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- W1570231881 abstract "We investigate the joint $ Lambda bar{Lambda}$ decay in the reaction $ e^{+} e^{-} rightarrow gamma Lambda(rightarrow ppi^{-}) bar{Lambda}(rightarrow bar{p}pi^{+})$ . This reaction may provide information on the electromagnetic form factors of the Lambda baryon, in the time-like region. We present a conventional diagram-based calculation where production and decay steps are coherent and summations over final-state proton and anti-proton spins are performed. The resulting cross-section distribution is explicitly covariant as it is expressed in scalar products of the four-momentum vectors of the participating particles. We compare this calculation with that of the folding method which we extend and make explicitly covariant. In the folding method production and decay distributions, not amplitudes, are folded together. Of particular importance is then a correct counting of the number of possible intermediate-hyperon-spin states." @default.
- W1570231881 created "2016-06-24" @default.
- W1570231881 creator A5042666462 @default.
- W1570231881 date "2015-07-01" @default.
- W1570231881 modified "2023-09-26" @default.
- W1570231881 title "Entanglement in joint $Lambda bar{Lambda}$ decay" @default.
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- W1570231881 doi "https://doi.org/10.1140/epja/i2015-15074-3" @default.
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