Study of the process e+e-\to μ+μ- in the energy region \sqrt{s}=980, 1040 -- 1380 MeV

Details Study of the process e+e-\to μ+μ- in the energy region \sqrt{s}=980, 1040 -- 1380 MeV Study of the process e+e-\to μ+μ- in the energy region \sqrt{s}=980, 1040 -- 1380 MeV

2008-10-03

arxiv.org/abs/0810.0571v1

Phys.Rev.D79:112012,2009

Physics

High Energy Physics

High Energy Physics - Experiment

29 pages, 23 figures

Scientific paper

10.1103/PhysRevD.79.112012

The cross section of the process e+e-\to\mu+\mu- was measured in the SND experiment at the VEPP-2M e+e- collider in the energy region \sqrt{s}=980, 1040 -- 1380 MeV. The event numbers of the process e+e-\to\mu+\mu- were normalized to the integrated luminosity measured using e+e-\to e+e- and e+e-\to\gamma\gamma processes. The ratio of the measured cross section to the theoretically predicted value is 1.006\pm 0.007 \pm 0.016 and 1.005 \pm 0.007 \pm 0.018 in the first and second case respectively. Using results of the measurements, the electromagnetic running coupling constant \alpha in the energy region \sqrt{s}=1040 -- 1380 MeV was obtained <1/\alpha> = 134.1\pm 0.5 \pm 1.2 and this is in agreement with theoretical expectation.

Affiliated with

Also associated with

No associations

Rating

Study of the process e+e-\to μ+μ- in the energy region \sqrt{s}=980, 1040 -- 1380 MeV 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 Study of the process e+e-\to μ+μ- in the energy region \sqrt{s}=980, 1040 -- 1380 MeV, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Study of the process e+e-\to μ+μ- in the energy region \sqrt{s}=980, 1040 -- 1380 MeV will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-409259