Using data samples collected by the BESIII detector operating at the BEPCII storage ring, we measure the eþe− → K0SK`π∓ Born cross sections at center-of-mass energies between 3.8 and 4.6 GeV, corresponding to a luminosity of about 5.0 fb−1. The results are compatible with the BABAR measurements, but with the precision significantly improved. A simple 1=sn dependence for the continuum process can describe the measured cross sections, but a better fit is obtained by an additional resonance near 4.2 GeV, which could be an excited charmonium or a charmoniumlike state.

Precision measurements of the e+e−→KS0K±π∓ Born cross sections at center-of-mass energies between 3.8 and 4.6 GeV

Cibinetto, G.;Farinelli, R.;Garzia, I.;Mezzadri, G.;Savrié, M.;
2019

Abstract

Using data samples collected by the BESIII detector operating at the BEPCII storage ring, we measure the eþe− → K0SK`π∓ Born cross sections at center-of-mass energies between 3.8 and 4.6 GeV, corresponding to a luminosity of about 5.0 fb−1. The results are compatible with the BABAR measurements, but with the precision significantly improved. A simple 1=sn dependence for the continuum process can describe the measured cross sections, but a better fit is obtained by an additional resonance near 4.2 GeV, which could be an excited charmonium or a charmoniumlike state.
2019
Ablikim, M.; Achasov, M.  N.; Ahmed, S.; Albrecht, M.; Alekseev, M.; Amoroso, A.; An, F.  F.; An, Q.; Bai, Y.; Bakina, O.; Baldini Ferroli, R.; Ban, Y...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2403873
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