Published March 5, 2014
| Published
Journal Article
Open
Evidence for the decay B^0 → ωω and search for B^0 → ωϕ
Chicago
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Abstract
We describe searches for B meson decays to the charmless vector-vector final states ωω and ωϕ with 471 × 10^6B¯B pairs produced in e^+e^− annihilation at √s = 10.58 GeV using the BABAR detector at the PEP-II collider at the SLAC National Accelerator Laboratory. We measure the branching fraction β(B^0 → ωω) = (1.2 ± 0.3^(+0.3)_(-0.2) × 10^(−6), where the first uncertainty is statistical and the second is systematic, corresponding to a significance of 4.4 standard deviations. We also determine the upper limit β(B^0 → ωω) < 0.7 × 10^(−6) at 90% confidence level. These measurements provide the first evidence for the decay B^0 → ωω, and an improvement of the upper limit for the decay B^0 → ωϕ.
Additional Information
© 2014 American Physical Society. Published 5 March 2014; Received 3 December 2013. We are grateful for the excellent luminosity and machine conditions provided by our PEP-II colleagues, and for the substantial dedicated effort from the computing organizations that support BABAR. The collaborating institutions wish to thank SLAC for its support and kind hospitality. This work is supported by DOE and NSF (USA), NSERC (Canada), CEA and CNRS-IN2P3 (France), BMBF and DFG (Germany), INFN (Italy), FOM (The Netherlands), NFR (Norway), MES (Russia), MINECO (Spain), STFC (United Kingdom), BSF (USA-Israel). Individuals have received support from the Marie Curie EIF (European Union) and the A. P. Sloan Foundation (USA).Attached Files
Published - PhysRevD.89.051101.pdf
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PhysRevD.89.051101.pdf
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Additional details
- Eprint ID
- 45543
- Resolver ID
- CaltechAUTHORS:20140506-160312811
- Department of Energy (DOE)
- NSF
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Commissariat à l'Energie Atomique (CEA)
- Centre National de la Recherche Scientifique (CNRS)
- Bundesministerium für Bildung und Forschung (BMBF)
- Deutsche Forschungsgemeinschaft (DFG)
- Istituto Nazionale di Fisica Nucleare (INFN)
- Stichting voor Fundamenteel Onderzoek der Materie (FOM)
- Norwegian Research Council
- Ministry of Education and Science of the Russian Federation
- MINECO (Spain)
- Science and Technology Facilities Council (STFC)
- Binational Science Foundation (USA-Israel)
- Marie Curie Fellowship
- Alfred P. Sloan Foundation
- Institut National de Physique Nucléaire et de Physique des Particules (IN2P3)
- Created
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2014-05-06Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field