ISSN:
1434-6052
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract We have studied the ππ andK $$\bar K$$ systems centrally produced in proton proton collisions at 300 GeV/c and π+/p proton collisions at 85 GeV/c using the CERN Ω spectrometer. Clear evidence forS */f o(975) production is observed. An analysis performed on the π+ π− mass spectrum in the 1.0 GeV region, using a coupled channel formalism, shows that it is possible to describe theS */f o(975) effect with one single resonance once interference of theS */f o(975) with theS-wave background is introduced. The resultingS */f o(975) parameters arem o =979±4MeV,g π =0.28±0.04,g K =0.56±0.18 corresponding to a pole position on sheet II at (1001±2)−i(36±4) MeV. Evidence is also found for a structure having a mass of 1472±12 MeV and a width of 195±33 MeV.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01548557