($\vert {\mathit q_{{{\overline{\mathit p}}}}\over {\mathit m}_{{{\overline{\mathit p}}}}}\vert -{\mathit q_{p}\over {\mathit m}_{{{\mathit p}}}})/{\mathit q_{{{\mathit p}}}\over {\mathit m}_{{{\mathit p}}}}$
INSPIRE search
A test of $\mathit CPT$ invariance. Taken from the ${{\overline{\mathit p}}}/{{\mathit p}}$ charge-to-mass ratio, above.
