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- Title
CP INVARIANCE STUDY OF Jφ→ΛΛ AND Λ NONLEPTONIC DECAYS IN HELICITY FRAME.
- Authors
BIN ZHONG; GUANGRUI LIAO
- Abstract
We present the joint helicity amplitudes for Jφ→ΛΛ,Λ(Λ) decays to different final states in the helicity frame. Two observables to search for CP violation in Jφ→ΛΛ can be expressed with the information of helicity angles of baryon and anti-baryon. Four decay parameters of Λ and Λ, namely, α-; α+; α0 and α0, can be obtained with the joint helicity amplitude equations by the likelihood fit method. With the data sample of 1010 J/φ decays accumulated by BESIII, the precision of the measurements is estimated to be about 10-3.
- Subjects
CP violation; SYMMETRY (Physics); NON-leptonic decays; HELICITY of nuclear particles; BARYONS
- Publication
Acta Physica Polonica B, 2015, Vol 46, Issue 12, p2459
- ISSN
0587-4254
- Publication type
Article
- DOI
10.5506/APhysPolB.46.2459