Evidence for B ->eta(')pi and improved measurements for B ->eta ' K

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Evidence for B ->eta(')pi and improved measurements for B ->eta ' K

Schumann, J; Wang, CH; Abe, K; Adachi, I; Aihara, H; Anipko, D; Arinstein, K; ... Belle Collaboration; + view all (2006) Evidence for B ->eta(')pi and improved measurements for B ->eta ' K. PHYS REV LETT , 97 (6) , Article 061802. 10.1103/PhysRevLett.97.061802. Green open access

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Abstract

We report evidence for the exclusive two-body charmless hadronic B meson decay B ->eta(')pi, and improved measurements of B ->eta K-'. The results are obtained from a data sample of 386x10(6) B (B) over bar pairs collected at the Upsilon(4S) resonance, with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We measure B(B+->eta(')pi(+))=[1.76(-0.62)(+0.67)(stat)(-0.14)(+0.15)(syst)]x10(-6) and B(B-0 ->eta(')pi(0))= [2.79(-0.96)(+1.02)(stat)(-0.34)(+0.25)(syst)]x10(-6). We also find the ratio of B(B+->eta K-'(+))/B(B-0 ->eta K-'(0))=1.17 +/- 0.08(stat)+/- 0.03(syst) and measure the direct CP asymmetries for the charged modes.

Type:	Article
Title:	Evidence for B ->eta(')pi and improved measurements for B ->eta ' K
Open access status:	An open access version is available from UCL Discovery
DOI:	10.1103/PhysRevLett.97.061802
Publisher version:	http://dx.doi.org/10.1103/PhysRevLett.97.061802
Additional information:	© 2006 The American Physical Society
Keywords:	DECAYS, BELLE, QCD, PHYSICS, SEARCH, ETA'
UCL classification:	UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
URI:	https://discovery.ucl.ac.uk/id/eprint/1308515