Measurement of CP asymmetry in B{sup 0}{yields}K{sub s}{sup 0}{pi}{sup 0}{pi}{sup 0} decays

Journal Article · Mon Oct 01 00:00:00 EDT 2007 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.76.071101· OSTI ID:21032297

Aubert, B; Bona, M; Boutigny, D; Karyotakis, Y; Lees, J P; Poireau, V; Prudent, X; Tisserand, V; Zghiche, A ^[1]; Grauges, E ^[2]; Palano, A ^[3]; Chen, J C; Qi, N D; Rong, G; Wang, P; Zhu, Y S ^[4]; Eigen, G; Ofte, I; Stugu, B ^[5]; Abrams, G S ^[6]

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1. Laboratoire de Physique des Particules, IN2P3/CNRS et Universite de Savoie, F-74941 Annecy-Le-Vieux (France)
2. Universitat de Barcelona, Facultat de Fisica, Departament ECM, 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)
6. Lawrence Berkeley National Laboratory and University of California, Berkeley, California 94720 (United States)

We present a measurement of the time-dependent CP asymmetry for the neutral B-meson decay into the CP=+1 final state K{sub S}{sup 0}{pi}{sup 0}{pi}{sup 0}, with K{sub S}{sup 0}{yields}{pi}{sup +}{pi}{sup -}. We use a sample of approximately 227 million B-meson pairs recorded at the {upsilon}(4S) resonance with the BABAR detector at the PEP-II B-Factory at SLAC. From an unbinned maximum likelihood fit, we extract the mixing-induced CP-violation parameter S=0.72{+-}0.71{+-}0.08 and the direct CP-violation parameter C=0.23{+-}0.52{+-}0.13, where the first uncertainty is statistical and the second systematic.

• OSTI ID: 21032297
• Journal Information: Physical Review. D, Particles Fields, Vol. 76, Issue 7; Other Information: DOI: 10.1103/PhysRevD.76.071101; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA). BABAR Collaboration; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
B MESONS
CP INVARIANCE
ELECTRON-POSITRON INTERACTIONS
HADRONIC PARTICLE DECAY
KAONS NEUTRAL SHORT-LIVED
MAXIMUM-LIKELIHOOD FIT
MESON FACTORIES
MULTIPARTICLE SPECTROMETERS
PARTICLE IDENTIFICATION
PEP STORAGE RINGS
PIONS MINUS
PIONS NEUTRAL
PIONS PLUS
QUANTUM CHROMODYNAMICS
RESONANCE PARTICLES
TIME DEPENDENCE
UPSILON-10580 MESONS