Angular analysis of the e+e- → D(*)D* process near the open-charm threshold using initial-state radiation
P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow, Russia
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Published online: 13 March 2019
We report new measurement of the exclusive e+e- → D(*)±D*∓ cross sections as a function of center-of-mass energy from the D(∗)±D∗∓ threshold up to = 6.0 GeV with initial state radiation. The analysis is based on a data sample collected by the Belle detector with an integrated luminosity of 951 fb−1. The accuracy of the cross section measurement is increased by a factor of 2 in comparison with the first Belle study. We have performed the first angular analysis of the e+e- → D∗±D∗∓ process and decomposed this exclusive cross section into three components corresponding to the different D∗ helicities.
© The Authors, published by EDP Sciences, 2019
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