TY - JOUR

T1 - Statistical model analysis of multiparticle correlations in [formula presented] annihilation

AU - Osada, T.

AU - Maruyama, M.

AU - Takagi, F.

PY - 1999/1/1

Y1 - 1999/1/1

N2 - A new statistical model for multiparticle production in (Formula presented) annihilation is proposed based on the idea of the longitudinal phase space with limited transverse momentum. The longitudinal rapidity space is divided into cells of equal size in order to take into account the Bose-Einstein correlations (BECs) with a finite correlation length (Formula presented) The maximum entropy method is used to determine the probability distributions of the final state pions (or ρ mesons) for a given mean multiplicity, mean transverse momentum, and mean total energy. Event simulation based on our model is performed in two extreme cases: a π model and a ρ model. The π model assumes that only pions are produced directly. On the other hand, the ρ model assumes that only ρ mesons are produced directly and they decay into pions. A good overall fit to experimental data from DESY PETRA to CERN LEP energy regions is obtained for (Formula presented) ranging from 0.6 to 1.2 in the π model. We find that the BECs play a very important role in reproducing various correlation data. In some correlation data, resonance effects and conservation laws are also important.

AB - A new statistical model for multiparticle production in (Formula presented) annihilation is proposed based on the idea of the longitudinal phase space with limited transverse momentum. The longitudinal rapidity space is divided into cells of equal size in order to take into account the Bose-Einstein correlations (BECs) with a finite correlation length (Formula presented) The maximum entropy method is used to determine the probability distributions of the final state pions (or ρ mesons) for a given mean multiplicity, mean transverse momentum, and mean total energy. Event simulation based on our model is performed in two extreme cases: a π model and a ρ model. The π model assumes that only pions are produced directly. On the other hand, the ρ model assumes that only ρ mesons are produced directly and they decay into pions. A good overall fit to experimental data from DESY PETRA to CERN LEP energy regions is obtained for (Formula presented) ranging from 0.6 to 1.2 in the π model. We find that the BECs play a very important role in reproducing various correlation data. In some correlation data, resonance effects and conservation laws are also important.

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U2 - 10.1103/PhysRevD.59.014024

DO - 10.1103/PhysRevD.59.014024

M3 - Article

AN - SCOPUS:85038337339

VL - 59

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

SN - 1550-7998

IS - 1

ER -