We report measurements of the e+e− → BB¯, BB¯∗, and B∗B¯∗ cross sections at four energies, 10653, 10701, 10746 and 10805 MeV, using data collected by the Belle II experiment. We reconstruct one B meson in a large number of hadronic final states and use its momentum to identify the production process. In the first 2 – 5 MeV above B∗B¯∗ threshold, the e+e− → B∗B¯∗ cross section increases rapidly. This may indicate the presence of a pole close to the threshold.

Measurement of the energy dependence of the e+e− → $$ B\overline{B} $$, $$ B{\overline{B}}^{\ast } $$, and $$ {B}^{\ast }{\overline{B}}^{\ast } $$ cross sections at Belle II

Gabrielli, A.;Ganiev, E.;Ghosh, D.;Lanceri, L.;Manfredi, R.;Mantovano, M.;Raiz, S.;Vitale, L.;
2024-01-01

Abstract

We report measurements of the e+e− → BB¯, BB¯∗, and B∗B¯∗ cross sections at four energies, 10653, 10701, 10746 and 10805 MeV, using data collected by the Belle II experiment. We reconstruct one B meson in a large number of hadronic final states and use its momentum to identify the production process. In the first 2 – 5 MeV above B∗B¯∗ threshold, the e+e− → B∗B¯∗ cross section increases rapidly. This may indicate the presence of a pole close to the threshold.
2024
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11368/3097964
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