Precision measurement of D meson mass differences

Using three- and four-body decays of D mesons produced in semileptonic b-hadron decays, precision measurements of D meson mass differences are made together with a measurement of the D (0) mass. The measurements are based on a dataset corresponding to an integrated luminosity of 1.0 fb(−1) collected in pp collisions at 7 TeV. Using the decay D (0) → K (+) K (−) K (−) π (+), the D (0) mass is measured to be

Note:

Journal of High Energy Physics, Volume 2013, Issue 6

charmed meson: mass difference
D0: mass: measured
p p: scattering
precision measurement
B: semileptonic decay
mass difference: (D+ D-)
mass difference: (D/s+ D+)
charmed meson: hadronic decay
track data analysis: vertex
D0 --> K+ K- pi+ pi-

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