DUNE Prospect for Leptophobic Dark Matter

Highly energetic proton/electron beam fixed-target experiments extend an opportunity to probe the sub-GeV dark matter and
associated interactions. In this work, we have explored the sensitivity of DUNE (Deep Underground Neutrino Experiment) for
sub-GeV leptophobic dark matter, i.e., this dark matter barely couples with the leptons. Baryon number gauge theory can
predict the existence of leptophobic cold dark matter particle candidates. In our work, the dark matter candidate is considered
to be scalar whose mass is defined by the symmetry breaking of new baryonic gauge group Uð1ÞB. In this scenario, a light scalar
dark matter couples with the standard model candidates via vector boson mediator VB which belongs to the baryonic gauge
group Uð1ÞB. This leptophobic dark matter dominantly couples to the quarks. Under this scenario, new parameter space for αB
is explored by DUNE for leptophobic dark matter candidates. This new parameter space allowed αB to get a lower value than
the present exiting constraint value of αB, i.e., 10−6.