Measurement of the D*(2010)+ meson width and the D*(2010)+ - D0 mass difference

Abstract

We measure the mass difference, Δm_0, between the D*(2010)+ and the D0 and the natural line width, Γ, of the transition D*(2010)+ -> D0 pi+. The data were recorded with the BABAR detector at center-of-mass energies at and near the Upsilon(4S) resonance, and correspond to an integrated luminosity of approximately 477 1/fb. The D0 is reconstructed in the decay modes D0 -> K- pi+ and D0 -> K- pi+ pi- pi+. For the decay mode D0 -> K- pi+ we obtain Gamma = (83.4 +- 1.7 +- 1.5) keV and Δm_0 = (145 425.6 +- 0.6 +- 1.8) keV, where the quoted errors are statistical and systematic, respectively. For the D0 -> K- pi+ pi- pi+ mode we obtain Γ= (83.2 +- 1.5 +- 2.6) keV and Δm_0 = (145 426.6 +- 0.5 +- 2.0) keV. The combined measurements yield Γ= (83.3 +- 1.2 +- 1.4) keV and Δm_0 = (145 425.9 +- 0.4 +- 1.7) keV; the width is a factor of approximately 12 times more precise than the previous value, while the mass difference is a factor of approximately 6 times more precise.

7 pages, 2 figures, accepted by Phys. Rev. Lett

References in corpus (4)

• Observation of new resonances decaying to $D\pi$ and $D^{\ast }\pi$ in inclusive $e^{+}{e}^{-}$ collisions near $\sqrt{s}=$10.58 GeV
• The B -> pi l nu semileptonic form factor from three-flavor lattice QCD: A model-independent determination of |V(ub)|
• Theoretical estimate of the $D^{\ast }\to D\pi$ decay rate
• Strong D* -> D+pi and B* -> B+pi couplings

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