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Título : Measurement of Resonance Parameters of Orbitally Excited Narrow B-0 Mesons
Autor : CDF Collaboration, Cabrera, Susana, Cuenca Almenar, Cristóbal, Álvarez González, B., Casal, Bruno, Cuevas, Javier, Gómez, G., Rodrigo, Teresa, Ruiz, Alberto, Scodellaro, Luca, Vila, Iván, Vilar, Rocío, Aaltonen, T.
Fecha de publicación : 13-Mar-2009
Editor: American Physical Society
Citación : Physical Review Letters 102 (10): 102003 (2009)
Resumen: We report a measurement of resonance parameters of the orbitally excited (L=1) narrow B-0 mesons in decays to B(*)+pi(-) using 1.7 fb(-1) of data collected by the CDF II detector at the Fermilab Tevatron. The mass and width of the B-2(*0) state are measured to be m(B-2(*0))=5740.2(-1.8)(+1.7)(stat)(-0.8)(+0.9)(syst) MeV/c(2) and Gamma(B-2(*0))=22.7(-3.2)(+3.8)(stat)(-10.2)(+3.2)(syst) MeV/c(2). The mass difference between the B-2(*0) and B-1(0) states is measured to be 14.9(-2.5)(+2.2)(stat)(-1.4)(+1.2)(syst) MeV/c(2), resulting in a B-1(0) mass of 5725.3(-2.2)(+1.6)(stat)(-1.5)(+1.4)(syst) MeV/c(2). This is currently the most precise measurement of the masses of these states and the first measurement of the B-2(*0) width.
Versión del editor: 10.1103/PhysRevLett.102.102003
ISSN: 0031-9007
DOI: 10.1103/PhysRevLett.102.102003
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