Search for B+ -> K+ l+ l- and B0 -> K*0 l+ l-

Details Search for B+ -> K+ l+ l- and B0 -> K*0 l+ l- Search for B+ -> K+ l+ l- and B0 -> K*0 l+ l-

2000-10-27

arxiv.org/abs/hep-ex/0010071v1

Int.J.Mod.Phys.A16S1A:458-460,2001

Physics

High Energy Physics

High Energy Physics - Experiment

4 pages, 1 postscript figure, submitted to DPF2000

Scientific paper

10.1142/S0217751X01007200

Using a sample of 3.7 x 10^6$ Upsilon(4S) -> B Bbar events collected with the BaBar detector at the PEP-II storage ring, we search for the electroweak penguin decays B+ -> K+ e+ e-, B+ -> K+ mu+ mu-, B0 -> K*0 e+ e-, and B0 -> K*0 mu+ mu-. We observe no significant signals for these modes and set preliminary 90% C.L. upper limits of Br(B+ -> K+ e+ e-) < 12.5 x 10^(-6), Br(B+ -> K+ mu+ mu-) < 8.3 x 10^(-6), Br(B0 -> K*0 e+ e-) < 24.1 x 10^(-6), and Br(B0 -> K*0 mu+ mu-) < 24.5 x 10^(-6).

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