${{\boldsymbol \pi}}$ ELECTRIC POLARIZABILITY ${{\boldsymbol \alpha}}_{{{\boldsymbol \pi}}}$ INSPIRE search

See HOLSTEIN 2014 for a general review on hadron polarizability.
VALUE ($ 10^{-4} $ fm${}^{3}$) EVTS DOCUMENT ID TECN  COMMENT
$2.0$ $\pm0.6$ $\pm0.7$ 63k 1
ADOLPH
2015A
SPEC ${{\mathit \pi}^{-}}$ ${{\mathit \gamma}}$ $\rightarrow$ ${{\mathit \pi}^{-}}{{\mathit \gamma}}$ Compton scatt.
1  Value is derived assuming ${{\mathit \alpha}_{{\pi}}}$ = $−{{\mathit \beta}_{{\pi}}}$.
  References:
ADOLPH 2015A
PRL 114 062002 Measurement of the Charged-Pion Polarizability