%0 Journal Article
%T Measurement of branching fractions of B decays to K-1(1270)pi and K-1(1400)pi and determination of the CKM angle alpha from B-0 -> a(1)(1260)(+/-)pi(-/+)
%A BABAR Collaboration (Aubert, B. et al
%A Azzolini, V.
%A Lopez-March, N.
%A Martinez-Vidal, F.
%A Milanes, D. A.
%A Oyanguren, A.
%J Physical Review D
%D 2010
%V 81
%N 5
%I Amer Physical Soc
%@ 1550-7998
%G English
%F BABARCollaborationAubert_etal2010
%O ISI:000276194200017
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=472), last updated on Fri, 25 Feb 2011 12:24:28 +0000
%X We report measurements of the branching fractions of neutral and charged B meson decays to final states containing a K-1(1270) or K-1(1400) meson and a charged pion. The data, collected with the BABAR detector at the SLAC National Accelerator Laboratory, correspond to 454 x 10(6) B (B) over bar pairs produced in e(+)e(-) annihilation. We measure the branching fractions B(B-0 -> K-1(1270)(+)pi(-) + K-1(1400)(+)pi(-)) = 3.1(-0.7)(+0.8) x 10(-5) and B(B+ -> K-1(1270)(0)pi(+) + K1(1400)(0)pi(+)) = 2.9(-1.7)(+2.9) x 10(-5) (< 8.2 x 10(-5) at 90% confidence level), where the errors are statistical and systematic combined. The B-0 decay mode is observed with a significance of 7.5 sigma, while a significance of 3.2 sigma is obtained for the B+ decay mode. Based on these results, we estimate the weak phase alpha = (79 +/- 7 +/- 11)degrees from the time-dependent CP asymmetries in B-0 -> a(1)(1260)(+/-)pi(-/+) decays.
%R 10.1103/PhysRevD.81.052009
%U http://arxiv.org/abs/0909.2171
%U https://doi.org/10.1103/PhysRevD.81.052009
%P 052009-16pp