Probing top quark decay into a light top squark in the supersymmetric standard model at the upgraded Fermilab Tevatron

M. Hosch; R. J. Oakes; K. Whisnant; Jin Min Yang; Bing-Lin Young; X. Zhang

doi:10.1103/PhysRevD.58.034002

Access by Xinjiang University

Probing top quark decay into a light top squark in the supersymmetric standard model at the upgraded Fermilab Tevatron

M. Hosch¹, R. J. Oakes², K. Whisnant¹, Jin Min Yang^2,*, Bing-Lin Young¹, and X. Zhang³

¹Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011
²Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208
³CCAST (World Laboratory), P.O. Box 8730, Beijing 100080, ChinaInstitute of High Energy Physics, Academia Sinica, Beijing 100039, China

^*On leave from Physics Department, Henan Normal University, China. Present address: Department of Physics, Tohoku University, Sendai, Japan.

PDF

Phys. Rev. D 58, 034002 – Published 22 June, 1998

DOI: https://doi.org/10.1103/PhysRevD.58.034002

Abstract

We investigate the possibility of observing the exotic decay mode of the top quark into the lightest top squark $(t_{1})$ and neutralino $({\tilde{χ}}_{1}^{0})$ in the minimal supersymmetric standard model with $R$ parity at the upgraded Fermilab Tevatron. First we examine the bounds for the branching fraction $B (\vec{t} t_{1} {\tilde{χ}}_{1}^{0})$ from the available experimental data, and then consider all possible backgrounds and investigate the possibility of observing this final state at the Tevatron. We find that this final state is unobservable at run 1. However, run 2 can either discover it, or establish strong limits $(\sim 1 %)$ on the branching fraction of this decay.

References (25)

