We study the processes e+e− ! γISRJ/ψ where J/ψ ! π+π−π0, J/ψ ! K+K−π0, and J/ψ ! K0 SK±π∓ 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 measure the ratio of branching fractions R1 = B(J/ ! K+K−0) B(J/ ! +−0) and R2 = B(J/ ! K0 SK±∓) B(J/ ! +−0) . We perform Dalitz-plot analyses of the three J/ψ decay modes and measure fractions for resonances contributing to the decays. We also analyze the J/ψ ! π+π−π0 decay using the Veneziano model. We observe structures compatible with the presence of ρ(1450)

Dalitz plot analyses of J/ψ→π+π−π0 , J/ψ→K+K−π0 , and J/ψ→Ks0K±π∓ produced via e+e− annihilation with initial-state radiation

BIANCHI, Fabrizio;DE MORI, FRANCESCA;GAMBA, Diego;
2017-01-01

Abstract

We study the processes e+e− ! γISRJ/ψ where J/ψ ! π+π−π0, J/ψ ! K+K−π0, and J/ψ ! K0 SK±π∓ 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 measure the ratio of branching fractions R1 = B(J/ ! K+K−0) B(J/ ! +−0) and R2 = B(J/ ! K0 SK±∓) B(J/ ! +−0) . We perform Dalitz-plot analyses of the three J/ψ decay modes and measure fractions for resonances contributing to the decays. We also analyze the J/ψ ! π+π−π0 decay using the Veneziano model. We observe structures compatible with the presence of ρ(1450)
2017
95
7
072007
072026
Charmonium
Lees, J. p.; Poireau, V.; Tisserand, V.; Grauges, E.; Palano, A.; Eigen, G.; Brown, D. n.; Kolomensky, Yu. g.; Fritsch, M.; Koch, H.; Schroeder, T.; H...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1636354
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