Energy dependence of the He-4(pi( ),pi(-)) total cross section
J Grater, R Bilger, H Clement, R Meier, GJ Wagner, E Friedman, M Schepkin, PA Amaudruz, L Felawka, D Ottewell, GR Smith, A Ambardar, GJ Hofman, M Kermani, G Tagliente, F Bonutti, P Camerini, N Grion, R Rui, J Clark Show all
PHYSICAL REVIEW C | AMER PHYSICAL SOC | Published : 1998
The total cross section of the [Formula Presented] reaction was measured for [Formula Presented] kinetic energies ranging from 70 to 130 MeV using the CHAOS spectrometer at TRIUMF and a liquid [Formula Presented] target. Around [Formula Presented] total cross sections exceed conventional model predictions by a factor of 3, whereas at [Formula Presented] and for [Formula Presented] the data are consistent with these calculations. An attempt is made to understand this behavior by assuming the production of the hypothetical [Formula Presented] dibaryon. © 1998 The American Physical Society.