In the diffraction dissociation of π- into μ+μ-π- on a Cu nucleus at 50 GeV/c, the cross section {Mathematical expression} for the 1+S(ρ0π) wave was measured. The branching ratio of ρ0→μ+μ- could be calculated from the ratio of this and the corresponding cross sections in the diffraction dissociation of π- into π+π-π-. The obtained value {Mathematical expression} is in good agreement with the branching ratio {Mathematical expression}, as expected if eμ universality holds.
Determination of the branching ratio ofρ 0→+μ− in the coherent dissociation π−→μ+μ−π− and π−→π+π−π− / Y. M. Antipov, V. A. Batarin, V. A. Bessubov, M. S. Bilenky, N. P. Budanov, D. S. Denisov, O. V. Eroshin, P. L. Frabetti, Y. P. Gorin, Y. A. Gornushkin, V. G. Kartasheva, P. A. Kulinich, A. A. Nosdrin, A. G. Olshevski, F. Palombo, A. I. Petrukhin, R. V. Pirtzkhalava, S. A. Polovnikov, V. N. Roinishvili, D. A. Stoianova, A. V. Vishnevski. - In: ZEITSCHRIFT FÜR PHYSIK. C, PARTICLES AND FIELDS. - ISSN 0170-9739. - 42:2(1989), pp. 185-187.
Determination of the branching ratio ofρ 0→+μ− in the coherent dissociation π−→μ+μ−π− and π−→π+π−π−
F. Palombo;
1989
Abstract
In the diffraction dissociation of π- into μ+μ-π- on a Cu nucleus at 50 GeV/c, the cross section {Mathematical expression} for the 1+S(ρ0π) wave was measured. The branching ratio of ρ0→μ+μ- could be calculated from the ratio of this and the corresponding cross sections in the diffraction dissociation of π- into π+π-π-. The obtained value {Mathematical expression} is in good agreement with the branching ratio {Mathematical expression}, as expected if eμ universality holds.
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