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AbstractAbstract
[en] If quarks are composite particles then excited states are expected in p bar p collisions. Using the CDF detector we have searched for excited quarks (q*) which decay to common quarks by emitting a W boson (q* → qW) or a photon (q* → q-γ). In the W + jet and photon + jet mass spectra we see no compelling evidence for a q* mass resonance. We set an upper limit on the q* cross section vs. mass, and using the simplest model of excited quark production, we exclude excited quarks in the mass range 90 < M* < 570 GeV at 95% confidence level. This analysis is preliminary and only statistical uncertainties have been included
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Aug 1993; 12 p; Symposium on lepton and photon interactions; Ithaca, NY (United States); 10-15 Aug 1993; CONF-930823--9; CONTRACT AC02-76CH03000; Available from OSTI as DE93019910; NTIS; INIS; US Govt. Printing Office Dep
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BARYON-BARYON INTERACTIONS, BOSONS, ELEMENTARY PARTICLES, FERMIONS, HADRON-HADRON INTERACTIONS, INTERACTIONS, INTERMEDIATE BOSONS, INTERMEDIATE VECTOR BOSONS, LINEAR MOMENTUM, MASSLESS PARTICLES, MEASURING INSTRUMENTS, NUCLEON-ANTINUCLEON INTERACTIONS, PARTICLE INTERACTIONS, POSTULATED PARTICLES, RADIATION DETECTORS, SPECTRA
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