Analysis Of Transverse-Momentum Distributions For Pp Interactions At 360 Gev/C In The Framework Of A Quark-Diquark Fragmentation Model

Using a quark-diquark fragmentation model, in which either the Field-Feynman or the Lund model is coupled with a quark-diquark distribution function, we study transverse momentum distributions,p T, for the inclusive reactionspp→hadron +anything at 360 GeV/c. We find that a primordial mean transverse momentum 〈k T〉≃0.4 GeV/c can well reproduce thep T 2 distributions of charged hadrons, π0,K s 0 , Λ0,K * and Σ* and the Feynmanx−p T correlations. We confirm that a diquark in a proton plays an important role in reproducing thex−p T correlation of Λ0.