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Study of e+e-→ΛΛ¯, ΛΣ¯0, Σ0Σ¯0 using initial state radiation with BABAR

Aubert, B. et al. (2007) Study of e+e-→ΛΛ¯, ΛΣ¯0, Σ0Σ¯0 using initial state radiation with BABAR. Physical Review D, 76 (9). 092006. ISSN 1550-7998

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We study the e+e-→ΛΛ̅ γ, ΛΣ̅ 0γ, Σ0Σ̅ 0γ 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-→ΛΛ̅ , ΛΣ̅ 0, Σ0Σ̅ 0 are measured in the dibaryon mass range from threshold up to 3  GeV/c2. The ratio of electric and magnetic form factors, |GE/GM|, is measured for e+e-→ΛΛ̅ , and limits on the relative phase between Λ form factors are obtained. We also measure the J/ψ→ΛΛ̅ , Σ0Σ̅ 0, and ψ(2S)→ΛΛ̅ branching fractions.

Item Type: Article
Subjects: Q Science > QC Physics
Schools: School of Applied Sciences
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Depositing User: Sharon Beastall
Date Deposited: 15 Dec 2011 12:31
Last Modified: 28 Aug 2021 11:12


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