Elsevier

Physics Letters B

Volume 813, 10 February 2021, 136066
Physics Letters B

Gauged baryon number and dibaryonic dark matter

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Abstract

The minimal standard model of quarks and leptons is extended with a set of vectorlike fermions to allow baryon number B to become a gauged U(1)B symmetry. The B assignments of the new particles are determined by renormalizable interactions with the known quarks through a color triplet scalar diquark. The spontaneous breaking of U(1)B by a scalar with B=3 results in a conserved residual global B symmetry. A singlet neutral scalar with B=2 is a possible long-lived dark-matter candidate.

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