Cross section measurements of $e^{+}{e}^{-}\to p\bar{p}\ddot{I}{€}^0$ at center-of-mass energies between 4.008 and 4.600 GeV

Abstract

Based on $e^{+}{e}^{-}$ annihilation data samples collected with the BESIII detector at the BEPCII collider at 13 center of mass energies from 4.008 to 4.600 GeV, measurements of the Born cross section of $e^{+}{e}^{-}\to p\bar{p}\ddot{I}{€}^0$ are performed. No significant resonant structure is observed in the measured energy-dependent cross section. The upper limit on the Born cross section of $e^{+}{e}^{-}\to Y(4260)\to p\bar{p}\ddot{I}{€}^0$ at the 90\% C.L. is determined to be 0.01 pb.

8 pages, 2 figures