====== TTP00-30 Search for the CP Forbidden Decay eta to 4 pi0 ======
 
 
<hidden TTP00-30  Search for the CP Forbidden Decay eta to 4 pi0 > We report the first determination of the upper limit for the branching ratio
 of the CP forbidden decay eta to 4 pi0.  No events were observed in a sample
 of 3.0×10^7 eta decays.  The experiment was performed with the Crystal Ball
 multiphoton spectrometer installed in a separated pi- beam at the AGS
 (Alternating Gradient Synchrotron).  At the 90% confidence limit,
 B(eta to 4 pi0) <= 6.9×10^-7. 
 </hidden>
|**S. Prakhov, Hans-Martin Staudenmaier &amp; al.**  | 
|** Phys. Rev. Lett. 84 4802-4805 2000  **  |
| {{preprints:2000:ttp00-30.pdf|PDF}} {{preprints:2000:ttp00-30.ps|PostScript}}   |
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