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.

Measurement of Resonance Parameters of Orbitally Excited Narrow B-0 Mesons

CIOCCI, MARIA AGNESE;DONATI, SIMONE;
2009-01-01

Abstract

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.
2009
T., Aaltonen; J., Adelman; T., Akimoto; M. G., Albrow; B. A., Gonzalez; S., Amerio; D., Amidei; A., Anastassov; A., Annovi; J., Antos; G., Apollinari;...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/829063
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