New results on e+e- -> hadrons exclusive cross sections from experiments with SND detector at VEPP-2M e+e- collider in the energy range sqrt(s)=0.4-1.4 GeV
/ Authors
S. Serednyakov, M. Achasov, K. Beloborodov, A. Bogdanchikov, A. Bozhenok, A. Bukin, D. Bukin, T. Dimova, V. Druzhinin, V. Golubev
and 9 more authors
A. Korol, S. Koshuba, E. Pakhtusova, Y. Shatunov, V. Sidorov, Z. Silagadze, A. Skrinsky, Y. Tikhonov, A. Vasiljev
/ Abstract
New results of the e+e- -> pi+pi-, K+K-, K_SK_L, pi0/gamma, eta0/gamma processes cross section measurements are presented. The results are based on the 30 pb^-1 data, accumulated by SND detector at VEPP-2M e+e- collider in the energy range sqrt(s)=0.4-1.4 GeV during 1995-2000 years. The comparison with existing experimental data shows that the measurement accuracy is close to or better than the world average. For the e+e- -> pi+pi- process the accuracy is about 0.01. This is important for calculation of hadronic contribution into the muon anomalous magnetic moment.
Journal: arXiv: High Energy Physics - Experiment