Search for scalar quarks in e+ e- collisions at s**(1/2) up to 209-GeV
(2002) Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics — Vol. B537, p. 5-20 (2002)
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- Abstract
- (en) Search for Scalar Quarks in e+e- Collisions at sqrt(s) up to 209 GeV Searches for scalar top, scalar bottom and mass-degenerate scalar quarks are performed in the data collected by the ALEPH detector at LEP, at centre-of-mass energies up to 209 GeV, corresponding to an integrated luminosity of 675 pb-1. No evidence for the production of such particles is found in the decay channels stop->c/u chi, stop->b l snu, sbottom-> b chi, squark-> q chi or in the stop four-body decay channel stop-> b chi f f' studied for the first time at LEP. The results of these searches yield improved mass lower limits. In particular, an absolute lower limit of 63GeV/c2 is obtained for the stop mass, at 95% confidence level, irrespective of stop lifetime and decay branching ratios. Comment: 17 pages, 6 figures
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Heister, A., Delaere, C., & et al. (2002). Search for scalar quarks in e+ e- collisions at s**(1/2) up to 209-GeV. Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics, B537, 5-20. https://hdl.handle.net/2078.5/257530 (Original work published 2002)