Evidence for the Charmless Annihilation Decay Mode B[subscript s][superscript 0]→π[superscript +]π[superscript -]
Author(s)
Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Paus, Christoph M. E.
DownloadAaltonen-2012-Evidence for the Charmless Annihilation Decay.pdf (383.8Kb)
PUBLISHER_POLICY
Publisher Policy
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Terms of use
Metadata
Show full item recordAbstract
We search for annihilation decay modes of neutral b mesons into pairs of charmless charged hadrons with the upgraded Collider Detector at the Fermilab Tevatron. Using a data sample corresponding to 6 fb[superscript -1] of integrated luminosity, we obtain the first evidence for the B[subscript s][superscript 0]→π[superscript +]π[superscript -] decay, with a significance of 3.7σ, and a measured branching ratio B(B[subscript s][superscript 0]→π[superscript +]π[superscript -])=(0.57±0.15(stat)±0.10(syst))×10[superscript -6]. A search for the B[superscript 0]→K[superscript +]K[superscript -] mode in the same sample yields a significance of 2.0σ, and a central value estimate B(B[superscript 0]→K[superscript +]K[superscript -])=(0.23±0.10(stat)±0.10(syst))×10[superscript -6].
Date issued
2012-05Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear ScienceJournal
Physical Review Letters
Publisher
American Physical Society
Citation
T. Aaltonen et al. "Evidence for the Charmless Annihilation Decay Mode B[subscript s][superscript 0]→π[superscript +]π[superscript -]" Physical Review Letters 108, 211803 (2012). © 2012 American Physical Society
Version: Final published version
ISSN
0031-9007
1079-7114