Search forB0→K*+K*−

B. Aubert, M. Bona, Y. Karyotakis, J. P. Lees, V. Poireau, E. Prencipe, X. Prudent, V. Tisserand, J. Garra Tico, E. Grauges, L. Lopez, A. Palano (+519 others)
2008 Physical Review D  
We report the results of a search for the decay B0 -> K*+ K*- with a sample of 454 +/- 5 million BBbar pairs collected with the BaBar detector at the PEP-II asymmetric-energy e+e- collider at the Stanford Linear Accelerator Center. We obtain an upper limit at the 90 fraction for Br(B0 -> K*+ K*-) < 2.0 x 10^-6, assuming the decay is fully longitudinally polarized.
doi:10.1103/physrevd.78.051103 fatcat:7q23ht5offd6rk7lxi44mmen6i