gamberini, G. F. Giudice and G. Ridolfi, Phys. Lett. B 196, 527 (1987); Nucl. Phys. B292, 237 (1987).

[c14] J. A. Grifols and A. Mendez, Phys. Rev. D 22, 1725 (1980).

[c15] J. F. Gunion et al., Nucl. Phys. B294, 621 (1987).

[c16] The production of Higgs-boson pairs through gluon fusion (compared to quark fusion) can be seen in S. D. Willenbrock, Phys. Rev. D 35, 173 (1987); O. J. P. E´boli, G. C. Marques, S. F. Novaes and A. A. Natale, Phys. Lett. B 197, 269 (1987); R. Foot, H. Lew and G. C. Joshi, Phys. Rev. D 37, 3161 (1988). The production of pairs $H^{0}$ $H^{0}$ , $H^{+}$ $H^{-}$ , and $H^{+ -}$ $W^{- +}$ through vector-boson fusion was discussed by W.-Y. Keung, Mod. Phys. Lett. A et al.2, 765 (1987), and O. J. P. E´boli , 37, 837 (1988).

[c17] H. Baer, V. Barger, H. Goldberg and J. Ohnemus, Phys. Rev. D 38, 3467 (1988).

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Superheavy-quarkonium decays with two Higgs doublets

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