Speaker
Description
Hidden U(1) symmetries in the right-handed neutrino ($\nu_R$) sector are theoretically well-motivated and would give rise to an inherently dark gauge boson which we refer to as the $\nu_R$-philic $Z'$. An important feature of this $Z'$ is that its couplings to neutrinos are generally much larger than its couplings to charged leptons and quarks, providing a particularly interesting scenario for future neutrino experiments such as DUNE to probe. In this talk, I'll discuss two approaches to probe this $Z'$ at DUNE near detectors via (i) searching for $Z'$ decay signals and (ii) precision measurement of elastic neutrino-electron ($\nu$-$e$) scattering. I will show that the former will have sensitivity comparable to or better than previous beam dump experiments while the latter will improve current limits substantially for large neutrino couplings.
