# Complete Set of Polarization Transfer Observables for the $^{12}{\rm C}(p,n)$ Reaction at 296 MeV and 0$^{\circ}$

## TL;DR

This study measures a complete set of polarization transfer observables for the $^{12}{
m C}(p,n)$ reaction at 296 MeV and 0 degrees, revealing insights into spin-dipole resonance and transition strengths.

## Contribution

It provides the first comprehensive polarization transfer data for this reaction at these energies and angles, enhancing understanding of spin-isospin excitations.

## Key findings

- Spin-dipole resonance at 7 MeV has more $2^-$ strength than $1^-$.
- Predominance of spin-flip and unnatural-parity transitions in the continuum.
- Exchange tensor interaction effects at high momentum transfer are discussed.

## Abstract

A complete set of polarization transfer observables has been measured for the $^{12}{\rm C}(p,n)$ reaction at $T_p=296 {\rm MeV}$ and $\theta_{\rm lab}=0^{\circ}$. The total spin transfer $\Sigma(0^{\circ})$ and the observable $f_1$ deduced from the measured polarization transfer observables indicate that the spin--dipole resonance at $E_x \simeq 7 {\rm MeV}$ has greater $2^-$ strength than $1^-$ strength, which is consistent with recent experimental and theoretical studies. The results also indicate a predominance of the spin-flip and unnatural-parity transition strength in the continuum. The exchange tensor interaction at a large momentum transfer of $Q \simeq 3.6 {\rm fm}^{-1}$ is discussed.