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Searches for scalar top and scalar bottom quarks at LEP-2

Barate, R. and Finch, Alexander (1997) Searches for scalar top and scalar bottom quarks at LEP-2. Physics Letters B, 413 (3-4). pp. 431-446. ISSN 0370-2693

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Abstract

Searches for scalar top and bottom quarks have been performed with data collected by the ALEPH detector at LEP. The data sample consists of 21.7 pb−1 taken at , and 5.7 pb−1 taken at . No evidence for scalar top quarks or scalar bottom quarks was found in the channels → cχ, → bℓ, and → bχ. For the channel → cχ a limit of 67 GeV/c2 has been set on the scalar top quark mass, independent of the mixing angle between the supersymmetric partners of the left and right-handed states of the top quark. This limit assumes a mass difference between the and the χ of at least 10 GeV/c2. For the channel → bℓ the mixing-angle independent scalar top limit is 70 GeV/c2, assuming a mass difference between the and the of at least 10 GeV/c2. For the channel → bχ, a limit of 73 GeV/c2 has been set on the mass of the supersymmetric partner of the left-handed state of the bottom quark. This limit is valid if the mass difference between the and the χ is at least 10 GeV/c2.

Item Type: Article
Journal or Publication Title: Physics Letters B
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 64008
Deposited By: ep_importer_pure
Deposited On: 14 May 2013 16:04
Refereed?: Yes
Published?: Published
Last Modified: 21 Sep 2017 05:35
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/64008

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