Determination of the Lambda(c)+ spin via the reaction e(+)e(-) -> Lambda(c)(Lambda)over-bar(c)
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Erişim
info:eu-repo/semantics/openAccessAttribution-NoDerivs 3.0 United Stateshttp://creativecommons.org/licenses/by-nd/3.0/us/Tarih
2021Üst veri
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BESIII Collaboration. (2021). Determination of the Λc+ spin via the reaction e+ e-→ Λc Λ¯ c. Physical Review D, 103(9), L091101.Özet
We report on a comparison of two possible Lambda(+)(c) spin hypotheses, J = 1/2 and 3/2, via the process e(+)e(-) -> Lambda(c)(Lambda) over bar (c) using the angular distributions of Lambda(+)(c) decays into pK(S)(0), Lambda pi(+), Sigma(0)pi(+) and Sigma(+)pi(0). The data were recorded at root sp = 4.6 GeV with the BESIII detector and correspond to an integrated luminosity of 587 pb(-1). The. thornc spin is determined to be J = 1/2, with this value favored over the 3 2 hypothesis with a significance corresponding to more than 6 Gaussian standard deviations.
Kaynak
Physical Review DCilt
103Sayı
9Koleksiyonlar
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