We study the processes , , and using a data sample of recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy collider at center-of-mass energies at and near the (, 3, 4) resonances. This is the first observation of the decay and we measure the branching fraction . Significant interference is observed between and the nonresonant two-photon process . A Dalitz plot analysis is performed of decays to , , and . Combined with our previous analysis of , we measure the parameters and the ratio between its and couplings. The decay is dominated by the resonance, also observed in radiative decays. A new resonance is observed in the channel. We also compare decays to and final states in association with scalar mesons as they relate to the identification of the scalar glueball.

Lees, J., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., et al. (2021). Light meson spectroscopy from Dalitz plot analyses of decays to , , and produced in two-photon interactions. PHYSICAL REVIEW D, 104(7) [10.1103/PhysRevD.104.072002].

Light meson spectroscopy from Dalitz plot analyses of decays to , , and produced in two-photon interactions

Carpinelli M.;
2021

Abstract

We study the processes , , and using a data sample of recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy collider at center-of-mass energies at and near the (, 3, 4) resonances. This is the first observation of the decay and we measure the branching fraction . Significant interference is observed between and the nonresonant two-photon process . A Dalitz plot analysis is performed of decays to , , and . Combined with our previous analysis of , we measure the parameters and the ratio between its and couplings. The decay is dominated by the resonance, also observed in radiative decays. A new resonance is observed in the channel. We also compare decays to and final states in association with scalar mesons as they relate to the identification of the scalar glueball.
Articolo in rivista - Articolo scientifico
BABAR
English
2021
104
7
072002
open
Lees, J., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., et al. (2021). Light meson spectroscopy from Dalitz plot analyses of decays to , , and produced in two-photon interactions. PHYSICAL REVIEW D, 104(7) [10.1103/PhysRevD.104.072002].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/393430
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