Abstract
The cross sections of the process eþe− → K0SK0
L are measured at fifteen center-of-mass energies ffiffi
s p from 2.00 to 3.08 GeV with a total integrated luminosity of 582 pb−1 and using the BESIII detector at the Beijing Electron Positron Collider. The results are found to be consistent with those obtained by BABAR. A resonant structure around 2.2 GeV is observed, with a mass and width of 2273.7 5.7 19.3 MeV=c2 and 86 44 51 MeV, respectively, where the first uncertainties are statistical and the second ones are systematic. The product of its radiative width (Γeþe− ) with its branching fraction to K0 SK0 L (BrK0 SK0 L) is 0.9 0.6 0.7 eV.
L are measured at fifteen center-of-mass energies ffiffi
s p from 2.00 to 3.08 GeV with a total integrated luminosity of 582 pb−1 and using the BESIII detector at the Beijing Electron Positron Collider. The results are found to be consistent with those obtained by BABAR. A resonant structure around 2.2 GeV is observed, with a mass and width of 2273.7 5.7 19.3 MeV=c2 and 86 44 51 MeV, respectively, where the first uncertainties are statistical and the second ones are systematic. The product of its radiative width (Γeþe− ) with its branching fraction to K0 SK0 L (BrK0 SK0 L) is 0.9 0.6 0.7 eV.
| Original language | English |
|---|---|
| Article number | 092014 |
| Number of pages | 11 |
| Journal | Physical Review D |
| Volume | 104 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 1-Nov-2021 |