New experimental data for the decays $\phi\to\mu^+\mu^-$ and $\phi\to\pi^+\pi^-$ from SND detector

• Main Authors: Achasov, M. N, Aulchenko, V. M, Beloborodov, K. I, Berdyugin, A. V, Bozhenok, A. V, Bukin, D. A, Burdin, S. V, Dimova, T. V, Dolinsky, S. I, Drozdetsky, A. A, Druzhinin, V. P, Dubrovin, M. S, Gaponenko, I. A, Golubev, V. B, Ivanchenko, V. N, Ivanov, P. M, Korol, A. A, Koshuba, S. V, Kukartsev, G. A, Nesterenko, I. N, Otboev, A. V, Pakhtusova, E. V, Popov, V. M, Salnikov, A. A, Serednyakov, S. I, Shary, V. V, Shatunov, Yu. M, Sidorov, V. A, Silagadze, Z. K, Usov, Yu. V, Vasiljev, A. V, Zakharov, A. S
• Format: Journal Article
• Language: English
• Published: 01.11.1999
• Subjects: Physics - High Energy Physics - Experiment
• DOI: 10.48550/arxiv.hep-ex/9910070

Nucl.Phys.A675:320c-324c,2000 The processes $e^+e^-\to\mu^+\mu^-$ and $e^+e^-\to\pi^+\pi^-$ have been studied with SND detector at VEPP-2M $e^+e^-$ collider in the vicinity of $\phi(1020)$ resonance. The branching ratios $B(\phi\to\mu^+\mu^-)=(3.30\pm 0.45\pm 0.32)\times 10^{-4}$ and $B(\phi\to\pi^+\pi^-)=(0.71\pm 0.11\pm 0.09)\times 10^{-4}$ were obtained.