Utilizing a dataset of 6.7 fb−1 from electron-positron collisions recorded by the BESIII detector at the BEPCII storage ring, a search is conducted for the processes eþe− → φχc0 and φηc2(1D) across center-of-mass energies from 4.47 to 4.95 GeV. In the absence of any significant signals, upper limits are set. These include limits on the dressed cross sections for eþe− → φχc0, as well as the product of the dressed cross section for eþe− → φηc2(1D) and a sum of five branching fractions. Furthermore, the product of the electronic width of Y(4660) and the branching fraction of the Y(4660)→φχc0 is determined to be <0.35 eV at the 90% confidence level.

Search for e + e − → φχ c0 and φηc2(1D) at center-of-mass energies from 4.47 to 4.95 GeV

Garzia, I.;
2025

Abstract

Utilizing a dataset of 6.7 fb−1 from electron-positron collisions recorded by the BESIII detector at the BEPCII storage ring, a search is conducted for the processes eþe− → φχc0 and φηc2(1D) across center-of-mass energies from 4.47 to 4.95 GeV. In the absence of any significant signals, upper limits are set. These include limits on the dressed cross sections for eþe− → φχc0, as well as the product of the dressed cross section for eþe− → φηc2(1D) and a sum of five branching fractions. Furthermore, the product of the electronic width of Y(4660) and the branching fraction of the Y(4660)→φχc0 is determined to be <0.35 eV at the 90% confidence level.
2025
Ablikim, M.; Achasov, M.  n.; Adlarson, P.; Afedulidis, O.; Ai, X.  c.; Aliberti, R.; Amoroso, A.; An, Q.; Bai, Y.; Bakina, O.; Balossino, I.; Ban, Y....espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2597910
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