Experimental Consequences of Family Unification

Jonathan Bagger; Savas Dimopoulos; Eduard Massó; M. Hall Reno

doi:10.1103/PhysRevLett.54.2199

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Experimental Consequences of Family Unification

Jonathan Bagger

Savas Dimopoulos

Eduard Massó^* and M. Hall Reno

Lyman Laboratory of Physics, Harvard University, Cambridge, Massachusetts 02138, and Stanford Linear Accelerator Center, Stanford University, Stanford, California 94305

Department of Physics, Stanford University, Stanford, California 94305

Stanford Linear Accelerator Center, Stanford University, Stanford, California 94305

^*On leave of absence from Departament de Física Teòrica, Universitat Autònoma de Barcelona, Bellaterra, Spain.

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Phys. Rev. Lett. 54, 2199 – Published 20 May, 1985

DOI: https://doi.org/10.1103/PhysRevLett.54.2199

Abstract

Theories of family unification predict four left-handed and four right-handed families of quarks and leptons, all with masses below 265 GeV. The lightest mirror quark has a mass of less than 140 GeV. All charged leptons are lighter than 55 GeV, and the lightest is below 40 GeV. All five new neutrinos have masses less than 40 GeV and contribute to the width of the $Z^{0}$ . We study the decays of these new families, and discuss rare processes such as $μ \to e γ$ . We also examine proton decay, and show that it can proceed into $e^{+} π^{0}$ at the observable but acceptable rate of $10^{32 \pm 1}$ yr.

References (12)

M. Gell-Mann, P. Ramond, and R. Slansky, in Supergravity, edited by P. van Nieuwenhuizen and D. Freedman (North-Holland, Amsterdam, 1979) F. Wilczek and A. Zee, Phys. Rev. D 25, 553 (1982)
J. Bagger and S. Dimopoulos, Nucl. Phys. B244, 247 (1984)
G. Senjanović, F. Wilczek, and A. Zee, Phys. Lett. 141B, 389 (1984)
J. Bagger, S. Dimopoulos, E. Massó, and H. Reno, Stanford Linear Accelerator Center Report No. SLAC-PUB-3441, 1984 (to be published)
Omitted endnote
L. Hall, J. Kim, and A. Nelson, Harvard University Report No. HUTP-85/A020, 1985 (to be published)
S. Barr, Phys. Lett. 112B, 219 (1982) H. Georgi, unpublished
J. Bowman et al., Phys. Rev. Lett. 42, 556 (1979)
B. Lee, S. Pakvasa, R. Shrock, and H. Sugawara, Phys. Rev. Lett. 17, 937 (1977)
J. Bagger, S. Dimopoulos, and E. Massó, Phys. Lett. 145B, 211 (1984)
R. Bionta et al., Phys. Rev. Lett. 51, 27, 522(E) (1983)
S. Dimopoulos, S. Raby, and F. Wilczek, Phys. Lett. 112B, 133 (1982) J. Ellis, D. Nanopoulos, and S. Rudaz, Nucl. Phys. B202, 43 (1982)

[c1] M. Gell-Mann, P. Ramond, and R. Slansky, in Supergravity, edited by P. van Nieuwenhuizen and D. Freedman (North-Holland, Amsterdam, 1979) F. Wilczek and A. Zee, Phys. Rev. D 25, 553 (1982)

[c2] J. Bagger and S. Dimopoulos, Nucl. Phys. B244, 247 (1984)

[c3] G. Senjanović, F. Wilczek, and A. Zee, Phys. Lett. 141B, 389 (1984)

[c4] J. Bagger, S. Dimopoulos, E. Massó, and H. Reno, Stanford Linear Accelerator Center Report No. SLAC-PUB-3441, 1984 (to be published)

[c5] Omitted endnote

[c6] L. Hall, J. Kim, and A. Nelson, Harvard University Report No. HUTP-85/A020, 1985 (to be published)

[c7] S. Barr, Phys. Lett. 112B, 219 (1982) H. Georgi, unpublished

[c8] J. Bowman et al., Phys. Rev. Lett. 42, 556 (1979)

[c9] B. Lee, S. Pakvasa, R. Shrock, and H. Sugawara, Phys. Rev. Lett. 17, 937 (1977)

[c10] J. Bagger, S. Dimopoulos, and E. Massó, Phys. Lett. 145B, 211 (1984)

[c11] R. Bionta et al., Phys. Rev. Lett. 51, 27, 522(E) (1983)

[c12] S. Dimopoulos, S. Raby, and F. Wilczek, Phys. Lett. 112B, 133 (1982) J. Ellis, D. Nanopoulos, and S. Rudaz, Nucl. Phys. B202, 43 (1982)

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Experimental Consequences of Family Unification

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References (12)

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