Anomalous baryon number non-conservation in the presence of SU(5) monopoles
1983; Elsevier BV; Volume: 218; Issue: 1 Linguagem: Inglês
10.1016/0550-3213(83)90484-4
ISSN1873-1562
AutoresV. A. Rubakov, M.S. Serebryakov,
Tópico(s)Quantum Chromodynamics and Particle Interactions
ResumoIt is shown that the effects related to the Adler-Bell-Jackiw anomaly give rise to strong baryon number non-conservation in the presence of magnetic monopoles in the SU(5) grand unified theory. The main assumption made is that, as long as distances of order 1 GeV−1 from the monopole center are considered, the masses of light fermions u, d, s, e, μ can be neglected, while heavy fermions decouple. Two types of the SU(5) monopoles are studied, namely: (i) the fundamental monopole with a non-vanishing chromomagnetic charge, (ii) the minimal purely electromagnetic monopole. In both cases the processes like p+monopole→e++momopole+everything are allowed. It is argued that the cross sections of these processes are of order 1 GeV−2 β−2, at least for sufficiently low monopole-proton relative velocities β.
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