A hyperon resonance decays as

PHYSICS · Multi-part · Fermi University Physics · Particle Physics & Quantum Fields · Symmetry, groups and the quark model · Symmetry, groups and the quark model

Symmetry and Flavour, Ch Parity, charge conjugation and time reversal as operators, and the CPT theorem

Problem

\Xi^{*-} \to \Lambda K^-

, with the

\Lambda

and

K^-

emitted in a relative

P

-wave,

L=1

, in the resonance's rest frame. The conventional intrinsic parities are

P(\Lambda)=+1

and

P(K^-)=-1

(the kaon is a pseudoscalar meson,

J^P=0^-

). ((a)) Write the general two-body parity rule that combines intrinsic parities with orbital angular momentum. ((b)) Evaluate the parity of the

\Lambda K^-

final state for this decay.

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