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Title: | Study of e+e− → Λ¯Λ, Λ¯Σ0, Σ0¯Σ0 using initial state radiation with BABAR |
Author: | Garra Ticó, Jordi Graugés Pous, Eugeni BABAR Collaboration |
Keywords: | Física de partícules Experiments Particle physics Experiments |
Issue Date: | 27-Nov-2007 |
Publisher: | American Physical Society |
Abstract: | We study the e + e − → Λ ¯¯¯ Λ γ , Λ ¯¯¯ Σ 0 γ , Σ 0 ¯¯¯ Σ 0 γ processes using 230 fb − 1 of integrated luminosity collected by the BABAR detector at e + e − center-of-mass energy of 10.58 GeV. From the analysis of the baryon-antibaryon mass spectra the cross sections for e + e − → Λ ¯¯¯ Λ , Λ ¯¯¯ Σ 0 , Σ 0 ¯¯¯ Σ 0 are measured in the dibaryon mass range from threshold up to 3 GeV / c 2 . The ratio of electric and magnetic form factors, | G E / G M | , is measured for e + e − → Λ ¯¯¯ Λ , and limits on the relative phase between Λ form factors are obtained. We also measure the J / ψ → Λ ¯¯¯ Λ , Σ 0 ¯¯¯ Σ 0 , and ψ ( 2 S ) → Λ ¯¯¯ Λ branching fractions. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.76.092006 |
It is part of: | Physical Review D, 2007, vol. 76, num. 9, p. 092006 |
URI: | http://hdl.handle.net/2445/128606 |
Related resource: | https://doi.org/10.1103/PhysRevD.76.092006 |
ISSN: | 1550-7998 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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558173.pdf | 1.16 MB | Adobe PDF | View/Open |
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