Polarization-transfer measurement to a large-virtuality bound proton in the deuteron

Abstract

Possible differences between free and bound protons may be observed in the ratio of polarization-transfer components, $P_x^{\prime }/P_z^{\prime }$. We report the measurement of $P_x^{\prime }/P_z^{\prime }$, in the ${}^2\text{H}(\vec{e},e^{\prime }\vec{p})n$ reaction at low and high missing momenta. Observed increasing deviation of $P_x^{\prime }/P_z^{\prime }$ from that of a free proton as a function of the virtuality, similar to that observed in \hefour, indicates that the effect in nuclei is due to the virtuality of the knock-out proton and not due to the average nuclear density. The measured differences from calculations assuming free-proton form factors ($\sim 10\%$), may indicate in-medium modifications.

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Cited by in corpus (3)

• Nucleon-Nucleon Correlations, Short-lived Excitations, and the Quarks Within
• Quasi-elastic polarization-transfer measurements on the deuteron in anti-parallel kinematics
• Measurements of the induced polarization in the quasi-elastic $A(e,e^{\prime }\vec{p})$ process in non-coplanar kinematics