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Measurements of moments of the hadronic mass distribution in semileptonic<i>B</i>decays

Measurements of moments of the hadronic mass distribution in semileptonic<i>B</i>decays

We report a measurement of the first four moments of the hadronic mass distribution in ¯B→Xcl−¯ν decays. The measurements are based on 89 million Υ(4S)→B¯B events where the hadronic decay of one of the B mesons is fully reconstructed and a charged lepton from the decay of the other B …