BLUMEL, W and HEINZ, U (1995) PION MULTIPLICITY DISTRIBUTION IN ANTIPROTON-PROTON ANNIHILATION AT REST. ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 67 (2). pp. 281-286. ISSN 0170-9739,
Full text not available from this repository.Abstract
The pion multiplicity distribution is widely believed to reflect the statistical aspects of ($) over bar pp annihilation at rest. We try to reproduce it in a grand canonical picture with explicit conservation of electric charge, isospin, total angular momentum, and the parity quantum numbers P, C, and G via the projection operator formalism. Bose statistics is found to be non-negligible, particularly in fixing the interaction volume. The calculated pion multiplicity distribution for (n(pi)) = 5 turns out to depend strongly on the conservation of the angular momentum and connected quantum numbers, as well as on the spin state occupation in S-wave annihilation. However, the empirical Gaussian pion multiplicity distribution cannot be reproduced. This calls in question either the statistical ansatz or the rather old data themselves.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | INTERNAL SYMMETRY; SKYRME MODEL; PHYSICS; |
| Depositing User: | Dr. Gernot Deinzer |
| Last Modified: | 19 Oct 2022 08:37 |
| URI: | https://pred.uni-regensburg.de/id/eprint/52525 |
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