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Dalitz plot analysis of η_c → K^+K^−η and η_c → K^+K^−π^0 in two-photon interactions

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) Dalitz plot analysis of η_c → K^+K^−η and η_c → K^+K^−π^0 in two-photon interactions. Physical Review D, 89 (11). Art. No. 112004. ISSN 2470-0010. https://resolver.caltech.edu/CaltechAUTHORS:20140718-112248167

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Abstract

We study the processes γγ→K^+K^−η and γγ→K^+K^−π^0 using a data sample of 519  fb^(−1) recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy e^+e^− collider at center-of-mass energies at and near the Υ(nS) (n=2,3,4) resonances. We observe η_c→K^+K^−π^0 and η_c→K^+K^−η decays, measure their relative branching fraction, and perform a Dalitz plot analysis for each decay. We observe the K^∗_0(1430)→Kη decay and measure its branching fraction relative to the Kπ decay mode to be R(K^∗_0(1430))=^(B(K^∗_0(1430)→Kη))_(B(K^∗_0(1430)→Kπ))=0.092±0.025^(+0.010)_(−0.025). The η_c→K^+K^−η and K^∗_0(1430)→Kη results correspond to the first observations of these channels. The data also show evidence for η_c(2S)→K^+K^−π^0 and first evidence for η_c(2S)→K^+K^−η.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://journals.aps.org/prd/abstract/10.1103/PhysRevD.89.112004PublisherArticle
http://dx.doi.org/10.1103/PhysRevD.89.112004 DOIArticle
http://arxiv.org/abs/1403.7051arXivDiscussion Paper
ORCID:
AuthorORCID
Hitlin, D. G.0000-0003-4028-6982
Porter, F. C.0000-0003-1948-8889
Additional Information:© 2014 American Physical Society. Published 16 June 2014. Received 27 March 2014. We are grateful for the extraordinary contributions of our PEP-II2 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 Economia y Competitividad (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
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 Economia y Competitividad (MINECO)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.Gv, 14.40.Be, 14.40.Df, 14.40.Pq
Record Number:CaltechAUTHORS:20140718-112248167
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140718-112248167
Official Citation:Dalitz plot analysis of ηc→K+K−η and ηc→K+K−π0 in two-photon interactions J. P. Lees et al. (The BABAR Collaboration) Phys. Rev. D 89, 112004 (2014) – Published 16 June 2014
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:47326
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:18 Jul 2014 20:20
Last Modified:03 Oct 2019 06:52

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