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We present a new nucleosynthesis process that may take place on neutron-richejecta experiencing an intensive neutrino flux. The nucleosynthesis proceedssimilarly to the standard $r$-process, a sequence of neutron-captures andbeta-decays, however with charged-current neutrino absorption reactions onnuclei operating much faster than beta-decays. Once neutron capture reactionsfreeze-out the produced $r$-process neutron-rich nuclei undergo a fastconversion of neutrons into protons and are pushed even beyond the$\beta$-stability line producing the neutron-deficient $p$-nuclei. Thisscenario, which we denote as the $\nu r$-process, provides an alternativechannel for the production of $p$-nuclei and the short-lived nucleus $^{92}$Nb.We discuss the necessary conditions posed on the astrophysical site for the$\nu r$-process to be realized in nature. While these conditions are notfulfilled by current neutrino-hydrodynamic models of $r$-process sites, futuremodels, including more complex physics and a larger variety of outflowconditions, may achieve the necessary conditions in some regions of the ejecta.

Production of $p$-nuclei from $r$-process seeds: the $\nu r$-process