DUNE prospect for leptophobic dark matter

Abstract

Highly energetic proton/electron beam fixed target experiments extends an opportunity to probe the sub-GeV dark matter and associated interactions. In this work we have explored the sensitivity of DUNE for sub-GeV leptophobic dark matter i.e. this dark matter barely couples with the leptons. Baryon number gauge theory can predicts the existence of a 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 $U(1{)}_B$. In this scenario a light scalar dark matter couples with the standard model candidates via vector boson mediator $V_B$ which belongs to the baryonic gauge group $U(1{)}_B$. This leptophobic dark matter dominantly couples to the quarks. Under this scenario new parameter space for ${\alpha }_B$ is explored by DUNE for leptophobic dark matter candidates. This new parameter space allowed ${\alpha }_B$ to get lower value than the present exiting constraint value of ${\alpha }_B$ i.e. $10^{-6}$.

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