Using events collected by the Beijing Spectrum III (BESIII) detector at the Beijing Electron Positron Collider II (BEPCII) collider, we search for the hyperon semileptonic decay . No significant signal is observed and the upper limit on the branching fraction is set to be at 90% confidence level. This result is one order of magnitude more strict than the previous best limit.
Search for the hyperon semileptonic decay Xi(-) -> Xi(0)e(-) (nu)over-bar(e)
Garzia I.;Scodeggio M.;
2021
Abstract
Using events collected by the Beijing Spectrum III (BESIII) detector at the Beijing Electron Positron Collider II (BEPCII) collider, we search for the hyperon semileptonic decay . No significant signal is observed and the upper limit on the branching fraction is set to be at 90% confidence level. This result is one order of magnitude more strict than the previous best limit.File in questo prodotto:
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PhysRevD.104.072007.pdf
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