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Observation of an excited $$Omega^-$$ Baryon

励起$$Omega^-$$バリオンの発見

Yelton, J.*; 谷田 聖; Belle Collaboration*; 他190名*

Yelton, J.*; Tanida, Kiyoshi; Belle Collaboration*; 190 of others*

Using data recorded with the Belle detector, we observe a new excited hyperon, an $$Omega^{*-}$$ candidate decaying into $$Xi^0K^-$$ and $$Xi^-K^0_S$$ with a mass of $$2012.4pm0.7 {rm (stat)pm 0.6 (rm syst)} {rm MeV}/c^2$$ and a width of $$Gamma=6.4^{+2.5}_{-2.0} {rm(stat)}pm1.6 {rm(syst)} {rm MeV}$$. The $$Omega^{*-}$$ is seen primarily in $$Upsilon(1S), Upsilon(2S)$$, and $$Upsilon(3S)$$ decays.

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パーセンタイル:6.69

分野:Physics, Multidisciplinary

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