Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2008-06-18
Physics
High Energy Physics
High Energy Physics - Experiment
6 pages, 5 figures, proceedings for Moriond QCD 2008
Scientific paper
We report the study of e+e- -> Upsilon(1S)pi+pi-, Upsilon(2S)pi+pi-, Upsilon(3S)pi+pi-, and Upsilon(1S)K+K-, near the peak of the Upsilon(5S) resonance. The results are based on a data sample of 21.7 fb^-1 collected with the Belle detector at the KEKB e+e- collider. Attributing the signals to the Upsilon(5S) resonance, the partial widths Gamma(Upsilon(5S)->Upsilon(1S)pi+pi-) = 0.59+-0.04(stat)+-0.09(syst) MeV and Gamma(Upsilon(5S)->Upsilon(2S)pi+pi-) = 0.85+-0.07(stat)+-0.16(syst) MeV are obtained from the observed cross sections. These values exceed by more than two orders of magnitude the previously measured partial widths for dipion transitions between lower Upsilon resonances.
Chen Kai-Feng
for the Belle Collaboration
No associations
LandOfFree
The anomalous Upsilon(1S)pi+pi- and Upsilon(2S)pi+pi- production near the Upsilon(5S) resonance 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 The anomalous Upsilon(1S)pi+pi- and Upsilon(2S)pi+pi- production near the Upsilon(5S) resonance, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The anomalous Upsilon(1S)pi+pi- and Upsilon(2S)pi+pi- production near the Upsilon(5S) resonance will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-272930