Abstract
The Crystal Ball detector has been used at the DORIS II storage ring at DESY to study the reaction γγ→π0π0π0 in the π0π0π0 invariant mass range from 850 MeV/c2 to 2600 MeV/c2. An enhancement around 1750 MeV/c2 is attributed to the π2(1670) resonance. The observed π0π0 invariant mass distribution and the π0 angular distributions are consistent with those expected for the decay chain π2→π0f2(1270)→π0π0π0. From our measurements we find the following resonance parameters: two photon partial width {Mathematical expression}, mass M(π2)=(1742±31±49)MeV/c2. and total width {Mathematical expression}.
Original language | English (US) |
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Pages (from-to) | 561-568 |
Number of pages | 8 |
Journal | Zeitschrift für Physik C Particles and Fields |
Volume | 48 |
Issue number | 4 |
DOIs | |
State | Published - Dec 1990 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)