We present a study of resonances in exclusive decays of B mesons to (D) over bar ((*))D((*))K. We report the observation of the decays B ->(D) over bar ((*))D(s1)(+)(2536) where the D(s1)(+)(2536) is reconstructed in the D(*0)K(+) and D(*+)K(S)(0) decay channels. We report also the observation of the decays B ->psi(3770)K where the psi(3770) decays to (D) over bar (0)D(0) and D(-)D(+). In addition, we present the observation of an enhancement for the (D) over bar (*0)D(0) invariant mass in the decays B ->(D) over bar (*0)D(0)K, at a mass of (3875.1(-0.5)(+0.7)+/- 0.5) MeV/c(2) with a width of (3.0(-1.4)(+1.9)+/- 0.9) MeV (the first errors are statistical and the second are systematic). Branching fractions and spin studies are shown for the three resonances. The results are based on 347 fb(-1) of data collected with the BABAR detector at the PEP-II B factory.
Study of resonances in exclusive B decays to (D)over-bar((*))D((*))K RID C-5223-2009 RID C-5719-2008 RID D-1055-2009
CALDERINI, GIOVANNI;ANGELINI, CARLO;BATIGNANI, GIOVANNI;BETTARINI, STEFANO;FORTI, FRANCESCO;GIORGI, MARCELLO;PAOLONI, EUGENIO;RIZZO, GIULIANA;
2008-01-01
Abstract
We present a study of resonances in exclusive decays of B mesons to (D) over bar ((*))D((*))K. We report the observation of the decays B ->(D) over bar ((*))D(s1)(+)(2536) where the D(s1)(+)(2536) is reconstructed in the D(*0)K(+) and D(*+)K(S)(0) decay channels. We report also the observation of the decays B ->psi(3770)K where the psi(3770) decays to (D) over bar (0)D(0) and D(-)D(+). In addition, we present the observation of an enhancement for the (D) over bar (*0)D(0) invariant mass in the decays B ->(D) over bar (*0)D(0)K, at a mass of (3875.1(-0.5)(+0.7)+/- 0.5) MeV/c(2) with a width of (3.0(-1.4)(+1.9)+/- 0.9) MeV (the first errors are statistical and the second are systematic). Branching fractions and spin studies are shown for the three resonances. The results are based on 347 fb(-1) of data collected with the BABAR detector at the PEP-II B factory.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
