Long baseline neutrino physics with a muon storage ring neutrino source

We examine the physics capabilities of known flavor neutrino beams from intense muon sources. We find that long-baseline neutrino experiments based on such beams can provide precise measurements of neutrino oscillation mass and mixing parameters. Furthermore, they can test whether the dominant atmospheric neutrino oscillations are ${\nu }_{\mu }\to {\nu }_{\tau }$ and/or ${\nu }_{\mu }\to {\nu }_s,$ determine the ${\nu }_{\mu }\to {\nu }_e$ content of atmospheric neutrino oscillations, and measure ${\nu }_e\to {\nu }_{\tau }$ appearance. Depending on the oscillation parameters, they may be able to detect Earth matter and $\mathrm{CP}$ violation effects and to determine the ordering of some of the mass eigenstates.