Search for CP Violation in Charged-Xi and Lambda Hyperon Decays

Physical review letters（2004）

Cited 39|Views30

Abstract

The novel sources of CP violation observed in charged χ and λ hyperon decays were investigated. A comparison of the p and p 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 χ+ 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.

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Key words

Supersymmetry

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