PoS - Proceedings of Science
Volume 360 - ALPS 2019 An Alpine LHC Physics Summit (ALPS2019) - Flavour physics
Angular analysis of the $e^{+}e^{-} \to D^{(*)}D^{*}$ process near the open-charm threshold using initial-state radiation at Belle
V. Zhukova
Full text: pdf
Published on: February 08, 2021
We present the new results of measurements of the exclusive
cross sections of the $e^+ e^-$ annihilation to charmed meson pairs
as a function of the center-of-mass energy from the
threshold up to $\sqrt{s}=6$ GeV using initial state radiation
technique. The analysis is based on the 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 $e^+e^- \to D^{* \pm} D^{* \mp}$
process and decomposed this exclusive cross section into three
components corresponding to the different $D^*$ helicities.
DOI: https://doi.org/10.22323/1.360.0013
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