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Título

Measurement of the D*(2010)(+) natural linewidth and the D*(2010)(+)-D-0 mass difference

AutorBabar Collaboration; Lees, J. P.; Martínez-Vidal, Fernando ; Oyanguren, Arantza ; Villanueva-Pérez, P.
Palabras claveBabar detector
Mesons
Fecha de publicación9-sep-2013
EditorAmerican Physical Society
CitaciónPhysical Review - Section D - Particles and Fields 88 (5): 052003 - 20 (2013)
ResumenWe measure the mass difference, Delta m(0), between the D*(2010)(+) and the D-0 and the natural linewidth, Gamma, of the transition D*(2010)(+) -> D-0 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 fb(-1). The D-0 is reconstructed in the decay modes D-0 -> K-pi(+) and D-0 -> K-pi(+)pi(-)pi(+). For the decay mode D-0 -> K-pi(+) we obtain Gamma = (83.4 +/- 1.7 +/- 1.5) keV and Delta m(0) = (145425.6 +/- 0.6 +/- 1.8) keV, where the quoted errors are statistical and systematic, respectively. For the D-0 -> K-pi(+)pi(-)pi(+) mode we obtain Gamma = (83.2 +/- 1.5 +/- 2.6) keV and Delta m(0) = (145426.6 +/- 0.5 +/- 2.0) keV. The combined measurements yield Gamma = (83.3 +/- 1.2 +/- 1.4) keV and Delta m(0) = (145425.9 +/- 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.
Versión del editorhttp://dx.doi.org/10.1103/PhysRevD.88.052003
URIhttp://hdl.handle.net/10261/126421
DOI10.1103/PhysRevD.88.052003
ISSN1550-7998
E-ISSN1550-2368
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