# STUDY OF ELASTIC PI- PI- SCATTERING IN PI- N ---> P PI- PI- REACTION AT 21-GEV/C

Authors
Publication Date
Jan 01, 1982
Source
INSPIRE-HEP
Keywords
Data for reaction $\pi^-{\rm n} \to {\rm p}\pi^-\pi^-$ at 21 GeV/$c$ are analysed in order to extract information on elastic $\pi^-\pi^-$ scattering. $\sigma^{\pi^-\pi^-}$ is found to decrease with energy from 5 mb at $s_{\pi\pi}\simeq 2$ GeV$^2$ to value below 1 mb for $s_{\pi\pi}> 8$ GeV$^2$. The data are also compared with predictions of the modified Drell--Hiida--Deck models and reasonable agreement is found.