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arxiv: 0802.4258 · v1 · submitted 2008-02-28 · ✦ hep-ex

Measurement of the Bc meson mass in the exclusive decay Bc --> Jpsi Pi

classification ✦ hep-ex
keywords jpsimassmesonsignalabovebackgroundcolliderdecay
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A fully reconstructed Bc --> Jpsi Pi signal is observed with the D0 detector at the Fermilab Tevatron p-pbar collider. Using 1.3 inverse femtobarns of integrated luminosity, the signal is extracted with a significance more than five standard deviations above background. The measured Bc meson mass is 6300 (+-) 14 (stat) (+-) 5 (sys) MeV/cc

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