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Observation of a Charmed Baryon Decaying to D^0p at a Mass Near 2:94 GeV/c^2

Aubert, B. and Albert, J. and Chen, E. and Dvoretskii, A. and Hitlin, D. G. and Narsky, I. and Piatenko, T. and Porter, F. C. and Ryd, A. and Samuel, A. (2007) Observation of a Charmed Baryon Decaying to D^0p at a Mass Near 2:94 GeV/c^2. Physical Review Letters, 98 (1). Art. No. 012001. ISSN 0031-9007. doi:10.1103/PhysRevLett.98.012001.

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A search for charmed baryons decaying to D^0p reveals two states: the Λ_c(2880)^+ baryon and a previously unobserved state at a mass of [2939.8±1.3(stat)±1.0(syst)]  MeV/c^2 and with an intrinsic width of [17.5±5.2(stat)±5.9(syst)]  MeV. Consistent and significant signals are observed for the K^-π^+ and K^-π^+π^-π^+ decay modes of the D^0 in 287  fb^(-1) annihilation data recorded by the BABAR detector at a center-of-mass energy of 10.58 GeV. There is no evidence in the D^+p spectrum of doubly charged partners. The mass and intrinsic width of the Λ_c(2880)^+ baryon and relative yield of the two baryons are also measured.

Item Type:Article
Related URLs:
URLURL TypeDescription
Hitlin, D. G.0000-0003-4028-6982
Porter, F. C.0000-0003-1948-8889
Additional Information:© 2007 The American Physical Society. Received 25 March 2006; published 4 January 2007. 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), IHEP (China), CEA and CNRS-IN2P3 (France), BMBF and DFG (Germany), INFN (Italy), FOM (The Netherlands), NFR (Norway), MIST (Russia), and PPARC (United Kingdom). Individuals have received support from CONACyT (Mexico), Marie Curie EIF (European Union), the A. P. Sloan Foundation, the Research Corporation, and the Alexander von Humboldt Foundation.
Funding AgencyGrant Number
Department of EnergyUNSPECIFIED
NSERC-IN2P3 (Centre National de la Recherche Scientifique (National Center for Scientific Research, France) Institut National de Physique Nucléaire et Physique des Particules (France)UNSPECIFIED
BMBF (Bundesministerium für Bildung und Forschung (German: Federal Ministry of Education and Research; Bonn, Germany)UNSPECIFIED
NFR (Research Council of Norway)UNSPECIFIED
Marie Curie EIF (European Union)UNSPECIFIED
A. P. Sloan FoundationUNSPECIFIED
Research CorporationUNSPECIFIED
Alexander von Humboldt FoundationUNSPECIFIED
Issue or Number:1
Classification Code:PACS:14.20.Lq, 13.85.Ni
Record Number:CaltechAUTHORS:20100927-100113461
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:20155
Deposited By: Ruth Sustaita
Deposited On:29 Sep 2010 19:36
Last Modified:08 Nov 2021 23:57

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