We present measurements of the branching fractions for the decays B-+/--> a(1)(+/-)(1260)pi(0) and B-+/--> a(1)(0)(1260)pi(+/-) from a data sample of 232x10(6) B(B)over-bar pairs produced in e(+)e(-) annihilation through the Upsilon(4S) resonance. We measure the branching fraction B(B-+/--> a(1)(+/-)(1260)pi(0))xB(a(1)(+/-)(1260)->pi(-)pi(+)pi(+/-))=(13.2 +/- 2.7 +/- 2.1)x10(-6) with a significance of 4.2 sigma, and the branching fraction B(B-+/--> a(1)(0)(1260)pi(+/-))xB(a(1)(0)(1260)->pi(-)pi(+)pi(0))=(20.4 +/- 4.7 +/- 3.4)x10(-6) with a significance of 3.8 sigma, where the first error quoted is statistical and the second is systematic.

Evidence for charged B meson decays to a(1)(+/-)(1260)pi(0) and a(1)(0)(1260)pi(+/-)

BIANCHI, Fabrizio;GAMBA, Diego;
2007-01-01

Abstract

We present measurements of the branching fractions for the decays B-+/--> a(1)(+/-)(1260)pi(0) and B-+/--> a(1)(0)(1260)pi(+/-) from a data sample of 232x10(6) B(B)over-bar pairs produced in e(+)e(-) annihilation through the Upsilon(4S) resonance. We measure the branching fraction B(B-+/--> a(1)(+/-)(1260)pi(0))xB(a(1)(+/-)(1260)->pi(-)pi(+)pi(+/-))=(13.2 +/- 2.7 +/- 2.1)x10(-6) with a significance of 4.2 sigma, and the branching fraction B(B-+/--> a(1)(0)(1260)pi(+/-))xB(a(1)(0)(1260)->pi(-)pi(+)pi(0))=(20.4 +/- 4.7 +/- 3.4)x10(-6) with a significance of 3.8 sigma, where the first error quoted is statistical and the second is systematic.
2007
99
261801
261805
B. Aubert; M. Bona; D. Boutigny; Y. Karyotakis; J. P. Lees; V. Poireau; X. Prudent; V. Tisserand; A. Zghiche; J. Garra Tico; E. Grauges; L. Lopez; A. ...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/42794
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