A Measurement of the Branching Ratio of $K_L \to e^+e^-γγ$
| dc.creator | The KTeV Collaboration | |
| dc.creator | Alavi-Harati, A. | |
| dc.date | 2000-10-23 | |
| dc.date.accessioned | 2026-07-07T10:32:05Z | |
| dc.date.available | 2026-07-07T10:32:05Z | |
| dc.description | We report on a study of the decay $K_L \to e^+e^-γγ$ carried out as a part of the KTeV/E799 experiment at Fermilab. The 1997 data yielded a sample of 1543 events, including an expected background of $56 \pm 8$ events. An effective form factor was determined from the observed distribution of the $e^+e^-$ invariant mass. Using this form factor in the calculation of the detector acceptance, the branching ratio was measured to be ${\mathcal B}(K_L \to e^+ e^- γγ, E^*_γ> 5 {MeV}) = (5.84 \pm 0.15 {\rm ~(stat)} \pm 0.32 {\rm ~(sys)})\times 10^{-7}$. | |
| dc.description | 5 pages, 4 figures | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0010059 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0010059 | |
| dc.identifier | Phys.Rev.D64:012003,2001 | |
| dc.identifier | doi:10.1103/PhysRevD.64.012003 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/178637 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | A Measurement of the Branching Ratio of $K_L \to e^+e^-γγ$ | |
| dc.type | text |