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$({\mathit m}_{{{\mathit \pi}^{+}}}–{\mathit m}_{{{\mathit \pi}^{-}}})/{\mathit m}_{\mathrm {average}}$

INSPIRE   PDGID:

S008DM

A test of $\mathit CPT$ invariance.

VALUE ($ 10^{-4} $) DOCUMENT ID TECN $2$ $\pm5$ AYRES 1971 CNTR

Conservation Laws:

$\mathit CPT$ INVARIANCE

References:

AYRES 1971 PR D3 1051 Measurements of the Lifetimes of Positive and Negative Pions Also PR 157 1288 Comparison of ${{\mathit \pi}^{+}}$ and ${{\mathit \pi}^{-}}$ Lifetimes Also PRL 21 261 Precise Comparison of ${{\mathit \pi}^{+}}$ and ${{\mathit \pi}^{-}}$ Lifetimes Also Thesis UCRL 18369 Comparison of ${{\mathit \pi}^{+}}$ and ${{\mathit \pi}^{-}}$ Lifetimes as a Test of $\mathit CPT$ Invariance Also PRL 23 1267 Charged Pion Lifetime and a Limit on a Fundamental Length