Measurement of $\sigma_{\mathrm{ABS}}$ and $\sigma_{\mathrm{CX}}$ of   $\pi^+$ on carbon by DUET
  The DUET Collaboration reports on the measurements of the absorption ($\sigma_{\mathrm{ABS}}$) and charge exchange ($\sigma_{\mathrm{CX}}$) cross sections of positively charged pions on carbon nuclei for the momentum range 201.6 MeV$/c$ to 295.1 MeV$/c$. The uncertainties on the absorption and charge exchange cross sections are $\sim$9.5\% and $\sim$18\%, respectively. The results are in good agreement with previous experiments. A covariance matrix correlating the 5 $\sigma_{\mathrm{ABS}}$ and 5 $\sigma_{\mathrm{CX}}$ measured data points is also reported 
E. S. Pinzon Guerra, S. Bhadra, S. Berkman, C. Cao, P. de Perio, Y.   Hayato, K. Ieki, M. Ikeda, Y. Kanazawa, J. Kim, P. Kit...
hep-ex nucl-ex physics.ins-det