Observation of B0 Meson Decay to a+-(1)(1260) pi-+ - INSPIRE

DataBETA

Observation of B0 Meson Decay to a+-(1)(1260) pi-+

BaBar

Collaboration

Mar, 2006

7 pages

Published in:

Phys.Rev.Lett. 97 (2006) 051802

e-Print:

hep-ex/0603050 [hep-ex]

DOI:

10.1103/PhysRevLett.97.051802

PDG:

{{\mathit B}^{0}}

\rightarrow

{{\mathit a}_{{{1}}}{(1260)}^{\mp}}{{\mathit \pi}^{\pm}}

Report number:

SLAC-PUB-11769,
BABAR-PUB-06-005

Experiments:

SLAC-PEP2-BABAR

View in:

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Abstract:

We present a measurement of the branching fraction of the decay B0 --> a1(1260)^{+-} pi^{-+} with a1(1260)^{+-} --> pi^{-+} pi^{+-} pi^{+-}. The data sample consists of 218 million B B-bar pairs collected at the Y(4S) resonance and recorded by the BaBar detector at the PEP-II asymmetric-energy e+e- collider at SLAC. The analysis is based on unbinned multivariate maximum likelihood fit. The measured branching fraction is: (16.6 +/- 1.9 +/- 1.5) 10^{-6}. The decay mode, observed for the first time, is seen with a significance of 9.2 sigma (systematic uncertainties included).

Note:

7 pages, 2 postscript figures. Submitted to Phys. Rev. Lett Report-no: BABAR-PUB-06/005, SLAC-PUB-11769

13.25.Hw
electron positron: colliding beams
electron positron: annihilation
Upsilon(10570): electroproduction
B: pair production
B0: hadronic decay
a1(1260): hadronic decay
B0: branching ratio
BaBar
experimental results

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