We report the first measurement of the exclusive cross sections e+e− → BB¯ , e+e− → BB¯ ∗, and e+e− → B∗B¯ ∗ in the energy range from 10.63 GeV to 11.02 GeV. The B mesons are fully reconstructed in a large number of hadronic final states and the three channels are identified using a beam-constrained-mass variable. The shapes of the exclusive cross sections show oscillatory behavior with several maxima and minima. The results are obtained using data collected by the Belle experiment at the KEKB asymmetric-energy e+e− collider. [Figure not available: see fulltext.]
Measurement of the energy dependence of the e + e − → BB¯ , BB¯ ∗ and B∗B¯∗ exclusive cross sections / Belle, Collaboration; Campajola, M.; De Nardo, G.; Di Capua, F.; Merola, M.; Pardi, S.; Russo, G.; Et, Al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2021:6(2021). [10.1007/JHEP06(2021)137]
Measurement of the energy dependence of the e + e − → BB¯ , BB¯ ∗ and B∗B¯∗ exclusive cross sections
Campajola M.;De Nardo G.;Di Capua F.;Merola M.;Pardi S.;Russo G.;
2021
Abstract
We report the first measurement of the exclusive cross sections e+e− → BB¯ , e+e− → BB¯ ∗, and e+e− → B∗B¯ ∗ in the energy range from 10.63 GeV to 11.02 GeV. The B mesons are fully reconstructed in a large number of hadronic final states and the three channels are identified using a beam-constrained-mass variable. The shapes of the exclusive cross sections show oscillatory behavior with several maxima and minima. The results are obtained using data collected by the Belle experiment at the KEKB asymmetric-energy e+e− collider. [Figure not available: see fulltext.]I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
