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ISSN - 00319007, EISSN - 10797114, Physical Review Letters, 2006, vol. 97, p. -

Measurements of branching fraction, polarization, and charge asymmetry of B±→ρ±ρ0 and a search for B±→ρ± f0(980)

Aubert B., Bona M., Boutigny D., Couderc F., Karyotakis Y., Lees J. P., Poireau V., Tisserand V., Zghiche A., Grauges E., Palano A., Chen J. C., Qi N. D., Rong G., Wang P., Zhu Y. S., Eigen G., Ofte I., Stugu B., Abrams G. S., Battaglia M., Brown D. N., Button-Shafer J., Cahn R. N., Charles E., Gill M. S., Groysman Y., Jacobsen R. G., Kadyk J. A., Kerth L. T., Kolomensky Yu G., Kukartsev G., Lynch G., Mir L. M., Orimoto T. J., Pripstein M., Roe N. A., Ronan M. T., Wenzel W. A., Del Amo Sanchez P., Barrett M., Ford K. E., Harrison T. J., Hart A. J., Hawkes C. M., Watson A. T., Held T., Koch H., Lewandowski B., Pelizaeus M., Peters K., Schroeder T., Steinke M., Boyd J. T., Burke J. P., Cottingham W. N., Walker D., Asgeirsson D. J., Cuhadar-Donszelmann T., Fulsom B. G., Hearty C., Knecht N. S., Mattison T. S., McKenna J. A., Khan A., Kyberd P., Saleem M., Sherwood D. J., Teodorescu L., Blinov V. E., Bukin A. D., Druzhinin V. P., Golubev V. B., Onuchin A. P., Serednyakov S. I., Skovpen Yu I., Solodov E. P., Todyshev K. Yu, Bondioli M., Bruinsma M., Chao M., Curry S., Eschrich I., Kirkby D., Lankford A. J., Lund P., Mandelkern M., Mommsen R. K., Roethel W., Stoker D. P., Abachi S., Buchanan C., Foulkes S. D., Gary J. W., Long O., Shen B. C., Wang K., Zhang L., Hadavand H. K., Hill E. J.

We measure the branching fraction (B), polarization (fL), and CP asymmetry (ACP) of B±→ρ±ρ0 decays and search for the decay B±→ρ±f0(980) based on a data sample of 231.8×106 Υ(4S)→BB̄ decays collected with the BABAR detector at the SLAC PEP-II asymmetric-energy B factory. In B±→ρ±ρ0 decays we measure B=(16.8±2.2±2.3)×10-6, fL=0.905±0.042-0. 027+0.023, and ACP=-0.12±0.13±0.10, and find an upper limit on the branching fraction of B±→ρ±f0(980)(→π+π-) decays of 1.9×10-6 at 90% confidence level. © 2006 The American Physical Society.