Prefer a chat interface with context about you and your work?
Measurement of the generalized form factors near threshold via<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mi>γ</mml:mi><mml:mo>*</mml:mo></mml:msup><mml:mi>p</mml:mi><mml:mo>→</mml:mo><mml:mi>n</mml:mi><mml:msup><mml:mi>π</mml:mi><mml:mo>+</mml:mo></mml:msup></mml:mrow></mml:math>at high<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>Q</mml:mi><mml:mn>2</mml:mn></mml:msup></mml:math>
We report the first extraction of the pion-nucleon multipoles near the production threshold for the $n{\ensuremath{\pi}}^{+}$ channel at relatively high momentum transfer (${Q}^{2}$ up to 4.2 ${\mathrm{GeV}}^{2}$). The dominance of the $s$-wave transverse multipole (${E}_{0+}$), expected in this region, allowed us to access the generalized form factor ${G}_{1}$ within the …