NUK - logo
E-viri
  • Inclusive and exclusive mea...
    Bhardwaj, V; Miyabayashi, K; Panzenbock, E; Trabelsi, K; Frey, A; Abdesselam, A; Adachi, I; Aihara, H; Said, S Al; Arinstein, K

    Physical review. D, 03/2016, Letnik: 93, Številka: 5
    Journal Article

    We report inclusive and exclusive measurements for chi sub(c 1) and chi sub(c 2) production in B decays. We measure Bernoulli(B arrowright chi sub(c 1)X)=(3.03+ or -0.05(stat)+ or -0.24(syst))x10 super(-3) and Bernoulli(B arrowright chi sub(c 2)X)=(0.70+ or -0.06(stat)+ or -0.10(syst))x10 super(?3). For the first time, chi sub(c 2) production in exclusive B decays in the modes B super(0) arrowright chi sub(c 2)pi super(-)K super(+) and B super(+) arrowright chi sub(c 2)pi super(+)pi super(-)K super(+) has been observed, along with first evidence for the B super(+) arrowright (ProQuest: Formulae and/or non-USASCII text omitted) decay mode. For chi sub(c 1) production, we report the first observation in the B super(+) arrowright chi sub(c 1)pi super(+)pi super(-)K super(+), B super(0) arrowright (ProQuest: Formulae and/or non-USASCII text omitted) and B super(0) arrowright chi sub(c 1)pi super(0)pi super(-)K super(+) decay modes. Using these decay modes, we observe a difference in the production mechanism of chi sub(c 2) in comparison to chi sub(c 1) in B decays. In addition, we report searches for X(3872) and chi sub(c 1)(2P) in the B super(+) arrowright (chi sub(c 1)pi super(+)pi super(?))K super(+) decay mode. The reported results use 772x10 super(6)BB events collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e super(+)e super(-) collider.