The flavour changing neutral current decay b → sγ has been detected in hadronic Z decays collected by ALEPH at LEP. The signal is isolated in lifetime-tagged bb̄ events by the presence of a hard photon associated with a system of high momentum and high rapidity hadrons. The background processes are normalised from the data themselves. The inclusive branching ratio is measured to be (3.11±0.80stat±0.72syst)× 10-4, consistent with the Standard Model expectation via penguin processes.

Barate, R., Buskulic, D., Decamp, D., Ghez, P., Goy, C., Lees, J., et al. (1998). A measurement of the inclusive b → sγ branching ratio. PHYSICS LETTERS. SECTION B, 429(1-2), 169-187 [10.1016/S0370-2693(98)00404-3].

A measurement of the inclusive b → sγ branching ratio

CARPINELLI, Massimo;
1998

Abstract

The flavour changing neutral current decay b → sγ has been detected in hadronic Z decays collected by ALEPH at LEP. The signal is isolated in lifetime-tagged bb̄ events by the presence of a hard photon associated with a system of high momentum and high rapidity hadrons. The background processes are normalised from the data themselves. The inclusive branching ratio is measured to be (3.11±0.80stat±0.72syst)× 10-4, consistent with the Standard Model expectation via penguin processes.
Articolo in rivista - Articolo scientifico
Physics
English
1998
429
1-2
169
187
none
Barate, R., Buskulic, D., Decamp, D., Ghez, P., Goy, C., Lees, J., et al. (1998). A measurement of the inclusive b → sγ branching ratio. PHYSICS LETTERS. SECTION B, 429(1-2), 169-187 [10.1016/S0370-2693(98)00404-3].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/390130
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