This title appears in the Scientific Report :
2021
Please use the identifier:
http://dx.doi.org/10.1103/PhysRevD.103.014028 in citations.
Please use the identifier: http://hdl.handle.net/2128/27645 in citations.
Hyperon electromagnetic form factors in the timelike region
Hyperon electromagnetic form factors in the timelike region
Electromagnetic form factors of hyperons (Λ, Σ, Ξ) in the timelike region, accessible in the reaction e+e−→¯YY, are studied. The focus is on energies close to the reaction thresholds, where the properties of these form factors are significantly influenced by the interaction in the final ¯YY system....
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Personal Name(s): | Haidenbauer, Johann (Corresponding author) |
---|---|
Meißner, Ulf-G. / Dai, Ling-Yun | |
Contributing Institute: |
Theorie der Starken Wechselwirkung; IAS-4 Theorie der starken Wechselwirkung; IKP-3 |
Published in: | Physical Review D Physical review / D, 103 103 (2021 2021) 1 1, S. 014028 014028 |
Imprint: |
Melville, NY
Inst.812068
2021
2021-01-28 2021-01-01 |
DOI: |
10.1103/PhysRevD.103.014028 |
Document Type: |
Journal Article |
Research Program: |
TRR 110: Symmetrien und Strukturbildung in der Quantenchromodynamik Domain-Specific Simulation & Data Life Cycle Labs (SDLs) and Research Groups |
Link: |
OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/27645 in citations.
Electromagnetic form factors of hyperons (Λ, Σ, Ξ) in the timelike region, accessible in the reaction e+e−→¯YY, are studied. The focus is on energies close to the reaction thresholds, where the properties of these form factors are significantly influenced by the interaction in the final ¯YY system. This interaction is taken into account in the calculation, utilizing ¯YY potential models that have been constructed by the Jülich group for the analysis of data from the reaction ¯pp→¯YY in the past. The enhancement of the effective form factor for energies close to the threshold, seen in experiments of e+e−→¯ΛΛ and e+e−→¯Σ0Λ, is reproduced. With regard to the reactions e+e−→¯Σ−Σ+, ¯Σ0Σ0, ¯Σ+Σ− a delicate interplay between the three channels is observed in the results at low energies, caused by the ¯ΣΣ interaction. Predictions for the electromagnetic form factors GM and GE in the timelike region are presented for the Λ, Σ, and Ξ hyperons. |