학술논문
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
Document Type
Working Paper
Author
Serednyakov, S. I.; Achasov, M. N.; Beloborodov, K. I.; Bogdanchikov, A. G.; Bozhenok, A. V.; Bukin, A. D.; Bukin, D. A.; Dimova, T. V.; Druzhinin, V. P.; Golubev, V. B.; Korol, A. A.; Koshuba, S. V.; Pakhtusova, E. V.; Shatunov, Yu. M.; Sidorov, V. A.; Silagadze, Z. K.; Skrinsky, A. N.; Tikhonov, Yu. A.; Vasiljev, A. V.
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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.
Comment: 4 pages, 7 figures, contribution to the proceedings of International Europhysics Conference on High Energy physics, 2005, Lisbon, Portugal
Comment: 4 pages, 7 figures, contribution to the proceedings of International Europhysics Conference on High Energy physics, 2005, Lisbon, Portugal