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Updates on B KX(3872) for BGM

Updates on B KX(3872) for BGM. S. L. Olsen U of Hawaii. S.-K. Choi Gyeongsang U. B 0  K s y ’. B -  K - y ’. B ± K ± X(3872); X p + p - J/ y. Nev=76.0 +13.1 -12.2 M = 3871.6 ± 0.7 MeV Signif. = 6.6 s. B 0 K s X(3872); X p + p - J/ y. Nev = 11.0 +4.8 -4.0

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Updates on B KX(3872) for BGM

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  1. Updates on BKX(3872)for BGM S. L. Olsen U of Hawaii S.-K. Choi Gyeongsang U

  2. B0  Ks y’

  3. B-  K- y’

  4. B±K± X(3872); Xp+p- J/y Nev=76.0 +13.1 -12.2 M = 3871.6 ± 0.7MeV Signif. = 6.6s

  5. B0Ks X(3872); Xp+p- J/y Nev = 11.0 +4.8 -4.0 M = 3871.5 ± 1.6 MeV Signif. = 2.6 s DM= 0.1 ± 1.7 MeV

  6. Ratio of Branching fractions Br(B0KSX) Br(B-K-X) from PDG 11.0 +4.8 -4.0 76.0 +13.1 -12.2 Nev(B0KSX) Nev(B-K-X) Nev(B0KS y’) Nev(B-K- y’) e (B-K-X) e (B0KSX) e (B-K-y’) e (B0KS y’) Br(B0KS y’) Br(B-K-y’) =   324.2 +19.3 -18.6 1841.5 +45.4 -45.1 Assume ~1 Br(B0KS y’) Br(B-K-y’) = 0.82 +0.39 -0.33

  7. Roofit Result with peaking Background • Ratio of Branching Fractions • Mass difference • DM= 0.1 ±1.7 MeV Br(B0KSX) Br(B-K-X) Br(B0KS y’) Br(B-K-y’) = 0.82 +0.39 -0.33

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