Leading Particle Effect in Fragmentation of Diffractively Excited States

抄録

The observed rapidity distribution of particles from diffractive state X in \=pp→ \=pX is asymmetric with respect to the kinematic central value \bar{y}=ln(√{s}/M) of the system X, where √{s} and M are c.m.s. energy and invariant mass of X, respectively. In the framework of the geometric quark jet model, this asymmetry suggests existence of a leading particle in fragmentation of diffractively excited states.