407922 SzGeCERN 20161219131716.0 oai:cds.cern.ch:407922 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN CERN-OPEN-99-330 eng Antonelli, M Searches for Scalar Top and Scalar Bottom Quarks at LEP2 1997 Geneva CERN 21 Jul 1997 16 p 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 sqrt{s} = 161, 170, and 172~GeV and 5.7 pb^-1 taken at sqrt{s} = 130 and 136~GeV. No evidence for scalar top quarks or scalar bottom quarks was found in the channels stop --> c chi, stop --> b l snu, and sbottom --> b chi. For the channel stop --> c chi a limit of 67 GeV/c^2 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 stop and the chi of at least 10 GeV/c^2. For the channel stop --> b l snu the mixing-angle independent scalar top limit is 70 GeV/c^2, assuming a mass difference between the stop and the snu of at least 10 GeV/c^2. For the channel sbottom --> b chi, a limit of 73 GeV/c^2 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 sbottom and the chi is at least 10 GeV/c^2. CERN EDS 991119SLAC SzGeCERN Particle Physics - Experiment CERN PREPRINT CERN LEP ALEPH Cerutti, F Pepé-Altarelli, M Orejudos, W Zachariadou, K ALEPH Collaboration EP http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=open-99-330 Access to fulltext document http://cds.cern.ch/record/407922/files/open-99-330.pdf Access to fulltext document http://cds.cern.ch/record/407922/files/open-99-330.ps.gz Access to fulltext document catherine.cart@cern.ch CERN n 199946 11 20100226 2004 CER01 19991115 319858 jerusalem970819 PUBLIC 000334746CER PREPRINT ConferencePaper