The weak radiative decay Ξ 0 → Λe+ e− has been detected for the first time. We find 412 candidates in the signal region, with an estimated background of 15 ± 5 events. We determine the branching fraction B(Ξ 0 → Λe+ e− ) = [7.6 ± 0.4(stat) ± 0.4(syst) ± 0.2(norm)] × 10−6 , consistent with an internal bremsstrahlung process, and the decay asymmetry parameter αΞ Λee = −0.8 ± 0.2, consistent with that of Ξ 0 → Λγ . The charge conjugate reaction antiΞ 0 → antiΛe+ e− has also been observed
The radiative decay Λ0b → Λ γ is observed for the first time using a data sample of proton-proton co...
We present measurements of the B→ηKγ branching fractions and upper limits for the B→η′Kγ branching f...
In a measurement performed at the Brookhaven National Laboratory we have measured the branching rat...
The weak radiative decay \u39e 0 \u2192 \u39be+ e 12 has been detected for the first time. We find 4...
The weak radiative decay Ξ0→Λe+e− has been detected for the first time. We find 412 candidates in th...
The weak radiative decay Xi(o) -> Lambda e(+)e(-) has been detected for the first time. We find 412 ...
The weak radiative decay Xi(o) -> Lambda e(+)e(-) has been detected for the first time. We find 412 ...
The weak radiative decay $\Xi^0 \rightarrow \Lambda e^{+} e^{-}$ has been detected for the first tim...
In an experiment performed at Fermilab, we have observed the weak radiative decay Ξ0→Σ0γ. From a sam...
In data taken with the NA48 experiment at the CERN SPS in 1999, 730 candidates of the weak radiative...
In data taken with the NA48 experiment at the CERN SPS in 1999, 730 candidates of the weak radiative...
Based on a sample of η′ mesons produced in the radiative decay J/ψ→γη′ in 1.31×109 J/ψ events collec...
The Cabibbo-allowed weak radiative decay Λc+→ς+γ has been searched for in a sample of Λc+Λ¯c- pairs ...
Two events with the characteristics of the decay KL0 →e+e-e+e- have been observed with a negligible ...
Using a pp collision data sample corresponding to an integrated luminosity of 3.0 fb−1, collected by...
The radiative decay Λ0b → Λ γ is observed for the first time using a data sample of proton-proton co...
We present measurements of the B→ηKγ branching fractions and upper limits for the B→η′Kγ branching f...
In a measurement performed at the Brookhaven National Laboratory we have measured the branching rat...
The weak radiative decay \u39e 0 \u2192 \u39be+ e 12 has been detected for the first time. We find 4...
The weak radiative decay Ξ0→Λe+e− has been detected for the first time. We find 412 candidates in th...
The weak radiative decay Xi(o) -> Lambda e(+)e(-) has been detected for the first time. We find 412 ...
The weak radiative decay Xi(o) -> Lambda e(+)e(-) has been detected for the first time. We find 412 ...
The weak radiative decay $\Xi^0 \rightarrow \Lambda e^{+} e^{-}$ has been detected for the first tim...
In an experiment performed at Fermilab, we have observed the weak radiative decay Ξ0→Σ0γ. From a sam...
In data taken with the NA48 experiment at the CERN SPS in 1999, 730 candidates of the weak radiative...
In data taken with the NA48 experiment at the CERN SPS in 1999, 730 candidates of the weak radiative...
Based on a sample of η′ mesons produced in the radiative decay J/ψ→γη′ in 1.31×109 J/ψ events collec...
The Cabibbo-allowed weak radiative decay Λc+→ς+γ has been searched for in a sample of Λc+Λ¯c- pairs ...
Two events with the characteristics of the decay KL0 →e+e-e+e- have been observed with a negligible ...
Using a pp collision data sample corresponding to an integrated luminosity of 3.0 fb−1, collected by...
The radiative decay Λ0b → Λ γ is observed for the first time using a data sample of proton-proton co...
We present measurements of the B→ηKγ branching fractions and upper limits for the B→η′Kγ branching f...
In a measurement performed at the Brookhaven National Laboratory we have measured the branching rat...