Observation of the Decay $K_L\to μ^+μ^- γγ$
| dc.creator | Alavi-Harati, A. | |
| dc.date | 2000-01-04 | |
| dc.date.accessioned | 2026-07-07T10:32:00Z | |
| dc.date.available | 2026-07-07T10:32:00Z | |
| dc.description | We have observed the decay $K_L\to μ^+μ^- γγ$ at the KTeV experiment at Fermilab. This decay presents a formidable background to the search for new physics in $K_L\toπ^0μ^+μ^-$. The 1997 data yielded a sample of 4 signal events, with an expected background of 0.155 $\pm$ 0.081 events. The branching ratio is ${\mathcal B}(K_L\to μ^+μ^- γγ$) $ = (10.4^{+7.5}_{-5.9} {\rm (stat)} \pm 0.7 {\rm (sys)})\times 10^{-9}$ with $m_{γγ} \geq 1 {\rm MeV/c}^2$, consistent with a QED calculation which predicts $(9.1\pm 0.8)\times 10^{-9}$. | |
| dc.description | See also the paper "Search for the Decay $K_L \to π^0 μ^+ μ^-$", also by the KTeV collaboration | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0001005 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0001005 | |
| dc.identifier | Phys.Rev.D62:112001,2000 | |
| dc.identifier | doi:10.1103/PhysRevD.62.112001 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/178611 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Observation of the Decay $K_L\to μ^+μ^- γγ$ | |
| dc.type | text |