Dalitz Plot Analysis of η_c → K⁺K⁻η and η_c → K⁺K⁻π⁰ in Two-Photon Interactions

DSpace/Manakin Repository

Dalitz Plot Analysis of η_c → K⁺K⁻η and η_c → K⁺K⁻π⁰ in Two-Photon Interactions

Show full item record

Title: Dalitz Plot Analysis of η_c → K⁺K⁻η and η_c → K⁺K⁻π⁰ in Two-Photon Interactions
Author(s):
Lees, J. P.;
Poireau, V.;
Tisserand, V.;
Grauges, E.;
Palano, A.;
Eigen, G.;
Stugu, B.;
Izen, Joseph M. (UT Dallas);
Lou, Xinchou (UT Dallas)
Format: Text
Item Type: Article
Keywords: Show Keywords
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 η_c → K⁺K⁻π⁰ and η_c → K⁺K⁻η decays, measure their relative branching fraction, and perform a Dalitz plot analysis for each decay. We observe the K₀*(1430) → K η decay and measure its branching fraction relative to the K π decay mode to be R(K₀*(1430)) = ℬ(K₀*(1430) → K η) / ℬ(K₀*(1430) → K π) = 0.092 ± 0.025_(-0.025)^(+0.010). The η_c → K⁺K⁻η and K₀*(1430) → Kη results correspond to the first observations of these channels. The data also show evidence for η_c(2S) → K⁺K⁻π⁰ and first evidence for η_c(2S) → K⁺K⁻η.
Publisher: American Physical Society
ISSN: 1550-7998
Persistent Link: http://dx.doi.org/10.1103/PhysRevD.89.112004
http://hdl.handle.net/10735.1/4160
Bibliographic Citation: Lees, J. P., V. Poireau, V. Tisserand, E. Grauges, et al. 2014. "Dalitz plot analysis of η_c → K⁺K⁻η and η_c → K⁺K⁻π⁰ in two-photon interactions." Physical Review D 89(11), doi:10.1103/PhysRevD.89.112004
Terms of Use: ©2014 American Physical Society

Files in this item

Files Size Format View
NSM-FR-XLou-271274.34.pdf 1.519Mb PDF View/Open Article

This item appears in the following Collection(s)


Show full item record