Search For 3rd Generation Vector Leptoquarks In The Di Tau Di Jet Channel In Proton Antiproton Collisions At Square Root S
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Search for 3rd Generation Vector Leptoquarks in the Di-tau Di-jet Channel in Proton Antiproton Collisions at Square Root S
We search for third generation vector leptoquarks (V LQ3) produced in colliding p{bar p} beams operating at {radical}s = 1.96 TeV at the CDF experiment in Run II of the Fermilab Tevatron. We use 322 pb{sup -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 {sigma} 344fb, assuming Yang-Mills couplings and Br(V LQ3 {yields} b{tau}) = 1, and a lower limit on the V LQ3 mass of m{sub V LQ3} 317 GeV=c{sup 2}. If theoretical uncertainties on the cross section are applied in the least favorable manner the results are {sigma} 360fb and m{sub V LQ3} 294 GeV=c{sup 2}. The Minimal coupling V LQ3 result is an upper limit on the cross section of {sigma} 493fb ({sigma} 610fb) and the lower limit on the mass is m{sub V LQ3} 251 GeV=c{sup 2} (m{sub V LQ3} 223 GeV=c{sup 2}) for the nominal (1{sigma} varied) theoretical expectation.
Search for 3rd Generation Vector Leptoquarks in the Di-tau Di-jet Channel in Proton Antiproton Collisions at Square {u221A}s
We search for third generation vector leptoquarks (V LQ3) produced in colliding p$ar{p}$ 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 ? 344fb, assuming Yang-Mills couplings and Br(V LQ3 → b?) = 1, and a lower limit on the V LQ3 mass of msubV LQ3/sub 317 GeV=c2. If theoretical uncertainties on the cross section are applied in the least favorable manner the results are ? 360fb and msubV LQ3/sub 294 GeV=c2. The Minimal coupling V LQ3 result is an upper limit on the cross section of ? 493fb (? 610fb) and the lower limit on the mass is msubV LQ3/sub 251 GeV=csup2/sup (msubV LQ3/sub 223 GeV=c2) for the nominal (1? varied) theoretical expectation.