The annihilation frequencies of 19 annihilation reactions at rest obtained in different target densities are analysed in order to determine the values of the P-wave annihilation percentage at each target density and the average hadronic branching ratios from P- and S-states. Both the assumptions of linear dependence of the annihilation frequencies on the P-wave annihilation percentage of the protonium state and the approach with the enhancement factors of Batty are considered. Furthermore the cases of incompatible measurements are discussed.

Contribution from S and P waves in anti-p.p annihilation at rest / G., B., V., F., A., F., P., M., A., R., P., S., A., B., M., B., M., C., S., D.C., R., D., D., G., B., G., U., M., I., M., M., P., N., S.C., R., S., S., V., V., V., et al.. - In: NUCLEAR PHYSICS. A. - ISSN 0375-9474. - 686:1-4(2001), pp. 317-340. [10.1016/S0375-9474(00)00517-0]

Contribution from S and P waves in anti-p.p annihilation at rest

AGNELLO, MICHELANGELO;IAZZI, Felice;MINETTI, Bruno;
2001

Abstract

The annihilation frequencies of 19 annihilation reactions at rest obtained in different target densities are analysed in order to determine the values of the P-wave annihilation percentage at each target density and the average hadronic branching ratios from P- and S-states. Both the assumptions of linear dependence of the annihilation frequencies on the P-wave annihilation percentage of the protonium state and the approach with the enhancement factors of Batty are considered. Furthermore the cases of incompatible measurements are discussed.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/1845784
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