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Dalitz plot analysis of ηc→K+K−η and ηc→K+K−π0 in two-photon interactions
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BaBar Collaboration (Including: Gershon, T. J., Harrison, P. F. and Latham, Thomas). (2014) Dalitz plot analysis of ηc→K+K−η and ηc→K+K−π0 in two-photon interactions. Physical Review D (Particles, Fields, Gravitation and Cosmology), 89 (11). 112004. doi:10.1103/PhysRevD.89.112004 ISSN 1550-7998.
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Official URL: http://dx.doi.org/10.1103/PhysRevD.89.112004
Abstract
We study the processes γγ→K+K−η and γγ→K+K−π0 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 ηc→K+K−π0 and ηc→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 ηc→K+K−η and K∗0(1430)→Kη results correspond to the first observations of these channels. The data also show evidence for ηc(2S)→K+K−π0 and first evidence for ηc(2S)→K+K−η.
Item Type: | Journal Article | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Journal or Publication Title: | Physical Review D (Particles, Fields, Gravitation and Cosmology) | ||||
Publisher: | American Physical Society | ||||
ISSN: | 1550-7998 | ||||
Official Date: | 16 June 2014 | ||||
Dates: |
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Volume: | 89 | ||||
Number: | 11 | ||||
Article Number: | 112004 | ||||
DOI: | 10.1103/PhysRevD.89.112004 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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