Measurement of the decay φ→ μ+μ
The process e + e −→ μ + μ − has been studied with SND detector at VEPP-2M e + e − collider in the vicinity of φ(1020) resonance. The product of branching ratios of φ meson into leptons B(φ→μ +μ −)·B(φ→e +e −) =(3.14±0.22±0.14)·10 −4 was measured from the interference in the cross section of the pro...
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Published in: | Physics letters. B 1999-06, Vol.456 (2), p.304-309 |
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Main Authors: | , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | The process
e
+
e
−→
μ
+
μ
− has been studied with SND detector at VEPP-2M
e
+
e
− collider in the vicinity of
φ(1020) resonance. The product of branching ratios of
φ meson into leptons
B(φ→μ
+μ
−)·B(φ→e
+e
−)
=(3.14±0.22±0.14)·10
−4
was measured from the interference in the cross section of the process
e
+
e
−→
μ
+
μ
−. The branching ratio
B(
φ→
μ
+
μ
−)=(3.30±0.45±0.32)·10
−4 was obtained. |
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ISSN: | 0370-2693 1873-2445 |
DOI: | 10.1016/S0370-2693(99)00502-X |