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)File | Dimensione | Formato | |
---|---|---|---|
PhysRevD.95.072007.pdf
Accesso aperto
Descrizione: articolo principale
Tipo di file:
PDF EDITORIALE
Dimensione
1.43 MB
Formato
Adobe PDF
|
1.43 MB | Adobe PDF | Visualizza/Apri |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.