For a review, see, e.g., H. E. Haber and G. L. Kane, Phys. Rep. 117, 75 (1985).
M. Dree and K. Hikasa, Phys. Lett. B 252, 127 (1990).
J. Ellis and S. Rudaz, Phys. Lett. 128B, 248 (1983); A. Bouquet, J. Kaplan, and C. Savoy, Nucl. Phys. B262, 299 (1985).
See, e.g., M. Carena, M. Quiros, and C. E. M. Wagner, hep-ph/9710401.
K.-I. Hikasa and M. Kobasyashi, Phys. Rev. D 36, 724 (1987).
S. Mrenna and C. P. Yuan, Phys. Lett. B 367, 188 (1996).
S. Park, in 10th Topical Workshop on Proton–Anti-proton Collider Physics, edited by Rajendran Raja and John Yoh (AIP, New York, 1995).
S. Ambrosanio, G. L. Kane, G. D. Kribs, S. P. Martin, and S. Mrenna, Phys. Rev. Lett. 76, 3498 (1996); ibid.S. Dimopolous, M. Dine, S. Raby, and S. Thomas, 76, 3494 (1996).
H. Baer and X. Tata, Phys. Lett. 167B, 241 (1986); V. Barger and R. J. N. Phillips, Phys. Rev. D 41, 884 (1990); ibid.H. Baer, M. Drees, R. Godbole, J. F. Gunion, and X. Tata, 44, 725 (1991); M. Drees and D. P. Roy, Phys. Lett. B 269, 155 (1991); R. M. Godbole, and D. P. Roy, Phys. Rev. D 43, 3640 (1991); K. Hidaka, Y. Kizukuri, and T. Kon, Phys. Lett. B 278, 155 (1992); R. M. Barnett, R. Cruz, J. F. Gunion, and B. Hubbard, Phys. Rev. D 47, 1048 (1993).
A. Djouadi, W. Hollik, and C. Junger, Phys. Rev. D 54, 5629 (1996); ibid.C. S. Li, R. J. Oakes, and J. M. Yang, 54, 6883 (1996).
CLEO Collaboration, M. Alam et al., Phys. Rev. Lett. 74, 2885 (1995); ALEPH Collaboration, a preliminary result presented at the International Europhysics Conference on High Energy Physics, Jerusalem, August 1997 (unpublished).
W. de Boer et al., hep-ph/9712376; W. de BoerZ. Phys. C 75, 627 (1997); H. Baer and M. Brhlik, Phys. Rev. D 55, 3201 (1997), and references therein for earlier calculations.
ALEPH Collaboration, presented at the International Europhysics Conference on High Energy Physics [11].
P. Janot, S. Asai, and M. Chemarin, presented at the International Europhysics Conference on High Energy Physics [11].
D0 Collaboration, S. Abachi et al., Phys. Rev. D 57, 589 (1998); , Phys. Rev. Lett. 76, 2222 (1996).
J. D. Wells and G. L. Kane, Phys. Rev. Lett. 76, 869 (1996).
D. Garcia and J. Sola, Phys. Lett. B 357, 349 (1995); ibid.P. H. Chankowski and S. Pokorski, 366, 188 (1996).
G. Altarelli, CERN-TH-97-278, hep-ph/9710434.
SLD Collaboration, K. Abe et al., Phys. Rev. Lett. 80, 660 (1998); ALEPH Collaboration, R. Barate et al., Phys. Lett. B 401, 150 (1997); ibid.R. Barate401, 163 (1997).
J. Guasch and J. Sola, Phys. Lett. B 416, 353 (1998).
C. S. Li, R. J. Oakes, and J. M. Yang, Phys. Rev. D 49, 293 (1994); ibid.J. M. Yang and C. S. Li, 49, 3412 (1994); ibid.G. Couture, C. Hamzaoui, and H. Konig, 52, 1713 (1995); ibid.J. L. Lopez, D. V. Nanopoulos, and R. Rangarajan, 56, 3100 (1997); ibid.G. Couture, M. Frank, and H. Konig, 56, 4213 (1997); G. M. de Divitiis, R. Petronzio, and L. Silvestrini, Nucl. Phys. B504, 45 (1997); J. Guasch, hep-ph/9710267.
C. S. Li, B. Q. Hu, J. M. Yang, and C. G. Hu, Phys. Rev. D 52, 5014 (1995); ibid.J. M. Yang and C. S. Li, 52, 1541 (1995); ibid.J. Kim, J. L. Lopez, D. V. Nanopoulos, and R. Rangarajan, 54, 4364 (1996); ibid.J. M. Yang and C. S. Li, 54, 4380 (1996); C. S. Li, H. Y. Zhou, Y. L. Zhu, and J. M. Yang, Phys. Lett. B 379, 135 (1996); S. Alam, K. Hagiwara, and S. Matsumoto, Phys. Rev. D 55, 1307 (1997); ibid.Z. Sullivan, 56, 451 (1997); W. Hollik, W. M. Mosle, and D. Wackeroth, hep-ph/9706218.
G. L. Kane and S. Mrenna, Phys. Rev. Lett. 77, 3502 (1996).
D. W. Gerdes, hep-ex/9706001.
See, for example, E. L. Berger and H. Contopanagos, Phys. Lett. B 361, 115 (1995); Phys. Rev. D 54, 3085 (1996); ibid.57, 253 (1998).

[c1] For a review, see, e.g., H. E. Haber and G. L. Kane, Phys. Rep. 117, 75 (1985).

[c2] M. Dree and K. Hikasa, Phys. Lett. B 252, 127 (1990).

[c3] J. Ellis and S. Rudaz, Phys. Lett. 128B, 248 (1983); A. Bouquet, J. Kaplan, and C. Savoy, Nucl. Phys. B262, 299 (1985).

[c4] See, e.g., M. Carena, M. Quiros, and C. E. M. Wagner, hep-ph/9710401.

[c5] K.-I. Hikasa and M. Kobasyashi, Phys. Rev. D 36, 724 (1987).

[c6] S. Mrenna and C. P. Yuan, Phys. Lett. B 367, 188 (1996).

[c7] S. Park, in 10th Topical Workshop on Proton–Anti-proton Collider Physics, edited by Rajendran Raja and John Yoh (AIP, New York, 1995).

[c8] S. Ambrosanio, G. L. Kane, G. D. Kribs, S. P. Martin, and S. Mrenna, Phys. Rev. Lett. 76, 3498 (1996); ibid.S. Dimopolous, M. Dine, S. Raby, and S. Thomas, 76, 3494 (1996).

