Learn More
Received ; revised manuscript received We have studied pp annihilations at rest in liquid hydrogen into the nal state ! 0 where ! decays to 0. This reaction is dominated by the production of a 0 (980) and contributions from a 2 (1320) and b 0 1 (1235). Upper limits for the production of an axial vector h 0 1 (1380) meson and vector mesons !(1390), !(1600),(More)
  • A Abele, B Adomeit, +78 authors C Zupan
  • 2007
The annihilation channels pp!! 0 , !, ! 0 were studied with the Crystal Barrel detector at LEAR at p-momenta of 600, 1200, and 1940 MeV=c. In most cases angular distributions were measured which allowed a complete J P-analysis using the helicity formalism. The contribution of all relevant initial states could be determined. The maximal contributing angular(More)
  • A Abele, S Bischoo, +77 authors M Suuert
  • 2007
We present a measurement and partial wave analysis of the nal state K L K of pp annihilation at rest in liquid hydrogen. This reaction is important for the study of the KK decay mode of scalar resonances, in particular the isovectors a 0 (980) and a 0 (1450). The determination of the a 0 (1450) production also xes the KK coupling of the isoscalar f 0 (1500)(More)
  • Crystal Barrel, Collaboration A Abele, +76 authors B S Zou
  • 2007
The 0 momentum dependence of the decay ! + ? 0 has been measured with the Crystal Barrel detector. The analysis is based on 3230 events. The results of this independent measurement are compared to new chiral perturbation theory calculations and previous measurements. The calculation of the amplitude of the decay into three pions has been a longstanding(More)
For the acceptance of future network-based media services the technical advancement of the man-machine interface is of great importance. The Fraunhofer Institute for Systems and Innovation Research (ISI) in Karlsruhe has conducted an expert survey on different acceptance factors, on the future development of media usage behavior, on network infrastructure(More)