| Abstract: | Using the full CDF Run II data sample, we report evidence for a new
resonance, which we refer to as B(5970), found simultaneously in the $B^0pi^+$
and $B^+pi^-$ mass distributions with a significance of 4.4 standard
deviations. We further report the first study of resonances consistent with
orbitally excited $B^{+}$ mesons and an updated measurement of the properties
of orbitally excited $B^0$ and $B_s^0$ mesons. Using samples of approximately
8400 $B^{**0}$, 3300 $B^{**+}$, 1350 $B^{**0}_s$, 2600 $B(5970)^0$, and 1400
$B(5970)^+$ decays, we measure the masses and widths of all states, as well as
the product of the relative production rate of $B_1$ and $B_2^*$ states times
the branching fraction into a $B^{0,+}$ meson and a charged particle.
Furthermore, we measure the branching fraction of the $B_{s2}^{*0}
ightarrow
B^{*+} K^-$ decay relative to the $B_{s2}^{*0}
ightarrow B^{+} K^-$ decay,
the production rate times the branching fraction of the B(5970) state relative
to the $B_{2}^{*0,+}$ state, and the production rate of the orbitally excited
$B^{0,+}$ states relative to the $B^{0,+}$ ground state. The masses of the new
B(5970) resonances are $5978pm5( extrm{stat})pm12( extrm{syst})
extrm{MeV/c}^{2}$ for the neutral state and
$5961pm5( extrm{stat})pm12( extrm{syst}) extrm{MeV/c}^{2}$ for the
charged state, assuming that the resonance decays into $Bpi$ final states. The
properties of the orbitally excited and the new $B(5970)^{0,+}$ states are
compatible with isospin symmetry. |
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