摘要
The TPC/Two-Gamma facility at the SLAC e+e- storage ring PEP was used to study the reactions * and *e. The * and e* transition form factors were measured as functions of Q2, the negative of the invariant mass squared of the tagged photon, in the range 0.1<Q2<7 GeV2. These determinations of the electromagnetic structure of the and e mesons are consistent with both vector-meson dominance and QCD. They also provide new measurements of the pseudoscalar mixing angle and decay constants.
原文 | ???core.languages.en_GB??? |
---|---|
頁(從 - 到) | 172-175 |
頁數 | 4 |
期刊 | Physical Review Letters |
卷 | 64 |
發行號 | 2 |
DOIs | |
出版狀態 | 已出版 - 1990 |