Lees, J. P. and Chao, D. S. and Cheng, C. H. and Echenard, B. and Flood, K. T. and Hitlin, D. G. and Miyashita, T. S. and Ongmongkolkul, P. and Porter, F. C. (2014) Evidence for the decay B^0 → ωω and search for B^0 → ωϕ. Physical Review D, 89 (5). Art. No. 051101. ISSN 2470-0010. https://resolver.caltech.edu/CaltechAUTHORS:20140506-160312811
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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.
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| 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). | ||||||||||||||||||||||||||||||||||||
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| Issue or Number: | 5 | ||||||||||||||||||||||||||||||||||||
| Record Number: | CaltechAUTHORS:20140506-160312811 | ||||||||||||||||||||||||||||||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20140506-160312811 | ||||||||||||||||||||||||||||||||||||
| Official Citation: | Lees, J. P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., ...Wu, S. L. (2014). Evidence for the decay B^0 → ωω and search for B^0 → ωϕ. Physical Review D, 89(5), 051101. | ||||||||||||||||||||||||||||||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||||||||||||||||||||||||||
| ID Code: | 45543 | ||||||||||||||||||||||||||||||||||||
| Collection: | CaltechAUTHORS | ||||||||||||||||||||||||||||||||||||
| Deposited By: | Aucoeur Ngo | ||||||||||||||||||||||||||||||||||||
| Deposited On: | 06 May 2014 23:48 | ||||||||||||||||||||||||||||||||||||
| Last Modified: | 09 Mar 2020 13:18 |
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