Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2001-02-12
Phys.Rev.Lett.86:1698-1701,2001
Physics
High Energy Physics
High Energy Physics - Experiment
RevTeX, 5 pages, 3 figures. To be published in Phys. Rev. Lett
Scientific paper
10.1103/PhysRevLett.86.1698
The 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.
Achasov M. N.
Beloborodov K. I.
Berdyugin Andrei V.
Bogdanchikov A. G.
Bozhenok A. V.
No associations
LandOfFree
Direct measurement of the phi(1020) leptonic branching ratio does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Direct measurement of the phi(1020) leptonic branching ratio, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Direct measurement of the phi(1020) leptonic branching ratio will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-444130