High spin states of the pentaquark: a QCD sum rule approach

摘要

I J~P = (0(3/2))~- and (1(3/2))~- pentaquark states with uudds are studied in the QCD sum rule approach. The sum rule suggests that there exist the (0(3/2))~- and the (1(3/2))~- states. These states may be observed as extremely narrow peaks, since they can be much below the S-wave threshold and the only allowed decay channel is NK in D-wave, whose centrifugal barrier is so large that the width is strongly suppressed. The (0(3/2))~- state may be assigned to the observed Θ~+(1540) and the (1(3/2))~- state can be a candidate of Θ~(++).