2006•Archivio istituzionale della ricerca (Alma Mater Studiorum Università di Bologna)Requires access
Search for the decay B0→a±1ρ∓
B. Aubert, R. Borate, M. Bóna, D. Boutigny, F. Couderc, Y. Karyotakis, J. P. Lees, V. Poireau, V. Tisserand, A. Zghiche, E. Granges, A. Palano, M. Pappagallo, J. C. Chen, N. D. Qi, G. Rang, P. Wang, Y. Zhu, G. Eigen, I. Ofte, B. Stugu, G. S. Abrams, M. Battaglia, D. N. Brown, J. Button‐Shafer, R. N. Cahn, E. Charles, C. T. Day, M. S. Gill, Y. Groysman, R. G. Jacobsen, J. A. Kadyk, L. T. Kerth, Yu. G. Kolomensky, G. Kukartsev, G. Lynch, L. M. Mir, P.J. Oddone, T. Orimoto, M. Pripstein, N. A. Roe, M. T. Ronan, W.A. Wenzel, M. Barrett, K. E. Ford, T. J. Harrison, A. John Hart, C. M. Hawkes, S. E. Morgan, A. T. Watson, K. Goetzen, T. Held, H. Koch
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Abstract
We present a search for the rare B-meson decay B0→a±1ρ∓ with a±1→π+π−π±. We use (110±1.2)×106 Υ(4S)→B¯¯¯B decays collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. We obtain an upper limit of 30×10−6 (90%C.L.) for the branching fraction product B(B0→a±1ρ∓)B(a±1→π+π−π±), where we assume that the a±1 decays exclusively to ρ0π±.