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Measurements of the branching fraction and CP-violation asymmetries in B0f0(980)KS0

  • Author(s): Aubert, B
  • Barate, R
  • Boutigny, D
  • Couderc, F
  • Gaillard, JM
  • Hicheur, A
  • Karyotakis, Y
  • Lees, JP
  • Tisserand, V
  • Zghiche, A
  • Palano, A
  • Pompili, A
  • Chen, JC
  • Qi, ND
  • Rong, G
  • Wang, P
  • Zhu, YS
  • Eigen, G
  • Ofte, I
  • Stugu, B
  • Abrams, GS
  • Borgland, AW
  • Breon, AB
  • Brown, DN
  • Button-Shafer, J
  • Cahn, RN
  • Charles, E
  • Day, CT
  • Gill, MS
  • Gritsan, AV
  • Groysman, Y
  • Jacobsen, RG
  • Kadel, RW
  • Kadyk, J
  • Kerth, LT
  • Kolomensky, YG
  • Kukartsev, G
  • Lynch, G
  • Mir, LM
  • Oddone, PJ
  • Orimoto, TJ
  • Pripstein, M
  • Roe, NA
  • Ronan, MT
  • Shelkov, VG
  • Wenzel, WA
  • Barrett, M
  • Ford, KE
  • Harrison, TJ
  • Hart, AJ
  • Hawkes, CM
  • Morgan, SE
  • Watson, AT
  • Fritsch, M
  • Goetzen, K
  • Held, T
  • Koch, H
  • Lewandowski, B
  • Pelizaeus, M
  • Steinke, M
  • Boyd, JT
  • Chevalier, N
  • Cottingham, WN
  • Kelly, MP
  • Latham, TE
  • Wilson, FF
  • Cuhadar-Donszelmann, T
  • Hearty, C
  • Knecht, NS
  • Mattison, TS
  • McKenna, JA
  • Thiessen, D
  • Khan, A
  • Kyberd, P
  • Teodorescu, L
  • Blinov, VE
  • Druzhinin, VP
  • Golubev, VB
  • Ivanchenko, VN
  • Kravchenko, EA
  • Onuchin, AP
  • Serednyakov, SI
  • Skovpen, YI
  • Solodov, EP
  • Yushkov, AN
  • Best, D
  • Bruinsma, M
  • Chao, M
  • Eschrich, I
  • Kirkby, D
  • Lankford, AJ
  • Mandelkern, M
  • Mommsen, RK
  • Roethel, W
  • Stoker, DP
  • Buchanan, C
  • Hartfiel, BL
  • Foulkes, SD
  • Gary, JW
  • Shen, BC
  • et al.
Abstract

We present measurements of the branching fraction and CP-violating asymmetries in the decay B0→ f0(980)Ks0. The results are obtained from a data sample of 123 × 106Y(4S) → BB̄ decays. From a time-dependent maximum likelihood fit, we measure the branching fraction B(B0→ f0(980)(→ π+π-)K0) = (6.0 ± 0.9 ± 0.6 ± 1.2) × 10-6, the mixing-induced CP violation parameter S = -1.62-0.51+0.56± 0.09 ± 0.04, and the direct CP violation parameter C = 0.27 ± 0.36 ± 0.10 ± 0.07, where the first errors are statistical, the second systematic, and the third due to model uncertainties. We measure the f0(980) mass and width to be mf(980) = (980.6±4.1± 0.5±4.0)MeV/c2and Γf0(980) = (43-9+12±3±9) MeV/c2, respectively. © 2005 The American Physical Society.

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