## Physics - Dissertations

#### Title

Search for electroweak penguin decay bottom quark to s quark lepton+ lepton-

1997

Dissertation

#### Degree Name

Doctor of Philosophy (PhD)

#### Department

Physics

Tomasz Skwarnicki

#### Keywords

flavor changing, bottom quark, strange quark, neutral current

Physics

#### Abstract

Using data taken with the CLEO II detector at the Cornell Electron Storage Ring (CESR), we have searched for the effective Flavor Changing Neutral Current (FCNC) decays $b\to sl\sp+l\sp-$ in an inclusive way. We obtain upper limits on the branching ratio ${\cal B}(b\to se\sp+e\sp-)<5.7\times10\sp{-5},\ {\cal B}(b\to s\mu\sp+\mu\sp-)<5.6\times10\sp{-5}$ and ${\cal B}(b\to se\sp{\pm}\mu\sp{\mp})<2.2\times10\sp{-5}$ at 90% C.L.

#### Access

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