Constraints on supersymmetric particles from the CERN LEP data on <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi>Z</mi></mrow><mrow><mn>0</mn></mrow></msup></mrow></math></span> decay properties

Howard Baer; Manuel Drees; Xerxes Tata

doi:10.1103/PhysRevD.41.3414

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Constraints on supersymmetric particles from the CERN LEP data on $Z^{0}$ decay properties

Howard Baer

Manuel Drees

Xerxes Tata

Physics Department, Florida State University, Tallahassee, Florida 32306

CERN, Geneva, Switzerland

Department of Physics and Astronomy, University of Hawaii, Honolulu, Hawaii 96822

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Phys. Rev. D 41, 3414 – Published 1 June, 1990

DOI: https://doi.org/10.1103/PhysRevD.41.3414

Abstract

We show that the recent measurements of the total $Z^{0}$ width and the peak hadronic cross section at CERN LEP lead to, with very mild assumptions, the bounds $m_{\tilde{ν}} > 36$ GeV, $m_{{\tilde{l}}_{L}} > 38$ GeV, and $m_{{\tilde{d}}_{L}} > 33$ GeV. For the minimal supersymmetric model, we are able to derive the additional bounds $M_{{\tilde{W}}_{-}} > 37$ GeV, $M_{{\tilde{Z}}_{3}} > 57$ GeV on the mass of the lighter chargino and third lightest neutralino, respectively, while the bound on $m_{{\tilde{d}}_{L}}$ is strengthened to 39 GeV. Finally, some improved strategies for searches of new physics using the peak cross section are commented on.

References (27)

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G. Abrams et al., Phys. Rev. Lett. 63, 724 (1989)
F. Abe et al., Phys. Rev. Lett. 63, 720 (1989)
G. Abrams et al., Phys. Rev. Lett. 63, 2173 (1989)
ALEPH Collaboration, D. Decamp et al., Phys. Lett. B 231, 519 (1989) DELPHI Collaboration, P. Aarnio et al., ibid. 231, 539 (1989) L3 Collaboration, B. Adeva et al., ibid. 231, 509 (1989) OPAL Collaboration, M. Akrawy et al., ibid. 231, 530 (1989)
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P. Langacker, Phys. Rev. Lett. 63, 1920 (1989)
H. Baer et al., in Physics at LEP ([2]) M. Chen, C. Dionisi, M. Martinez, and X. Tata, Phys. Rep. 159, 201 (1988) R. Barbieri et al., CERN Yellow Report No. 89-08, 1989 (unpublished)
D. Bardin et al., CERN Report No. TH-5468, 1989 (unpublished)
[10]
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M. Drees, C. Kim, and X. Tata, Phys. Rev. D 37, 784 (1988)
([17])
R. Ansari et al., Phys. Lett. B 195, 613 (1987) H. Baer, K. Hagiwara, and X. Tata, Phys. Rev. D 35, 1398 (1987)
F. Abe et al., Phys. Rev. Lett. 62, 1825 (1989) H. Baer, X. Tata, and J. Woodside, ibid. 63, 352 (1989)
H. Baer, K. Hagiwara, and X. Tata, Phys. Rev. D 38, 1485 (1988)
ALEPH Collaboration, D. Decamp et al., Phys. Lett. B 236, 233 (1990) Report No. CERN-EP/89-168, 1989 (unpublished)
Omitted endnote
R. M. Barnett, H. Haber, and K. Lackner, Phys. Lett. 126B, 64 (1983)
K. S. Hirata et al., in Proceedings of the Second Workshop on the Elementary Particle Picture of the Universe, KEK, 1988, edited by M. Yoshimura Tsukuba, Japan (unpublished), p. 73 K. Ng, K. Olive, and M. Srednicki, Phys. Lett. B 188, 138 (1987)
D. Caldwell et al., Phys. Rev. Lett. 61, 510 (1988) S. P. Ahlen et al., Phys. Lett. B 195, 603 (1987)
C. Kounnas et al., Phys. Lett. 132B, 95 (1983) L. Hall and J. Polchinski, ibid. 152B, 335 (1985)
Omitted endnote
L3 Collaboration, B. Adeva et al., Phys. Lett. B 233, 530 (1989) ALEPH Collaboration, D. Decamp et al., ibid. 236, 86 (1990) OPAL Collaboration, M. Akrawy et al., Report No. CERN-EP/89-176, 1989 (unpublished)

[c1] G. Arnison et al., Phys. Lett. 122B, 103 (1982) ibid.126B, 398 (1983) M. Banner et al., ibid. 122B, 476 (1983) P. Bagnaia et al., ibid. 129B, 130 (1983)

[c2] G. Altarelli et al., in Physics at LEP, LEP Jamboree, Geneva, Switzerland, 1985, edited by J. Ellis and R. Peccei (CERN Yellow Report No. 86-02, Geneva, 1986)

