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Search for B0(s) oscillations using inclusive lepton events

ALEPH Collaboration, The and Barate, R. and Betteridge, Andrew and Bowdery, Christopher and Colrain, Paul and Finch, Alexander and Foster, Frank and Hughes, Gareth and Jones, Roger and Williams, Mark (1999) Search for B0(s) oscillations using inclusive lepton events. The European Physical Journal C (EPJ C) - Particles and Fields, 7 (4). pp. 553-569. ISSN 1434-6052

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Abstract

A search for B0s oscillations is performed using a sample of semileptonic b-hadron decays collected by the ALEPH experiment during 1991–95. Compared to previous inclusive lepton analyses, the proper time resolution and b-flavour mistag rate are significantly improved. Additional sensitivity to B0s mixing is obtained by identifying subsamples of events having a B0s purity which is higher than the average for the whole data sample. Unbinned maximum likelihood amplitude fits are performed to derive a lower limit of Δms>9.5ps−1 at the 95% confidence limit (95% CL). Combining with the ALEPH D−s -based analyses yields Δms>9.6ps−1 at 95% CL.

Item Type: Article
Journal or Publication Title: The European Physical Journal C (EPJ C) - Particles and Fields
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 63977
Deposited By: ep_importer_pure
Deposited On: 15 May 2013 09:30
Refereed?: Yes
Published?: Published
Last Modified: 08 Sep 2017 00:28
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/63977

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