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 M(D0)=1864. 75± 0.15(stat)± 0.11(syst) MeV/c2. The mass differences M(D+)-M(D0=4.76± 0.12(stat)± MeV/c 2. M(Ds+)-M(D+)=98.68± 0.03(stat)± 0.04(syst) MeV/c2 are measured using the D 0 → K + K - π + π - and Ds+ to K+K -π+ modes. © 2013 CERN for the benefit of the LHCb collaboration.
CITATION STYLE
Aaij, R., Abellan Beteta, C., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., … Zvyagin, A. (2013). Precision measurement of D meson mass differences. Journal of High Energy Physics, 2013(6). https://doi.org/10.1007/JHEP06(2013)065
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