Measurements of branching fractions and CP-violating asymmetries in B0 → π+π-, K+π-, K+K- decays
Skip to main content
eScholarship
Open Access Publications from the University of California

UC Berkeley

UC Berkeley Previously Published Works bannerUC Berkeley

Measurements of branching fractions and CP-violating asymmetries in B0 → π+π-, K+π-, K+K- decays

  • Author(s): Aubert, B
  • Boutigny, D
  • Gaillard, JM
  • Hicheur, A
  • Karyotakis, Y
  • Lees, JP
  • Robbe, P
  • 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
  • Gill, MS
  • Gritsan, AV
  • Groysman, Y
  • Jacobsen, RG
  • Kadel, RW
  • Kadyk, J
  • Kerth, LT
  • Kolomensky, YG
  • Kral, JF
  • LeClerc, C
  • Levi, ME
  • Lynch, G
  • Mir, LM
  • Oddone, PJ
  • Orimoto, TJ
  • Pripstein, M
  • Roe, NA
  • Romosan, A
  • Ronan, MT
  • Shelkov, VG
  • Telnov, AV
  • Wenzel, WA
  • Harrison, TJ
  • Hawkes, CM
  • Knowles, DJ
  • O'Neale, SW
  • Penny, RC
  • Watson, AT
  • Watson, NK
  • Deppermann, T
  • Goetzen, K
  • Koch, H
  • Lewandowski, B
  • Peters, K
  • Schmuecker, H
  • Steinke, M
  • Barlow, NR
  • Bhimji, W
  • Boyd, JT
  • Chevalier, N
  • Clark, PJ
  • Cottingham, WN
  • Mackay, C
  • Wilson, FF
  • Abe, K
  • Hearty, C
  • Mattison, TS
  • McKenna, JA
  • Thiessen, D
  • Jolly, S
  • McKemey, AK
  • Blinov, VE
  • Bukin, AD
  • Buzykaev, AR
  • Golubev, VB
  • Ivanchenko, VN
  • Korol, AA
  • Kravchenko, EA
  • Onuchin, AP
  • Serednyakov, SI
  • Skovpen, YI
  • Yushkov, AN
  • Best, D
  • Chao, M
  • Kirkby, D
  • Lankford, AJ
  • Mandelkern, M
  • McMahon, S
  • Stoker, DP
  • Buchanan, C
  • Chun, S
  • Hadavand, HK
  • Hill, EJ
  • MacFarlane, DB
  • et al.
Abstract

We present measurements of branching fractions and CP-violating asymmetries for neutral B meson decays to two-body final states of charged pions and kaons based on a sample of about 88 million Y(4S)-->BB decays. From a time-independent fit we measure the charge-averaged branching fractions B(B0-->pi+pi-) = (4.7 +/- 0.6 +/- 0.2) x 10^-6, B(B0-->K+pi-) = (17.9 +/- 0.9 +/- 0.7) x 10^-6, and the direct CP-violating charge asymmetry A(Kpi) = -0.102 +/- 0.050 +/- 0.016; [-0.188,-0.016], where the ranges in square brackets indicate the 90% confidence intervals. From a time-dependent fit we measure the B0-->pi+pi- CP-violating parameters Spipi = 0.02 +/- 0.34 +/- 0.05; [-0.54,+0.58] and Cpipi = -0.30 +/- 0.25 +/- 0.04; [-0.72,+0.12].

Many UC-authored scholarly publications are freely available on this site because of the UC's open access policies. Let us know how this access is important for you.

Main Content
Current View