Using initial-state radiation events from a total integrated luminosity of 11.957 fb−1 of eþe− collision data collected at center-of-mass energies between 3.773 and 4.258 GeV with the BESIII detector at BEPCII, the cross section for the process eþe− → ΛΛ ̄ is measured in 16 ΛΛ ̄ invariant mass intervals from the production threshold up to 3.00 GeV=c2. The results are consistent with previous results from BABAR and BESIII, but with better precision and with narrower ΛΛ ̄ invariant mass intervals than BABAR.
Measurement of the e+e−→ΛΛ¯ cross section from threshold to 3.00 GeV using events with initial-state radiation
Garzia, I.;Scodeggio, M.;
2023
Abstract
Using initial-state radiation events from a total integrated luminosity of 11.957 fb−1 of eþe− collision data collected at center-of-mass energies between 3.773 and 4.258 GeV with the BESIII detector at BEPCII, the cross section for the process eþe− → ΛΛ ̄ is measured in 16 ΛΛ ̄ invariant mass intervals from the production threshold up to 3.00 GeV=c2. The results are consistent with previous results from BABAR and BESIII, but with better precision and with narrower ΛΛ ̄ invariant mass intervals than BABAR.File in questo prodotto:
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