Search for CP violation in charged-Ξ and Λ hyperon decays

Academic Article


  • The novel sources of CP violation observed in charged χ and λ hyperon decays were investigated. A comparison of the p and p̄ angular distributions in the hyperon decays was made using a subset of the data from the HyperCP experiment (E871) at Fermilab. A possible source of bias was found to be a momentum-dependent differential loss of events due to interactions of the χ- and χ̄+ decay products. The obtained result was observed to be stable with respect to time, χ momentum, and secondary-beam intensity, The results show that differences between the χ- and χ+ production angles could cause a bias due to production polarization differences.
  • Authors

    Published In

    Digital Object Identifier (doi)

    Author List

  • Holmstrom T; Leros N; Burnstein RA; Chakravorty A; Chan A; Chen YC; Choong WS; Clark K; Dukes EC; Durandet C
  • Volume

  • 93
  • Issue

  • 26 I