Using 9.0 fb−1 of e+e− collision data collected at center-of-mass energies from 4.178 to 4.278 GeV with the BESIII detector at the BEPCII collider, we perform the first search for the radiative transition χc1(3872) → γψ2(3823). No signal is observed and the upper limit on the ratio of branching fractions B(χc1(3872) → γψ2(3823); ψ2(3823) → γχc1)=B(χc1(3872) → π+π−J/ψ) is set at 0.075 at the 90% confidence level. Our result contradicts theoretical predictions under the assumption that the χc1(3872) is the pure charmonium state χc1(2P).

Search for the radiative transition χc1(3872) → γψ_2(3823)

Garzia, I.;Gramigna, S.;
2024

Abstract

Using 9.0 fb−1 of e+e− collision data collected at center-of-mass energies from 4.178 to 4.278 GeV with the BESIII detector at the BEPCII collider, we perform the first search for the radiative transition χc1(3872) → γψ2(3823). No signal is observed and the upper limit on the ratio of branching fractions B(χc1(3872) → γψ2(3823); ψ2(3823) → γχc1)=B(χc1(3872) → π+π−J/ψ) is set at 0.075 at the 90% confidence level. Our result contradicts theoretical predictions under the assumption that the χc1(3872) is the pure charmonium state χc1(2P).
2024
Ablikim, M.; Achasov, M.  N.; Adlarson, P.; Afedulidis, O.; Ai, X.  C.; Aliberti, R.; Amoroso, A.; An, M.  R.; An, Q.; Bai, Y.; Bakina, O.; Balossino,...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2569731
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