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
S. I. Serednyakov, M. N. Achasov, K. I. Beloborodov, A. G. Bogdanchikov, A. V. Bozhenok, A. D. Bukin, D. A. Bukin, T. V. Dimova, V. P. Druzhinin, V. B. Golubev, A. A. Korol, S. V. Koshuba, E. V. Pakhtusova, Yu. M. Shatunov, V. A. Sidorov, Z. K. Silagadze, A. N. Skrinsky, Yu. A. Tikhonov, A. V. Vasiljev
Abstract
New results of the e+e- -> pi+pi-, K+K-, KSKL, 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.
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