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

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.

Published in:
Physical Review Letters, 93, 26 I, 262001
Other identifiers:
Scopus: 2-s2.0-37649030015

 Record created 2010-11-05, last modified 2018-09-13

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