Looking at {CP} Invariance and Quantum Mechanics in $J/\psi \to \Lambda \bar{\Lambda}$ Decay

Tixier, M.H.; Ajaltouni, Z.; Falvard, A.; Jousset, J.; Michel, B.; Montret, J.C.; Pallin, D.; Antonelli, A.; Baldini, R.; Augustin, J.E.

doi:10.1016/0370-2693(88)91809-6

Looking at {CP} Invariance and Quantum Mechanics in $J/\psi \to \Lambda \bar{\Lambda}$ Decay

DM2

Collaboration

•

M.H. Tixier
(
- Clermont-Ferrand U.
)

May, 1988

5 pages

Published in:

Phys.Lett.B 212 (1988) 523-527

Published: 1988

DOI:

10.1016/0370-2693(88)91809-6

PDG:

\alpha _{+}

FOR

{{\overline{\mathit \Lambda}}}

\rightarrow

{{\overline{\mathit p}}}{{\mathit \pi}^{+}}

Report number:

LAL-88-13

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Abstract: (Elsevier)

The J /Ψ→Λ Λ → p π − p π + decay is used to test the CP invariance in the Λ hyperon decays by measuring A=(α Λ +α Λ )/(α Λ −α Λ ) where α Λ (α Λ ) is the decay asymmetry parameter asymmetry parameter of the Λ( Λ ) . The obtained value A =0.01±0.10 is in agreement with CP invariance. The used formalism would permit to check quantum mechanics, assuming CP invariance.

ELECTRON POSITRON: COLLIDING BEAMS
COLLIDING BEAMS: ELECTRON POSITRON
ELECTRON POSITRON: ANNIHILATION
ANNIHILATION: ELECTRON POSITRON
J/PSI(3100): ELECTROPRODUCTION
ELECTROPRODUCTION: J/PSI(3100)
J/PSI(3100): NONLEPTONIC DECAY
NONLEPTONIC DECAY: J/PSI(3100)
LAMBDA: PAIR PRODUCTION
PAIR PRODUCTION: LAMBDA

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Figures(0)

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Looking at {CP} Invariance and Quantum Mechanics in J/ψ→ΛΛˉJ/\psi \to \Lambda \bar{\Lambda}J/ψ→ΛΛˉ Decay

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Looking at {CP} Invariance and Quantum Mechanics in $J/\psi \to \Lambda \bar{\Lambda}$ Decay