Scattering amplitudes of fermions on monopoles

A bstract We consider scattering processes involving massless fermions and ’t Hooft-Polyakov magnetic monopoles in a minimal SU(2) model and in the Grand Unified SU(5) theory. We construct expressions for on-shell amplitudes for these processes in the J = 0 partial wave using the spinor helicity bas...

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Bibliographic Details
Published in:The journal of high energy physics 2023-11, Vol.2023 (11), p.214-16, Article 214
Main Author: Khoze, Valentin V.
Format: Article
Language:English
Subjects:
Amplitudes
Catalysis
Charged particles
Classical and Quantum Gravitation
Elementary Particles
Energy
Fermions
Helicity
High energy physics
Magnetic monopoles
Nonperturbative Effects
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Regular Article - Theoretical Physics
Relativity Theory
Scattering
Scattering Amplitudes
Solitary waves
Solitons Monopoles and Instantons
String Theory
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Summary:A bstract We consider scattering processes involving massless fermions and ’t Hooft-Polyakov magnetic monopoles in a minimal SU(2) model and in the Grand Unified SU(5) theory. We construct expressions for on-shell amplitudes for these processes in the J = 0 partial wave using the spinor helicity basis consisting of single-particle and pairwise helicities. These processes are unsuppressed and are relevant for the monopole catalysis of proton decay. The amplitudes for the minimal processes involving a single fermion scattering on a monopole in the initial state and half-fermion solitons in the final state are presented for the first time and are used to obtain the amplitudes for processes involving more fermions in the initial state and integer fermion numbers in the final state. A number of such anomalous and non-anomalous processes, along with their amplitude expressions, are written down for the SU(5) GUT model.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP11(2023)214