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Observation of the decay B[overbar]^0 → Λ_c^+ [overbar]pπ^0

Aubert, B. and Cheng, C. H. and Doll, D. A. and Echenard, B. and Fang, F. and Hitlin, D. G. and Narsky, I. and Ongmongkolkul, P. and Piatenko, T. and Porter, F. C. (2010) Observation of the decay B[overbar]^0 → Λ_c^+ [overbar]pπ^0. Physical Review D, 82 (3). Art. No. 031102. ISSN 2470-0010.

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In a sample of 467×10^6 BB[overbar] pairs collected with the BABAR detector at the PEP-II collider at SLAC we have observed the decay B[overbar]^0→Λ_c^+p[overbar] π^0 and measured the branching fraction to be (1.94±0.17±0.14±0.50)×10^(-4), where the uncertainties are statistical, systematic, and the uncertainty on the Λ_c^+→pK^-π^+ branching fraction, respectively. We determine an upper limit of 1.5×10^(-6) at 90% C.L. for the product branching fraction B[script](B[overbar]^0→Σ_c^+(2455)p[overbar] )×B[script](Λ_c^+→pK^-π^+). Furthermore, we observe an enhancement at the threshold of the invariant mass of the baryon-antibaryon pair.

Item Type:Article
Related URLs:
Cheng, C. H.0000-0002-8382-0447
Hitlin, D. G.0000-0003-4028-6982
Porter, F. C.0000-0003-1948-8889
Additional Information:© 2010 The American Physical Society. Received 12 July 2010; published 25 August 2010. 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), MICIIN (Spain), STFC (United Kingdom). Individuals have received support from the Marie Curie EIF (European Union), the A. P. Sloan Foundation and the Binational Science Foundation.
Funding AgencyGrant Number
Department of Energy (DOE)UNSPECIFIED
Natural Sciences and Engineering Research Council (Canada)UNSPECIFIED
Commissariat à l'Energie Atomique (CEA) (France)UNSPECIFIED
Centre National de la Recherche Scientifique (CNRS-IN2P3) (France)UNSPECIFIED
Bundesministerium für Bildung und Forschung (BMBF) (Germany)UNSPECIFIED
Deutsche Forschungsgemeinschaft (DFG) (Germany)UNSPECIFIED
Istituto Nazionale di Fisica Nucleare (INFN) (Italy)UNSPECIFIED
Fundamenteel Onderzoek der Materie (FOM) (Netherlands)UNSPECIFIED
Research Council of Norway (NFR)UNSPECIFIED
Ministry of Education and Science of the Russian Federation (MES)UNSPECIFIED
Ministerio de Ciencia e Innovación (MICIIN) (Spain)UNSPECIFIED
Science and Technology Facilities Council (United Kingdom)UNSPECIFIED
Marie Curie EIF (European Union)UNSPECIFIED
A. P. Sloan FoundationUNSPECIFIED
Binational Science FoundationUNSPECIFIED
Issue or Number:3
Classification Code:PACS: 13.25.Hw, 13.60.Rj
Record Number:CaltechAUTHORS:20100916-140237338
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:19991
Deposited By: Tony Diaz
Deposited On:17 Sep 2010 01:17
Last Modified:09 Mar 2020 13:18

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