Lifetime measurements in Sb 112

Lifetimes of some high-spin states in the negative parity magnetic dipole band in $^{112}\mathrm{Sb}$ were determined using the Doppler-shift attenuation method. The deduced $M1$ transition rates show a small decrease with increasing spin. This decrease is reasonably accounted for within the framework of the tilted axis cranking (TAC) model. There also appears to be a considerable contribution from collective rotation. This is the first indication of such behavior in the $A\ensuremath{\approx}110$ mass region, determined through lifetime measurements. The TAC calculations based on a $\ensuremath{\pi}g{{}_{9/2}}^{\ensuremath{-}1}\ensuremath{\bigotimes}\ensuremath{\nu}{h}_{11/2}$ configuration reproduce the magnetic dipole band.