Abstract
We have observed the decay of the (2S) into the (1S), obtaining a branching ratio of 19.1±3.1±2.9% for the mode (2S)→π+π-+(1S). The di-pion mass spectrum peaks at large invariant mass, and the angular distribution of the di-pion system is consistent with s-wave production.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1181-1184 |
| Number of pages | 4 |
| Journal | Physical review letters |
| Volume | 46 |
| Issue number | 18 |
| DOIs | |
| State | Published - 1981 |
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