Observation of B{yields}{eta}{sup '}K{sup *} and Evidence for B{sup +}{yields}{eta}{sup '}{rho}{sup +}

Journal Article · Fri Feb 02 04:00:00 EST 2007 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.98.051802· OSTI ID:20955415

Aubert, B; Barate, R; Bona, M; Boutigny, D; Couderc, F; Karyotakis, Y; Lees, J P; Poireau, V; 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]

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1. Laboratoire de Physique des Particules, 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)

We present an observation of B{yields}{eta}{sup '}K{sup *}. The data sample corresponds to 232x10{sup 6} BB pairs collected with the BABAR detector at the PEP-II asymmetric-energy B factory at the Stanford Linear Accelerator Center. We measure the branching fractions (in units of 10{sup -6}) B(B{sup 0}{yields}{eta}{sup '}K{sup *0})=3.8{+-}1.1{+-}0.5 and B(B{sup +}{yields}{eta}{sup '}K{sup *+})=4.9{sub -1.7}{sup +1.9}{+-}0.8, where the first error is statistical and the second systematic. A simultaneous fit results in the observation of B{yields}{eta}{sup '}K{sup *} with B(B{yields}{eta}{sup '}K{sup *})=4.1{sub -0.9}{sup +1.0}{+-}0.5. We also search for B{yields}{eta}{sup '}{rho} and {eta}{sup '}f{sub 0}(980)(f{sub 0}{yields}{pi}{sup +}{pi}{sup -}) with results and 90% confidence level upper limits B(B{sup +}{yields}{eta}{sup '}{rho}{sup +})=8.7{sub -2.8-1.3}{sup +3.1+2.3} (<14), B(B{sup 0}{yields}{eta}{sup '}{rho}{sup 0})<3.7, and B(B{sup 0}{yields}{eta}{sup '}f{sub 0}(980)(f{sub 0}{yields}{pi}{sup +}{pi}{sup -}))<1.5. Charge asymmetries in the channels with significant yields are consistent with zero.

• OSTI ID: 20955415
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 5 Vol. 98; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
B PLUS MESONS
BRANCHING RATIO
ERRORS
ETA MESONS
F0-980 MESONS
KAONS
PAIR PRODUCTION
PARTICLE DECAY
PIONS MINUS
PIONS PLUS
RHO-770 MESONS
STANFORD LINEAR ACCELERATOR CENTER