[c9] H. Baer and X. Tata, Phys. Lett. 167B, 241 (1986); V. Barger and R. J. N. Phillips, Phys. Rev. D 41, 884 (1990); ibid.H. Baer, M. Drees, R. Godbole, J. F. Gunion, and X. Tata, 44, 725 (1991); M. Drees and D. P. Roy, Phys. Lett. B 269, 155 (1991); R. M. Godbole, and D. P. Roy, Phys. Rev. D 43, 3640 (1991); K. Hidaka, Y. Kizukuri, and T. Kon, Phys. Lett. B 278, 155 (1992); R. M. Barnett, R. Cruz, J. F. Gunion, and B. Hubbard, Phys. Rev. D 47, 1048 (1993).

[c10] A. Djouadi, W. Hollik, and C. Junger, Phys. Rev. D 54, 5629 (1996); ibid.C. S. Li, R. J. Oakes, and J. M. Yang, 54, 6883 (1996).

[c11] CLEO Collaboration, M. Alam et al., Phys. Rev. Lett. 74, 2885 (1995); ALEPH Collaboration, a preliminary result presented at the International Europhysics Conference on High Energy Physics, Jerusalem, August 1997 (unpublished).

[c12] W. de Boer et al., hep-ph/9712376; W. de BoerZ. Phys. C 75, 627 (1997); H. Baer and M. Brhlik, Phys. Rev. D 55, 3201 (1997), and references therein for earlier calculations.

[c13] ALEPH Collaboration, presented at the International Europhysics Conference on High Energy Physics [11].

[c14] P. Janot, S. Asai, and M. Chemarin, presented at the International Europhysics Conference on High Energy Physics [11].

[c15] D0 Collaboration, S. Abachi et al., Phys. Rev. D 57, 589 (1998); , Phys. Rev. Lett. 76, 2222 (1996).

[c16] J. D. Wells and G. L. Kane, Phys. Rev. Lett. 76, 869 (1996).

[c17] D. Garcia and J. Sola, Phys. Lett. B 357, 349 (1995); ibid.P. H. Chankowski and S. Pokorski, 366, 188 (1996).

[c18] G. Altarelli, CERN-TH-97-278, hep-ph/9710434.

[c19] SLD Collaboration, K. Abe et al., Phys. Rev. Lett. 80, 660 (1998); ALEPH Collaboration, R. Barate et al., Phys. Lett. B 401, 150 (1997); ibid.R. Barate401, 163 (1997).

[c20] J. Guasch and J. Sola, Phys. Lett. B 416, 353 (1998).

[c21] C. S. Li, R. J. Oakes, and J. M. Yang, Phys. Rev. D 49, 293 (1994); ibid.J. M. Yang and C. S. Li, 49, 3412 (1994); ibid.G. Couture, C. Hamzaoui, and H. Konig, 52, 1713 (1995); ibid.J. L. Lopez, D. V. Nanopoulos, and R. Rangarajan, 56, 3100 (1997); ibid.G. Couture, M. Frank, and H. Konig, 56, 4213 (1997); G. M. de Divitiis, R. Petronzio, and L. Silvestrini, Nucl. Phys. B504, 45 (1997); J. Guasch, hep-ph/9710267.

[c22] C. S. Li, B. Q. Hu, J. M. Yang, and C. G. Hu, Phys. Rev. D 52, 5014 (1995); ibid.J. M. Yang and C. S. Li, 52, 1541 (1995); ibid.J. Kim, J. L. Lopez, D. V. Nanopoulos, and R. Rangarajan, 54, 4364 (1996); ibid.J. M. Yang and C. S. Li, 54, 4380 (1996); C. S. Li, H. Y. Zhou, Y. L. Zhu, and J. M. Yang, Phys. Lett. B 379, 135 (1996); S. Alam, K. Hagiwara, and S. Matsumoto, Phys. Rev. D 55, 1307 (1997); ibid.Z. Sullivan, 56, 451 (1997); W. Hollik, W. M. Mosle, and D. Wackeroth, hep-ph/9706218.

[c23] G. L. Kane and S. Mrenna, Phys. Rev. Lett. 77, 3502 (1996).

[c24] D. W. Gerdes, hep-ex/9706001.

[c25] See, for example, E. L. Berger and H. Contopanagos, Phys. Lett. B 361, 115 (1995); Phys. Rev. D 54, 3085 (1996); ibid.57, 253 (1998).

Physical Review D

Export citation

Export citation

Probing top quark decay into a light top squark in the supersymmetric standard model at the upgraded Fermilab Tevatron

Abstract

References (25)

Outline

Information

Filter

Filter

Article Lookup

Enter a citation