# ${{\boldsymbol n}}$ CHARGE INSPIRE search

See also $\vert {{\mathit q}_{{p}}}+{{\mathit q}_{{e}}}\vert /{{\mathit e}}$'' in the proton Listings.
VALUE ($10^{-21}$ $\mathit e$) DOCUMENT ID TECN  COMMENT
$\bf{ -0.2 \pm0.8}$ OUR AVERAGE
$-0.1$ $\pm1.1$ 1
 2011
Neutrality of SF$_{6}$
$-0.4$ $\pm1.1$ 2
 1988
Cold ${{\mathit n}}$ deflection
• • • We do not use the following data for averages, fits, limits, etc. • • •
$-15$ $\pm22$ 3
 1982
CNTR Cold ${{\mathit n}}$ deflection
1  As a limit, this BRESSI 2011 value is $<1 \times 10^{-21}{{\mathit e}}$.
2  The BAUMANN 1988 error $\pm1.1$ gives the 68$\%$ CL limits about the the value $-0.4$.
3  The GAEHLER 1982 error $\pm22$ gives the 90$\%$ CL limits about the the value $-15$.
References:
 BRESSI 2011
PR A83 052101 Testing the Neutrality of Matter by Acoustic Means in a Spherical Resonator
 BAUMANN 1988
PR D37 3107 Experimental Limit for Charge of the Free Neutron
 GAEHLER 1982
PR D25 2887 Experimental Limit for the Charge of the Free Neutron