QUANTUM NUMBER CONSERVATION IN STATISTICAL-MODELS AND ITS APPLICATION TO P(P)OVER-BAR-ANNIHILATION AT REST

BLUMEL, W and KOCH, P and HEINZ, U (1994) QUANTUM NUMBER CONSERVATION IN STATISTICAL-MODELS AND ITS APPLICATION TO P(P)OVER-BAR-ANNIHILATION AT REST. ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 63 (4). pp. 637-650. ISSN 0170-9739,

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Abstract

We investigate the role of exact quantum number conservation in small statistical systems and illustrate the consequences for ppBAR-annihilation at rest. A group theoretical projection method is used to calculate a restricted canonical partition function which consists only of states allowed by the conservation laws. Special emphasis is put on the conservation of isospin, total angular momentum, and C-, G-, and P-parities. Our analysis of the partition function shows that it is increasingly dominated by two-particle states as more of the conservation laws are included. The constraining effects on various multiplicity ratios and the deviations from the unconstrained limit are discussed in detail.

Item Type: Article
Uncontrolled Keywords: INTERNAL SYMMETRY; PBARP ANNIHILATION; P-STATES; PROTON; PARTICLE;
Depositing User: Dr. Gernot Deinzer
Last Modified: 19 Oct 2022 08:40
URI: https://pred.uni-regensburg.de/id/eprint/53133

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