Measurement of the branching fraction and the CP-violating asymmetry for the decay B{sup 0}{yields}K{sub S}{sup 0}{pi}{sup 0}

Journal Article · Wed Jun 01 04:00:00 EDT 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.71.111102· OSTI ID:20709422

Aubert, B; Barate, R; Boutigny, D; Couderc, F; Karyotakis, Y; Lees, J P; Poireau, V; Tisserand, V; Zghiche, A ^[1]; Grauges-Pous, E ^[2]; Palano, A; Pappagallo, M; Pompili, A ^[3]; Chen, J C; Qi, N D; Rong, G; Wang, P; Zhu, Y S ^[4]; Eigen, G; Ofte, I ^[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, Inst. of Physics, N-5007 Bergen (Norway); and others

We measure the branching fraction and the CP-violating asymmetry of B{sup 0}{yields}K{sub S}{sup 0}{pi}{sup 0} decays with 227 million {upsilon}(4S){yields}BB events collected with the BABAR detector at the PEP-II asymmetric-energy e{sup +}e{sup -} collider at SLAC. We obtain a branching fraction B(B{sup 0}{yields}K{sup 0}{pi}{sup 0})=(11.4{+-}0.9{+-}0.6)x10{sup -6} and CP-violating asymmetry parameters C{sub K{sub S}{sup 0}}{pi}{sup 0}=0.06{+-}0.18{+-}0.03 and S{sub K{sup 0}}{pi}{sup 0}=0.35{sub -0.33}{sup +0.30}{+-}0.04, where the first error is statistical and the second systematic.

• OSTI ID: 20709422
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 11 Vol. 71; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
B NEUTRAL MESONS
BRANCHING RATIO
CP INVARIANCE
ELECTRON-POSITRON INTERACTIONS
KAONS NEUTRAL SHORT-LIVED
MULTIPARTICLE SPECTROMETERS
PARTICLE DECAY
PARTICLE IDENTIFICATION
PEP STORAGE RINGS
PIONS NEUTRAL
UPSILON-10580 MESONS