Measurement of the decay phi -> mu(+)mu(-)

Authors
Achasov, MN Baru, SE Bozhenok, AV Bukin, DA Burdin, SV Dimova, TV Druzhinin, VP Dubrovin, MS Gaponenko, IA Golubev, VB Ivanchenko, VN Ivanov, PI Korol, AA Koshuba, SV Perevedentsev, EA Pyata, EE Salnikov, AA Serednyakov, SI Shary, VV Shatunov, YM Sidorov, VB Silagadze, ZK Usov, YV
Citation
Mn. Achasov et al., Measurement of the decay phi -> mu(+)mu(-), PHYS LETT B, 456(2-4), 1999, pp. 304-309
Citations number
17
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
03702693 → ACNP
Volume
456
Issue
2-4
Year of publication
1999
Pages
304 - 309
Database
ISI
SICI code
0370-2693(19990610)456:2-4<304:MOTDP->2.0.ZU;2-P
Abstract
The process e(+)e(-)-->mu(+)mu(-) has been studied with SND detector at VEP P-2M e(+)e(-) collider in the vicinity of phi(1020) resonance. The product of branching ratios of phi meson into leptons root B(phi-->mu(+)mu(-)) . B( phi --> e(+)e(-)) = (3.14 +/- 0.22 +/- 0.14) . 10(-4) was measured from the interference in the cross section of the process e(+)e(-) --> mu(+)mu(-). The branching ratio B(phi --> mu(+)mu(-))=(3.30 +/- 0.45 +/- 0.32) . 10(-4) was obtained. (C) 1999 Elsevier Science B.V. All rights reserved.