Measurement of CP observables for the decays B{sup {+-}}{yields}D{sub CP}{sup 0}K{sup {+-}}

Journal Article · Wed Mar 01 04:00:00 EST 2006 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.73.051105· OSTI ID:20776821

Aubert, B; Barate, R; Boutigny, D; Couderc, F; Karyotakis, Y; Lees, J P; Poireau, V; Tisserand, V; Zghiche, A ^[1]; Grauges, E ^[2]; Palano, A; Pappagallo, M ^[3]; Chen, J C; Qi, N D; Rong, G; Wang, P; Zhu, Y S ^[4]; Eigen, G; Ofte, I; Stugu, B ^[5]

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1. Laboratoire de Physique des Particules, F-74941 Annecy-le-Vieux (France)
2. IFAE, Universitat Autonoma de Barcelona, E-08193 Bellaterra, Barcelona (Spain)
3. Universita di Bari, Dipartimento di Fisica and INFN, I-70126 Bari (Italy)
4. Institute of High Energy Physics, Beijing 100039 (China)
5. University of Bergen, Institute of Physics, N-5007 Bergen (Norway)

We present a study of the decay B{sup -}{yields}D{sub (CP)}{sup 0}K{sup -} and its charge conjugate, where D{sub (CP)}{sup 0} is reconstructed in CP-even, CP-odd, and non-CP flavor eigenstates, based on a sample of 232x10{sup 6} {upsilon}(4S){yields}BB decays collected with the BABAR detector at the PEP-II e{sup +}e{sup -} storage ring. We measure the partial-rate charge asymmetries A{sub CP{+-}} and the ratios R{sub CP{+-}} of the B{yields}D{sup 0}K decay branching fractions as measured in CP{+-} and non-CP D{sup 0} decays: A{sub CP+}=0.35{+-}0.13(stat){+-}0.04(syst), A{sub CP-}=-0.06{+-}0.13(stat){+-}0.04(syst), R{sub CP+}=0.90{+-}0.12(stat){+-}0.04(syst), and R{sub CP-}=0.86{+-}0.10(stat){+-}0.05(syst)

• OSTI ID: 20776821
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 5 Vol. 73; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
B MINUS MESONS
B PLUS MESONS
BRANCHING RATIO
CP INVARIANCE
D NEUTRAL MESONS
EIGENFUNCTIONS
EIGENSTATES
EIGENVALUES
ELECTRON-POSITRON INTERACTIONS
HADRONIC PARTICLE DECAY
PEP STORAGE RINGS
RESONANCE PARTICLES