We search for the eþe− → γχbJ (J ¼ 0, 1, 2) processes at center-of-mass energies ps ¼ 10.653, 10.701, ffiffi 10.746, and 10.804 GeV. These data were collected with the Belle II detector at the SuperKEKB collider and correspond to 3.5, 1.6, 9.8, and 4.7 fb−1 of integrated luminosity, respectively. We set upper limits at the 90% confidence level on the Born cross sections for eþe− → γχbJ at each center-of-mass energy pffiffi s near 10.746 GeV. The upper limits at 90% confidence level on the Born cross sections for eþe− → γχb1 are significantly smaller than the corresponding measured values for eþe− → ωχb1 and eþe− → πþπ−ϒð2SÞ at ffiffi ps ¼ 10.746 GeV.

Abumusabh, M., Adachi, I., Aggarwal, L., Ahmed, H., Ahn, Y., Aihara, H., et al. (2026). Search for 𝑒+⁢𝑒− →𝛾⁢𝜒𝑏⁢𝐽 (𝐽=0, 1, 2) near √𝑠 =10.746  GeV at Belle II. PHYSICAL REVIEW D, 113(5), 1-8 [10.1103/2rv3-s3w7].

Search for 𝑒+⁢𝑒− →𝛾⁢𝜒𝑏⁢𝐽 (𝐽=0, 1, 2) near √𝑠 =10.746  GeV at Belle II

Di Canto A.;
2026

Abstract

We search for the eþe− → γχbJ (J ¼ 0, 1, 2) processes at center-of-mass energies ps ¼ 10.653, 10.701, ffiffi 10.746, and 10.804 GeV. These data were collected with the Belle II detector at the SuperKEKB collider and correspond to 3.5, 1.6, 9.8, and 4.7 fb−1 of integrated luminosity, respectively. We set upper limits at the 90% confidence level on the Born cross sections for eþe− → γχbJ at each center-of-mass energy pffiffi s near 10.746 GeV. The upper limits at 90% confidence level on the Born cross sections for eþe− → γχb1 are significantly smaller than the corresponding measured values for eþe− → ωχb1 and eþe− → πþπ−ϒð2SÞ at ffiffi ps ¼ 10.746 GeV.
2026
Abumusabh, M., Adachi, I., Aggarwal, L., Ahmed, H., Ahn, Y., Aihara, H., et al. (2026). Search for ��+⁢��− →��⁢����⁢�� (��=0, 1, 2) near √�� =10.746  GeV at Belle II. PHYSICAL REVIEW D, 113(5), 1-8 [10.1103/2rv3-s3w7].
Abumusabh, M.; Adachi, I.; Aggarwal, L.; Ahmed, H.; Ahn, Y.; Aihara, H.; Akopov, N.; Alghamdi, S.; Alhakami, M.; Aloisio, A.; Althubiti, N.; Amos, K.;...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/1084192
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