Search for Pair Production of Scalar Top Quarks Decaying to a {tau} Lepton and a b Quark in pp Collisions at {radical}(s)=1.96 TeV
- Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00014, Helsinki (Finland)
- Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 (United States)
We search for pair production of supersymmetric top quarks (t-tilde{sub 1}), followed by R-parity violating decay t-tilde{sub 1}{yields}{tau}b with a branching ratio {beta}, using 322 pb{sup -1} of pp collisions at {radical}(s)=1.96 TeV collected by the upgraded Collider Detector at Fermilab. Two candidate events pass our final selection criteria, consistent with the standard model expectation. We set upper limits on the cross section {sigma}(t-tilde{sub 1}t-tilde{sub 1})x{beta}{sup 2} as a function of the top-squark mass m(t-tilde{sub 1}). Assuming {beta}=1, we set a 95% confidence level limit m(t-tilde{sub 1})>153 GeV/c{sup 2}. The limits are also applicable to the case of a third-generation scalar leptoquark (LQ{sub 3}) decaying LQ{sub 3}{yields}{tau}b.
- OSTI ID:
- 21134126
- Journal Information:
- Physical Review Letters, Vol. 101, Issue 7; Other Information: DOI: 10.1103/PhysRevLett.101.071802; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA). CDF Collaboration; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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