Using a transverse momentum cutoff in kT factorization, the authors fix the soft and semihard mean multiplicities in a double negative binomial fit and find that KNO scaling holds only for narrow rapidity windows and that KNO violation is not caused by the rising semihard fraction.
Soft and Semi-Hard Components Structure in Multiparticle Production in High Energy Collisions
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abstract
Superposition of jets of different flavors as well as superposition of jets of different topologies describe well observed structures (shoulder, H_q oscillations) in e+e- annihilation. The analysis of similar effects seen in experimental data in hadron-hadron collision is performed successfully by superimposing soft and semi-hard contributions at various energies. Negative Binomial multiplicity distributions are chosen in all examined classes of collisions as elementary substructures, i.e., as QCD inspired genuine self-similar fractal processes. Predictions on final particle multiplicity distributions in hadron-hadron collisions at 14 TeV are discussed.
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Soft and semihard components of multiplicity distributions in the $k_T$ factorization approach
Using a transverse momentum cutoff in kT factorization, the authors fix the soft and semihard mean multiplicities in a double negative binomial fit and find that KNO scaling holds only for narrow rapidity windows and that KNO violation is not caused by the rising semihard fraction.