Abstract
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.
Original language | English |
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Pages (from-to) | 172-175 |
Number of pages | 4 |
Journal | Physical Review Letters |
Volume | 64 |
Issue number | 2 |
DOIs | |
State | Published - 1990 |