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Published August 25, 2010 | Version Published
Journal Article Open

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

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Abstract

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.

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.

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Identifiers

Eprint ID
19991
Resolver ID
CaltechAUTHORS:20100916-140237338

Funding

Department of Energy (DOE)
NSF
Natural Sciences and Engineering Research Council (Canada)
Commissariat à l'Energie Atomique (CEA) (France)
Centre National de la Recherche Scientifique (CNRS-IN2P3) (France)
Bundesministerium für Bildung und Forschung (BMBF) (Germany)
Deutsche Forschungsgemeinschaft (DFG) (Germany)
Istituto Nazionale di Fisica Nucleare (INFN) (Italy)
Fundamenteel Onderzoek der Materie (FOM) (Netherlands)
Research Council of Norway (NFR)
Ministry of Education and Science of the Russian Federation (MES)
Ministerio de Ciencia e Innovación (MICIIN) (Spain)
Science and Technology Facilities Council (United Kingdom)
Marie Curie EIF (European Union)
A. P. Sloan Foundation
Binational Science Foundation

Dates

Created
2010-09-17
Created from EPrint's datestamp field
Updated
2021-11-08
Created from EPrint's last_modified field