The processes e+e− → Δ++Δ ̄ −− and eþe− → Δ++p ̄ π− + c:c: are studied for the first time with 179 pb−1 of e+e− annihilation data collected with the BESIII detector at center-of-mass energies from 2.3094 to 2.6464 GeV. No significant signal for the e+e− → Δ++Δ ̄ −− process is observed and the upper limit of the Born cross section is estimated at each energy point. For the process e+e− → Δ++p ̄ π− + c:c:, a significant signal is observed at center-of-mass energies near 2.6454 GeV and the corresponding Born cross section is reported.
Production of the doubly charged Δ baryon in e+e− annihilation at energies from 2.3094 to 2.6464 GeV
Garzia, I.;Scodeggio, M.;
2023
Abstract
The processes e+e− → Δ++Δ ̄ −− and eþe− → Δ++p ̄ π− + c:c: are studied for the first time with 179 pb−1 of e+e− annihilation data collected with the BESIII detector at center-of-mass energies from 2.3094 to 2.6464 GeV. No significant signal for the e+e− → Δ++Δ ̄ −− process is observed and the upper limit of the Born cross section is estimated at each energy point. For the process e+e− → Δ++p ̄ π− + c:c:, a significant signal is observed at center-of-mass energies near 2.6454 GeV and the corresponding Born cross section is reported.File in questo prodotto:
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