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Measurement of the Radiative Ke3 Branching Ratio
NA48 collaboration
We present a measurement of the relative branching ratio of the decay KL -> pi e nu gamma (Ke3gamma) with respect to KL-> pi e nu (gamma) (Ke3+Ke3gamma) decay. The result is based…
A Precision Measurement of the Mass of the Top Quark
D0 Collaboration
The Standard Model of particle physics contains about two dozen parameters - such as particle masses - whose origins are still unknown and cannot be predicted, but whose values are…
Helicity of the W Boson in Lepton+Jets ttbar Events
D0 Collaboration
We examine properties of ttbar candidates events in lepton+jets final states to establish the helicities of the W bosons in t->W+b decays. Our analysis is based on a direct calcula…
Measurement of the Xi0 -> Lambda gamma Decay Asymmetry and Branching Fraction
A. Lai
In data taken with the NA48 experiment at the CERN SPS in 1999, 730 candidates of the weak radiative hyperon decay Xi0 -> Lambda gamma have been found with an estimated background…