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${{\mathit \Xi}^{0}}$ DECAY PARAMETERS

See the ``Note on Baryon Decay Parameters'' in the neutron Listings.

$\alpha $ FOR ${{\mathit \Xi}^{0}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit e}^{+}}{{\mathit e}^{-}}$

INSPIRE   PDGID:

S023LEE

VALUE EVTS DOCUMENT ID TECN  COMMENT $-0.8$ $\pm0.2$ $397$ $\pm21$ 1 BATLEY 2007 C NA48 ${{\mathit p}}$ Be, 400 GeV 1  This BATLEY 2007C result is consistent with the asymmetry $\alpha $ for ${{\mathit \Xi}^{0}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit \gamma}}$ , as expected if the mechanism is internal bremsstrahlung.

References:

BATLEY 2007C PL B650 1 First Observation and Branching Fraction and Decay Parameter Measurements of the Weak Radiative Decay ${{\mathit \Xi}^{0}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit e}^{+}}{{\mathit e}^{-}}$

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