Search for 3rd Generation Vector Leptoquarks in the Di-tau Di-jet Channel in Proton Antiproton Collisions at square root s = 1.96 TeV [electronic resource].

Published:: Washington, D.C. : United States. Dept. of Energy, 2006.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:: 222 pages : digital, PDF file
Additional Creators:: Fermi National Accelerator Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information

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Summary:

We search for third generation vector leptoquarks (V LQ3) produced in colliding p{bar p} beams operating at √s = 1.96 TeV at the CDF experiment in Run II of the Fermilab Tevatron. We use 322 pb⁻¹ of data to search for the V LQ3 signal in the di-tau plus di-jet channel. For the first time, the full matrix element is used in the Monte Carlo simulation of this signal. With no events observed in the signal region, we set a 95% C.L. upper limit on the V LQ3 pair production cross section of σ < 344fb, assuming Yang-Mills couplings and Br(V LQ3 → bτ) = 1, and a lower limit on the V LQ3 mass of m{sub V LQ3} > 317 GeV=c². If theoretical uncertainties on the cross section are applied in the least favorable manner the results are σ < 360fb and m{sub V LQ3} > 294 GeV=c². The Minimal coupling V LQ3 result is an upper limit on the cross section of σ < 493fb (σ < 610fb) and the lower limit on the mass is m{sub V LQ3} > 251 GeV=c² (m{sub V LQ3} > 223 GeV=c²) for the nominal (1σ varied) theoretical expectation.

Report Numbers:

E 1.99:fermilab-thesis-2006-28
fermilab-thesis-2006-28

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Note:

Published through SciTech Connect.
12/01/2006.
"fermilab-thesis-2006-28"
Forrester, Stanley Scott.

Funding Information:

AC02-07CH11359

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