UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Observation of B+->(K)over-bar(0) K+ and B-0 -> K-0 (K)over-bar(0)

Aubert, B; Bona, M; Boutigny, D; Couderc, F; Karyotakis, Y; Lees, JP; Poireau, V; ... BaBar Collaboration; + view all (2006) Observation of B+->(K)over-bar(0) K+ and B-0 -> K-0 (K)over-bar(0). PHYS REV LETT , 97 (17) , Article 171805. 10.1103/PhysRevLett.97.171805. Green open access

[thumbnail of 1303809.pdf]
Preview
PDF
1303809.pdf

Download (278kB)

Abstract

We report observations of the b -> d penguin-dominated decays B+->(K) over bar K-0(+) and B-0 -> K-0(K) over bar (0) in 316 fb(-1) of e(+)e(-) collision data collected with the BABAR detector. We measure the branching fractions B(B+->(K) over bar K-0(+))=(1.61 +/- 0.44 +/- 0.09)x10(-6) and B(B-0 -> K-0(K) over bar (0))=(1.08 +/- 0.28 +/- 0.11)x10(-6) and the CP-violating charge asymmetry A(CP)((K) over bar K-0(+))=0.10 +/- 0.26 +/- 0.03. Using a vertexing technique previously employed in several analyses of all-neutral final states containing kaons, we report the first measurement of time-dependent CP-violating asymmetries in B-0 ->(KSKS0)-K-0, obtaining S=-1.28(-0.73-0.16)(+0.80+0.11) and C=-0.40 +/- 0.41 +/- 0.06. We also report improved measurements of the branching fraction B(B+-> K-0 pi(+))=(23.9 +/- 1.1 +/- 1.0)x10(-6) and CP-violating charge asymmetry A(CP)(K-0 pi(+))=-0.029 +/- 0.039 +/- 0.010.

Type: Article
Title: Observation of B+->(K)over-bar(0) K+ and B-0 -> K-0 (K)over-bar(0)
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.97.171805
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.97.171805
Language: English
Additional information: © 2006 The American Physical Society
Keywords: FACTORIZATION, ASYMMETRIES, DECAYS
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/1303809
Downloads since deposit
67Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item