Using e+e- collision data at 13 center-of-mass energies ranging from 4.600 to 4.951 GeV collected with the BESIII detector, we conduct the first search for the e+e- -> KS0KS0hc process and investigate the resonance structures in the cross section line shape. No significant signal is observed, and the upper limits of the Born cross sections at each center-of-mass energy are presented. The ratio sigma e+e--> KS0KS0hc sigma e+e--> KS0KS0J/psi is determined to be 0.15 +/- 0.22. This result indicates that if vector states exist in this energy region, their decay into hc is significantly suppressed compared to decays into J/psi.
Search for e+e-→KS0KS0hc
A. Amoroso;F. Bianchi;A. Bortone;M. Destefanis;F. De Mori;M. Greco;M. Maggiora;S. Marcello;S. Sosio;S. Spataro;
2025-01-01
Abstract
Using e+e- collision data at 13 center-of-mass energies ranging from 4.600 to 4.951 GeV collected with the BESIII detector, we conduct the first search for the e+e- -> KS0KS0hc process and investigate the resonance structures in the cross section line shape. No significant signal is observed, and the upper limits of the Born cross sections at each center-of-mass energy are presented. The ratio sigma e+e--> KS0KS0hc sigma e+e--> KS0KS0J/psi is determined to be 0.15 +/- 0.22. This result indicates that if vector states exist in this energy region, their decay into hc is significantly suppressed compared to decays into J/psi.| File | Dimensione | Formato | |
|---|---|---|---|
|
JHEP05(2025)144.pdf
Accesso aperto
Tipo di file:
PDF EDITORIALE
Dimensione
775 kB
Formato
Adobe PDF
|
775 kB | Adobe PDF | Visualizza/Apri |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.



