Direct measurement of the phi(1020) leptonic branching ratio

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dc.creatorAchasov, M. N.
dc.creatorBeloborodov, K. I.
dc.creatorBerdyugin, A. V.
dc.creatorBogdanchikov, A. G.
dc.creatorBozhenok, A. V.
dc.creatorBukin, A. D.
dc.creatorBukin, D. A.
dc.creatorBurdin, S. V.
dc.creatorDimova, T. V.
dc.creatorDrozdetsky, A. A.
dc.creatorDruzhinin, V. P.
dc.creatorDubrovin, M. S.
dc.creatorGaponenko, I. A.
dc.creatorGolubev, V. B.
dc.creatorIvanchenko, V. N.
dc.creatorIvanov, P. M.
dc.creatorKorol, A. A.
dc.creatorKoshuba, S. V.
dc.creatorLysenko, A. P.
dc.creatorNesterenko, I. N.
dc.creatorPakhtusova, E. V.
dc.creatorPerevedentsev, E. A.
dc.creatorSalnikov, A. A.
dc.creatorSerednyakov, S. I.
dc.creatorShary, V. V.
dc.creatorShatunov, Yu. M.
dc.creatorSidorov, V. A.
dc.creatorSilagadze, Z. K.
dc.creatorSkrinsky, A. N.
dc.creatorUsov, Yu. V.
dc.creatorVasiljev, A. V.
dc.date2001-02-12
dc.date.accessioned2026-07-07T11:30:13Z
dc.date.available2026-07-07T11:30:13Z
dc.descriptionThe process e+e-->mu+mu- has been studied by SND detector at VEPP-2M e+e- collider in the phi(1020)-resonance energy region. The measured effective phi meson leptonic branching ratio: B(phi->l+l-)=sqrt{B(phi->e+e-)*B(phi->mu+mu-)}=(2.89+-0.10+-0.06)*10^{-4} agrees well with the PDG value B(phi->e+e-)=(2.91+-0.07)*10^{-4} confirming mu-e universality. Without additional assumption of mu-e universality the branching ratio B(phi->mu+mu-)=(2.87+-0.20+-0.14)*10^{-4} was obtained.
dc.descriptionRevTeX, 5 pages, 3 figures. To be published in Phys. Rev. Lett
dc.identifierhttps://arxiv.org/abs/hep-ex/0102029
dc.identifierhttp://arxiv.org/abs/hep-ex/0102029
dc.identifierPhys.Rev.Lett.86:1698-1701,2001
dc.identifierdoi:10.1103/PhysRevLett.86.1698
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/196950
dc.subjectHigh Energy Physics - Experiment
dc.titleDirect measurement of the phi(1020) leptonic branching ratio
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