Dalitz plot analysis of eta(c) -> K+K-eta and eta(c) -> K+K-pi(0) in two-photon interactions

作者：Lees J P^*; Poireau V; Tisserand V; Grauges E; Palano A; Eigen G; Stugu B; Brown D N; Kerth L T; Kolomensky Yu G; Lee M J; Lynch G; Koch H; Schroeder T; Hearty C; Mattison T S; McKenna J A; So R Y; Khan A; Blinov V E; Buzykaev A R; Druzhinin V P; Golubev V B; Kravchenko E A; Onuchin A P; Serednyakov S I; Skovpen Yu I; Solodov E P; Todyshev K Yu; Lankford A J; Mandelkern M; Dey B; Gary J W; Long O

来源：Physical Review D - Particles, Fields, Gravitation and Cosmology, 2014, 89(11): 112004.

DOI：10.1103/PhysRevD.89.112004

We study the processes gamma gamma -> K+K-eta and gamma gamma -> K+K-pi(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 Upsilon(nS) (n = 2, 3, 4) resonances. We observe eta(c) -> K+K-pi(0) and eta(c) -> K+K-eta decays, measure their relative branching fraction, and perform a Dalitz plot analysis for each decay. We observe the K*(0)(1430) -> K eta decay and measure its branching fraction relative to the K pi decay mode to be R(K*(0)(1430)) = B(K*(0)(1430)-> K eta)/B(K*(0)(1430)-> K pi) = 0.092 +/- 0.025(- 0.025)(+0.010).

• 出版日期2014-6-16
• 单位中国地震局