Boost Invariance and Multiplicity Dependence of the Charge Balance Function in pi+p and K+p collisions at s~(1/2) = 22 GeV

摘要

1. (BF is invariant under a longitudinal boost over the whole rapidity region, in contrast to the strong dependence of the particle density on rapidity; 2. BF in a limited rapidity window is boost-invariantly related to that in the full rapidity range and becomes narrower with decreasing size of the window; 3. BF becomes narrower for increasing multiplicity; 4. The charge fluctuations are boost invariant but depend on the size of the rapidity window.