Measurement of the e + e − → K S 0 K L 0 π 0 cross sections from s = 2. 000 to 3. 080 GeV

Journal article

Based on e+e− collision data collected at center-of-mass energies from 2.000 to 3.080 GeV by the BESIII detector at the BEPCII collider, a partial wave analysis is performed for the process e+e− → KS0KL0π0. The results allow the Born cross sections of the process e+e− → KS0KL0π0, as well as its subprocesses e+e− → K∗(892)0K¯0 and K2∗(1430)0K¯0 to be measured. The Born cross sections for e+e− → KS0KL0π0 are consistent with previous measurements by BaBar, but with substantially improved precision. The Born cross section lineshape of the process e+e−K∗(892)0K¯0 is consistent with a vector meson state around 2.2 GeV with a significance of 3.2σ. A Breit-Wigner fit determines its mass as MY = (2164.7 ± 9.1 ± 3.1) MeV/c2 and its width as ΓY = (32.4 ± 21.0 ± 1.8) MeV.

Authors: Ablikim, M; Achasov, MN; Adlarson, P; Ai, XC; Aliberti, R

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: Springer
• Journal: Journal of High Energy Physics
• Volume: 2024
• Issue: 1
• Article number: 180
• Publication date: 2024-01-30
• Acceptance date: 2024-01-15
• DOI: 10.1007/jhep01(2024)180
• EISSN: 1029-8479
• ISSN: 1126-6708
• Language: English
• Keywords: e+-e− Experiments; Particle and Resonance Production; Spectroscopy