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Evidence for the baryonic decay B[bar]^0 → D^0ΛΛ[bar]

Lees, J. P. and Chao, D. S. and Cheng, C. H. and Echenard, B. and Flood, K. T. and Hitlin, D. G. and Ongmongkolkul, P. and Porter, F. C. (2014) Evidence for the baryonic decay B[bar]^0 → D^0ΛΛ[bar]. Physical Review D, 89 (11). Art. No. UNSP 112002 . ISSN 1550-7998. https://resolver.caltech.edu/CaltechAUTHORS:20141009-152118965

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Abstract

Evidence is presented for the baryonic B meson decay B[bar]^0 →D^0 ΛΛ[bar] based on a data sample of 471×10^6 BB[bar] pairs collected with the BABAR detector at the PEP-II asymmetric e^+ e^− collider located at the SLAC National Accelerator Laboratory. The branching fraction is determined to be B(B[bar]^0 →D ^0ΛΛ[bar] )=(9.8^(+2.9)_(−2.6) ±1.9)×10^(−6), corresponding to a significance of 3.4 standard deviations including additive systematic uncertainties. A search for the related baryonic B meson decay B[bar]^ 0 →D^0Σ^0Λ[bar] with Σ^0 →Λγ is performed and an upper limit B(B[bar]^ 0 →D^0Σ^0 Λ[bar] +B[bar]^ 0 →D^0 ΛΣ[bar]^ 0 )<3.1×10^(−5) is determined at 90% confidence level.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevD.89.112002 DOIArticle
http://journals.aps.org/prd/abstract/10.1103/PhysRevD.89.112002PublisherArticle
http://arxiv.org/abs/1401.5990arXivDiscussion Paper
ORCID:
AuthorORCID
Cheng, C. H.0000-0002-8382-0447
Hitlin, D. G.0000-0003-4028-6982
Porter, F. C.0000-0003-1948-8889
Alternate Title:Evidence for the baryonic decay (B)over-bar(0) -> D-0 Lambda(Lambda)over-bar
Additional Information:© 2014 American Physical Society. Received 27 January 2014; Published 6 June 2014. We are grateful for the extraordinary contributions of our PEP-II colleagues in achieving the excellent luminosity and machine conditions that have made this work possible. The success of this project also relies critically on the expertise and dedication of the computing organizations that support BABAR. The collaborating institutions wish to thank SLAC for its support and the kind hospitality extended to them. This work is supported by the U.S. Department of Energy and National Science Foundation, the Natural Sciences and Engineering Research Council (Canada), the Commissariat à l’Energie Atomique and Institut National de Physique Nucléaire et de Physique des Particules (France), the Bundesministerium für Bildung und Forschung and Deutsche Forschungsgemeinschaft (Germany), the Istituto Nazionale di Fisica Nucleare (Italy), the Foundation for Fundamental Research on Matter (The Netherlands), the Research Council of Norway, the Ministry of Education and Science of the Russian Federation, Ministerio de Ciencia e Innovación (Spain), and the Science and Technology Facilities Council (United Kingdom). Individuals have received support from the Marie-Curie IEF program (European Union), the A. P. Sloan Foundation (USA) and the Binational Science Foundation (USA-Israel).
Funders:
Funding AgencyGrant Number
SLACUNSPECIFIED
Department of Energy (DOE)UNSPECIFIED
NSFUNSPECIFIED
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
Commissariat à l’Energie Atomique (CEA)UNSPECIFIED
Bundesministerium für Bildung und Forschung (BMBF)UNSPECIFIED
Istituto Nazionale di Fisica Nucleare (INFN)UNSPECIFIED
Stichting voor Fundamenteel Onderzoek der Materie (FOM)UNSPECIFIED
Research Council of NorwayUNSPECIFIED
Ministry of Education and Science of the Russian FederationUNSPECIFIED
Ministerio de Ciencia e Innovación (MICINN)UNSPECIFIED
Science and Technology Facilities Council (STFC)UNSPECIFIED
Marie Curie FellowshipUNSPECIFIED
Alfred P. Sloan FoundationUNSPECIFIED
Binational Science Foundation (USA-Israel)UNSPECIFIED
Institut National de Physique Nucléaire et de Physique des Particules (IN2P3)UNSPECIFIED
Deutsche Forschungsgemeinschaft (DFG)UNSPECIFIED
Issue or Number:11
Classification Code:PACS: 13.25.Hw; 13.60.Rj; 14.20.Lq.
Record Number:CaltechAUTHORS:20141009-152118965
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20141009-152118965
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:50319
Collection:CaltechAUTHORS
Deposited By: Joanne McCole
Deposited On:15 Oct 2014 22:32
Last Modified:09 Mar 2020 13:18

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