[c3] G. Abrams et al., Phys. Rev. Lett. 63, 724 (1989)

[c4] F. Abe et al., Phys. Rev. Lett. 63, 720 (1989)

[c5] G. Abrams et al., Phys. Rev. Lett. 63, 2173 (1989)

[c6] ALEPH Collaboration, D. Decamp et al., Phys. Lett. B 231, 519 (1989) DELPHI Collaboration, P. Aarnio et al., ibid. 231, 539 (1989) L3 Collaboration, B. Adeva et al., ibid. 231, 509 (1989) OPAL Collaboration, M. Akrawy et al., ibid. 231, 530 (1989)

[c7] ALEPH Collaboration, D. Decamp et al., Phys. Lett. B 235, 399 (1990) S. L. Wu, talk given at the Annual Meeting of the Division of Particles and Fields of the APS, Houston, Texas, 1990 (unpublished) L3 Collaboration, J. Branson, Annual Meeting of the Division of Particles and Fields of the APS, Houston, Texas, 1990 OPAL Collaboration, W. Gary and G. van Dahlen, Annual Meeting of the Division of Particles and Fields of the APS, Houston, Texas, 1990 DELPHI Collaboration, A Firestone, Annual Meeting of the Division of Particles and Fields of the APS, Houston, Texas, 1990

[c8] P. Langacker, Phys. Rev. Lett. 63, 1920 (1989)

[c9] H. Baer et al., in Physics at LEP ([2]) M. Chen, C. Dionisi, M. Martinez, and X. Tata, Phys. Rep. 159, 201 (1988) R. Barbieri et al., CERN Yellow Report No. 89-08, 1989 (unpublished)

[c10] D. Bardin et al., CERN Report No. TH-5468, 1989 (unpublished)

[c11] [10]

[c12] K. Fujii, talk at the International Europhysics Conference, Madrid, Spain, 1989 (unpublished)

[c13] H. P. Nilles, Phys. Rep. 110, 1 (1984) P. Nath, R. Arnowitt, and A. Chamseddine, Applied N = 1 Supergravity (ICTP Series in Theoretical Physics, Vol. 1) (World Scientific, Singapore, 1984) H. Haber and G. Kane, Phys. Rep. 117, 75 (1985)

[c14] X. Tata and D. Dicus, Phys. Rev. D 35, 2110 (1987) H. Baer, V. Barger, D. Karatas, and X. Tata, ibid. 36, 96 (1987) H. Baer, A. Bartl, D. Karatas, W. Majerotto, and X. Tata, Int. J. Mod. Phys. A 4, 4111 (1989)

[c15] M. Drees, C. Kim, and X. Tata, Phys. Rev. D 37, 784 (1988)

[c16] ([17])

[c17] R. Ansari et al., Phys. Lett. B 195, 613 (1987) H. Baer, K. Hagiwara, and X. Tata, Phys. Rev. D 35, 1398 (1987)

[c18] F. Abe et al., Phys. Rev. Lett. 62, 1825 (1989) H. Baer, X. Tata, and J. Woodside, ibid. 63, 352 (1989)

[c19] H. Baer, K. Hagiwara, and X. Tata, Phys. Rev. D 38, 1485 (1988)

[c20] ALEPH Collaboration, D. Decamp et al., Phys. Lett. B 236, 233 (1990) Report No. CERN-EP/89-168, 1989 (unpublished)

[c21] Omitted endnote

[c22] R. M. Barnett, H. Haber, and K. Lackner, Phys. Lett. 126B, 64 (1983)

[c23] K. S. Hirata et al., in Proceedings of the Second Workshop on the Elementary Particle Picture of the Universe, KEK, 1988, edited by M. Yoshimura Tsukuba, Japan (unpublished), p. 73 K. Ng, K. Olive, and M. Srednicki, Phys. Lett. B 188, 138 (1987)

[c24] D. Caldwell et al., Phys. Rev. Lett. 61, 510 (1988) S. P. Ahlen et al., Phys. Lett. B 195, 603 (1987)

[c25] C. Kounnas et al., Phys. Lett. 132B, 95 (1983) L. Hall and J. Polchinski, ibid. 152B, 335 (1985)

[c26] Omitted endnote

[c27] L3 Collaboration, B. Adeva et al., Phys. Lett. B 233, 530 (1989) ALEPH Collaboration, D. Decamp et al., ibid. 236, 86 (1990) OPAL Collaboration, M. Akrawy et al., Report No. CERN-EP/89-176, 1989 (unpublished)

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Constraints on supersymmetric particles from the CERN LEP data on $Z^{0}$ decay properties

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Constraints on supersymmetric particles from the CERN LEP data on Z0 decay properties

Abstract

References (27)

Constraints on supersymmetric particles from the CERN LEP data on $Z^{0}$ decay properties