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In this letter we show that the recently theoretically predicted andexperimentally observed "orbital Feshbach resonance" in alkali-earth-likeYb-173 atom is a narrow resonance in energy, while it is hundreds Gauss wide interm of magnetic field strength, taking the advantage that the magnetic momentdifference between the open and closed channels is quite small. Therefore thisis an ideal platform for the experimental realization of a strongly interactingFermi superfluid with narrow resonance. We show that the transition temperaturefor the Fermi superfluid in this system, especially at the BCS side of theresonance, is even higher than that in a wide resonance, which is also due tothe narrow character of this resonance. Our results will encourage experimentalefforts to realize Fermi superfluid in the alkali-earth-like Yb-173 system, theproperties of which will be complementary to extensively studied Fermisuperfluids nearby a wide resonance in alkali K-40 and Li-6 systems.

Orbital Feshbach Resonance: A "Wide" Narrow Resonance for Higher Transition Temperature Fermi Superfluid