B meson decays to charmless meson pairs containing {eta} or {eta}' mesons

Journal Article · Tue Dec 01 04:00:00 EST 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.80.112002· OSTI ID:21313440

Aubert, B; Karyotakis, Y; Lees, J P; Poireau, V; Prencipe, E; Prudent, X; Tisserand, V ^[1]; Garra Tico, J; Grauges, E ^[2]; Martinelli, M; Palano, A; Pappagallo, M ^[3]; Eigen, G; Stugu, B; Sun, L ^[4]; Battaglia, M; Brown, D N; Kerth, L T; Kolomensky, Yu G; Lynch, G ^[5]

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1. Laboratoire d'Annecy-le-Vieux de Physique des Particules (LAPP), Universite de Savoie, CNRS/IN2P3, F-74941 Annecy-Le-Vieux (France)
2. Universitat de Barcelona, Facultat de Fisica, Departament ECM, E-08028 Barcelona (Spain)
3. INFN Sezione di Bari, I-70126 Bari (Italy)
4. University of Bergen, Institute of Physics, N-5007 Bergen (Norway)
5. Lawrence Berkeley National Laboratory and University of California, Berkeley, California 94720 (United States)

We present updated measurements of the branching fractions for B{sup 0} meson decays to {eta}K{sup 0}, {eta}{eta}, {eta}{phi}, {eta}{omega}, {eta}{sup '}K{sup 0}, {eta}{sup '}{eta}{sup '}, {eta}{sup '}{phi}, and {eta}{sup '}{omega}, and branching fractions and CP-violating charge asymmetries for B{sup +} decays to {eta}{pi}{sup +}, {eta}K{sup +}, {eta}{sup '}{pi}{sup +}, and {eta}{sup '}K{sup +}. The data represent the full data set of 467x10{sup 6} BB pairs collected with the BABAR detector at the PEP-II asymmetric-energy e{sup +}e{sup -} collider at the SLAC National Accelerator Laboratory. Besides large signals for the four charged B decay modes and for B{sup 0}{yields}{eta}{sup '}K{sup 0}, we find evidence for three B{sup 0} decay modes at greater than 3.0{sigma} significance. We find B(B{sup 0}{yields}{eta}K{sup 0})=(1.15{sub -0.38}{sup +0.43}{+-}0.09)x10{sup -6}, B(B{sup 0}{yields}{eta}{omega})=(0.94{sub -0.30}{sup +0.35}{+-}0.09)x10{sup -6}, and B(B{sup 0}{yields}{eta}{sup '}{omega})=(1.01{sub -0.38}{sup +0.46}{+-}0.09)x10{sup -6}, where the first (second) uncertainty is statistical (systematic). For the B{sup +}{yields}{eta}K{sup +} decay mode, we measure the charge asymmetry A{sub ch}(B{sup +}{yields}{eta}K{sup +})=-0.36{+-}0.11{+-}0.03.

• OSTI ID: 21313440
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 11 Vol. 80; 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
ETA MESONS
FERMILAB ACCELERATOR
OMEGA PARTICLES
PARTICLE DECAY
PHI MESONS
STANFORD LINEAR ACCELERATOR CENTER