Observation of B^0 -> a_1^{+/-}(1260) π^{-/+}

Details Observation of B^0 -> a_1^{+/-}(1260) π^{-/+} Observation of B^0 -> a_1^{+/-}(1260) π^{-/+}

2005-07-26

arxiv.org/abs/hep-ex/0507096v1

Physics

High Energy Physics

High Energy Physics - Experiment

11 pages, 2 figures

Scientific paper

We report a new measurement of the branching fraction of neutral $B$ meson decays $B^0\ra a_{1}^{\pm}(1260)\pi^{\mp}$ with \ensuremath{a_{1}^{\pm}(1260)\ra \rho^{0}\pi^{\pm}} and $\rho^0\ra pi^+\pi^-$ using $275\times 10^{6}$ BBar pairs collected by the Belle detector at the KEKBasymmetric-energy $e^{+}e^{-}$ collider. We measure the branching fraction $\mathcal{B}($B^0\ra a_{1}^{\pm}(1260)\pi^{\mp}=(48.6\pm 4.1(stat)\pm 3.9(syst)) \times 10^{-6}$. Using a relativistic Breit-Wigner parameterization, we measure the mass and width of the $a_{1}(1260)$ to be $m_{a_1}=1197\pm 34 MeV/c^2$ and $\Gamma_{a_1}=305\pm 43 MeV/c^2$, respectively.

Affiliated with

Also associated with

No associations

Rating

Observation of B^0 -> a_1^{+/-}(1260) π^{-/+} does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Observation of B^0 -> a_1^{+/-}(1260) π^{-/+}, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Observation of B^0 -> a_1^{+/-}(1260) π^{-/+} will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-208683