Searching for eta to 3 gamma decay
| dc.creator | The KLOE Collaboration | |
| dc.creator | Aloisio, A. | |
| dc.date | 2003-07-16 | |
| dc.date | 2003-07-17 | |
| dc.date.accessioned | 2026-07-07T03:35:58Z | |
| dc.date.available | 2026-07-07T03:35:58Z | |
| dc.description | Data collected by the KLOE experiment in years 2001/2002 for a total integrated luminosity of 410 pb$^{-1}$, corresponding to 17 million of produced $η$'s from the $Φ\to ηγ$ radiative decay, have been analyzed to look for the C-violating decay $η\toγγγ$. The signal is searched in events with 4 photons in the final state by using the spectrum of the most energetic photon. The background is evaluated from the data themself, doing a fifth degree polynomial fit outside the signal region, and extrapolating inside it. No signal has been observed and taking into account a selection efficiency $ε= 20.3 %$ we get from a likelihood fit Br$(η\toγγγ) \le 1.6\times10^{-5}$ at 95% CL. The procedure has a systematic ambiguity at the 35 % level. | |
| dc.description | Contributed paper to EPS 2003 and LP 2003 | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0307042 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0307042 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/37567 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Searching for eta to 3 gamma decay | |
| dc.type | text |