Measurement of time-dependent CP asymmetries in B{sup 0}{yields}D{sup (*){+-}}{pi}{sup {+-}} and B{sup 0}{yields}D{sup {+-}}{rho}{sup {+-}} decays

Journal Article · Thu Jun 01 00:00:00 EDT 2006 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.73.111101· OSTI ID:20774764

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. Universitat de Barcelona, Facultat Fisica Deptartament ECM, Avda Diagonal 647, 6a planta, E-08028 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 updated results on time-dependent CP asymmetries in fully reconstructed B{sup 0}{yields}D{sup (*){+-}}{pi}{sup {+-}} and B{sup 0}{yields}D{sup {+-}}{rho}{sup {+-}} decays in approximately 232x10{sup 6} {upsilon}(4S){yields}BB events collected with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC. From a time-dependent maximum-likelihood fit we obtain for the parameters related to the CP violation angle 2{beta}+{gamma}: a{sup D{pi}}=-0.010{+-}0.023{+-}0.007, c{sub lep}{sup D{pi}}=-0.033{+-}0.042{+-}0.012, a{sup D*{pi}}=-0.040{+-}0.023{+-}0.010, c{sub lep}{sup D*{pi}}=0.049{+-} 0.042{+-}0.015,a{sup D{rho}}=-0.024{+-}0.031{+-}0.009, c{sub lep}{sup D{rho}}=-0.098{+-}0.055{+-}0.018, where the first error is statistical and the second is systematic. Using other measurements and theoretical assumptions, we interpret the results in terms of the angles of the Cabibbo-Kobayashi-Maskawa unitarity triangle and find |sin(2{beta}+{gamma})|>0.64 (0.40) at 68% (90%) confidence level.

• OSTI ID: 20774764
• Journal Information: Physical Review. D, Particles Fields, Vol. 73, Issue 11; Other Information: DOI: 10.1103/PhysRevD.73.111101; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
B NEUTRAL MESONS
CP INVARIANCE
D*-2010 MESONS
ERRORS
HADRONIC PARTICLE DECAY
KOBAYASHI-MASKAWA MATRIX
MAXIMUM-LIKELIHOOD FIT
MULTIPARTICLE SPECTROMETERS
PARTICLE IDENTIFICATION
PEP STORAGE RINGS
PIONS MINUS
RESONANCE PARTICLES
SCORPIONS
TIME DEPENDENCE
UNITARITY