pdgLive Home   >   LIGHT UNFLAVORED MESONS ($\mathit S$ = $\mathit C$ = $\mathit B$ = 0)   >   ${{\mathit \pi}^{\pm}}$   >   ${{\mathit \pi}}$ ELECTRIC POLARIZABILITY ${{\mathit \alpha}}_{{{\mathit \pi}}}$

${{\mathit \pi}}$ ELECTRIC POLARIZABILITY ${{\mathit \alpha}}_{{{\mathit \pi}}}$

INSPIRE   PDGID:

S008EPL

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 2015 A 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