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Evidence for the decay B^0 → ωω and search for B^0 → ωϕ

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. doi:10.1103/PhysRevD.89.051101.

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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.

Item Type:Article
Related URLs:
URLURL TypeDescription
Cheng, C. H.0000-0002-8382-0447
Hitlin, D. G.0000-0003-4028-6982
Porter, F. C.0000-0003-1948-8889
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).
Funding AgencyGrant Number
Department of Energy (DOE)UNSPECIFIED
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
Commissariat à l’Energie Atomique (CEA)UNSPECIFIED
Centre National de la Recherche Scientifique (CNRS)UNSPECIFIED
Bundesministerium für Bildung und Forschung (BMBF)UNSPECIFIED
Deutsche Forschungsgemeinschaft (DFG)UNSPECIFIED
Istituto Nazionale di Fisica Nucleare (INFN)UNSPECIFIED
Stichting voor Fundamenteel Onderzoek der Materie (FOM)UNSPECIFIED
Norwegian Research CouncilUNSPECIFIED
Ministry of Education and Science of the Russian FederationUNSPECIFIED
Science and Technology Facilities Council (STFC)UNSPECIFIED
Binational Science Foundation (USA-Israel)UNSPECIFIED
Marie Curie FellowshipUNSPECIFIED
Alfred P. Sloan FoundationUNSPECIFIED
Institut National de Physique Nucléaire et de Physique des Particules (IN2P3)UNSPECIFIED
Issue or Number:5
Record Number:CaltechAUTHORS:20140506-160312811
Persistent URL:
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
Deposited By: Aucoeur Ngo
Deposited On:06 May 2014 23:48
Last Modified:10 Nov 2021 17:13

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