Search for the Rare Decays B --> Kl^+l^- and B --> K^*l^+l^-
| dc.creator | al, B. Aubert et | |
| dc.date | 2002-01-04 | |
| dc.date.accessioned | 2026-07-07T12:01:43Z | |
| dc.date.available | 2026-07-07T12:01:43Z | |
| dc.description | We present results from a search for the flavor-changing neutral current decays $B\to K\ell^+\ell^-$ and $B\to K^*\ell^+\ell^-$, where $\ell^+\ell^-$ is either an $e^+e^-$ or $μ^+μ^-$ pair. The data sample comprises $22.7\times 10^6$ $Υ(4S)\to B\bar B$ decays collected with the BABAR detector at the PEP-II $B$ Factory. We obtain the 90% C.L. upper limits ${\mathcal B}(B\to K\ell^+\ell^-)< 0.50\times 10^{-6}$ and ${\mathcal B}(B\to K^*\ell^+\ell^-)<2.9\times 10^{-6}$, close to Standard Model predictions for these branching fractions. We have also obtained limits on the lepton-family-violating decays $B\to Ke^{\pm}μ^{\mp}$ and $B\to K^{*}e^{\pm}μ^{\mp}$. | |
| dc.description | 7 pages, 3 figures, submitted to Physical Review Letters | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0201008 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0201008 | |
| dc.identifier | Phys.Rev.Lett.88:241801,2002 | |
| dc.identifier | doi:10.1103/PhysRevLett.88.241801 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/207189 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Search for the Rare Decays B --> Kl^+l^- and B --> K^*l^+l^- | |
| dc.type | text |