New type of mixing in the minimal quark-lepton symmetry and a lower bound on the vector-leptoquark mass

Journal Article · Fri Dec 01 04:00:00 EST 1995 · Physics of Atomic Nuclei

OSTI ID:283093

Kuznetsov, A V; Mikheev, N V ^[1]

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1. Yaroslavl State Univ. (Russian Federation)

Some low-energy implications of the minimal extension of the standard model based on Pati-Salam quark-lepton SU(4){sub v} {circle_times} SU(2){sub L} {circle_times} G{sub R} symmetry is analyzed. It is shown that, if this symmetry is realized, it is necessary to consider a new type of mixing in the interaction of SU(4){sub v} leptoquarks with quarks and leptons. The resulting additional arbitrariness in the choice of parameters makes it possible to substantially reduce the lower limit on the vector-leptoquark mass M{sub x} from {pi} and K decays and {mu}e conversion. The only mixing-independent constraint stems from a cosmological estimate of {pi}{sup 0} {yields} v{bar v} decay width and is M{sub x} > 18 TeV. 26 refs., 2 tabs.

• OSTI ID: 283093
• Journal Information: Physics of Atomic Nuclei, Journal Name: Physics of Atomic Nuclei Journal Issue: 12 Vol. 58; ISSN 1063-7788; ISSN PANUEO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
LEPTONIC DECAY
LEPTONS
MIXING
PIONS NEUTRAL
QUARKS
REST MASS
SU-4 GROUPS