We study the processes π+β’πββπΎ+β’πΎββ’π0β’π0β’π0β’πΎ, πΎ0 πβ’πΎΒ±β’πββ’π0β’π0β’πΎ, and πΎ0 πβ’πΎΒ±β’πββ’π+β’πββ’πΎ in which an energetic photon is radiated from the initial state. The data were collected with the BABAR detector at the SLAC National Accelerator Laboratory. About 1200, 2600, and 6000 events, respectively, are selected from a data sample corresponding to an integrated luminosity of 469ββfbβ1. The invariant mass of the hadronic final state defines the effective π+β’πβ center-of-mass energy. The center-of-mass energies range from threshold to 4.5 GeV. From the mass spectra, the first ever measurements of the π+β’πββπΎ+β’πΎββ’π0β’π0β’π0, π+β’πββπΎ0 πβ’πΎΒ±β’πββ’π0β’π0, and π+β’πββπΎ0 πβ’πΎΒ±β’πββ’π+β’πβ cross sections are performed. The contributions from the intermediate states that include π, π, π, πΎ*β‘(892), and other resonances are presented. We observe the π½/π and πβ‘(2β’π) in most of these final states and measure the corresponding branching fractions, many of them for the first time.
Lees, J.P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., et al. (2023). Study of the reactions π+β’πββπΎ+β’πΎββ’π0β’π0β’π0, π+β’πββπΎ0 πβ’πΎΒ±β’πββ’π0β’π0, and π+β’πββπΎ0 πβ’πΎΒ±β’πββ’π+β’πβ at center-of-mass energies from threshold to 4.5 GeV using initial-state radiation. PHYSICAL REVIEW D, 107(7), 1-17 [10.1103/PhysRevD.107.072001].
Study of the reactions π+β’πββπΎ+β’πΎββ’π0β’π0β’π0, π+β’πββπΎ0 πβ’πΎΒ±β’πββ’π0β’π0, and π+β’πββπΎ0 πβ’πΎΒ±β’πββ’π+β’πβ at center-of-mass energies from threshold to 4.5 GeV using initial-state radiation
Patrignani, C;
2023
Abstract
We study the processes π+β’πββπΎ+β’πΎββ’π0β’π0β’π0β’πΎ, πΎ0 πβ’πΎΒ±β’πββ’π0β’π0β’πΎ, and πΎ0 πβ’πΎΒ±β’πββ’π+β’πββ’πΎ in which an energetic photon is radiated from the initial state. The data were collected with the BABAR detector at the SLAC National Accelerator Laboratory. About 1200, 2600, and 6000 events, respectively, are selected from a data sample corresponding to an integrated luminosity of 469ββfbβ1. The invariant mass of the hadronic final state defines the effective π+β’πβ center-of-mass energy. The center-of-mass energies range from threshold to 4.5 GeV. From the mass spectra, the first ever measurements of the π+β’πββπΎ+β’πΎββ’π0β’π0β’π0, π+β’πββπΎ0 πβ’πΎΒ±β’πββ’π0β’π0, and π+β’πββπΎ0 πβ’πΎΒ±β’πββ’π+β’πβ cross sections are performed. The contributions from the intermediate states that include π, π, π, πΎ*β‘(892), and other resonances are presented. We observe the π½/π and πβ‘(2β’π) in most of these final states and measure the corresponding branching fractions, many of them for the first time.| File | Dimensione | Formato | |
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