A search for the Bc meson decaying into the channels and (ℓ = e or μ) is performed in a sample of 3.9 million hadronic Z decays collected by the ALEPH detector. This search results in the observation of 0 and 2 candidates in each of these channels, respectively, while 0.44 and 0.81 background events are expected. The following 90% confidence level upper limits are derived: Another candidate with very low background probability, found in an independent analysis, is also described in detail.

Search for the Bc meson in hadronic Z decays / R. Barate, D. Buskulic, D. Decamp, P. Ghez, C. Goy, J.-P. Lees, A. Lucotte, M.-N. Minard, J.-Y. Nief, B. Pietrzyk, M.P. Casado, M. Chmeissani, P. Comas, J.M. Crespo, M. Delfino, E. Fernandez, M. Fernandez-Bosman, Ll. Garrido, A. Juste, M. Martinez, et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - ELETTRONICO. - 402:(1997), pp. 213-226. [10.1016/S0370-2693(97)00461-9]

Search for the Bc meson in hadronic Z decays

FOCARDI, ETTORE;CIULLI, VITALIANO;
1997

Abstract

A search for the Bc meson decaying into the channels and (ℓ = e or μ) is performed in a sample of 3.9 million hadronic Z decays collected by the ALEPH detector. This search results in the observation of 0 and 2 candidates in each of these channels, respectively, while 0.44 and 0.81 background events are expected. The following 90% confidence level upper limits are derived: Another candidate with very low background probability, found in an independent analysis, is also described in detail.
1997
402
213
226
R. Barate;D. Buskulic;D. Decamp;P. Ghez;C. Goy;J.-P. Lees;A. Lucotte;M.-N. Minard;J.-Y. Nief;B. Pietrzyk;M.P. Casado;M. Chmeissani;P. Com...espandi
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/638706
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