A search for third generation scalar leptoquarks

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Leptoquarks (LQ) are particles with both color and lepton number predicted in some gauge theories and composite models. Current theory suggests that leptoquarks would come in three different generations. We report on a search for charge 1/3 third generation leptoquarks produced in p{bar p} collisions at {radical}s = 1.96 TeV using data collected by the D0 detector at Fermilab. Such leptoquarks would decay into a tau-neutrino plus a b-quark with branching fraction B. We present preliminary results on an analysis where both leptoquarks decay into neutrinos giving a final state with missing energy and two b-jets. Using 425(recorded) pb{sup -1} ... continued below

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118 pages

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Zatserklyaniy, Andriy & U., /Northern Illinois August 1, 2006.

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Leptoquarks (LQ) are particles with both color and lepton number predicted in some gauge theories and composite models. Current theory suggests that leptoquarks would come in three different generations. We report on a search for charge 1/3 third generation leptoquarks produced in p{bar p} collisions at {radical}s = 1.96 TeV using data collected by the D0 detector at Fermilab. Such leptoquarks would decay into a tau-neutrino plus a b-quark with branching fraction B. We present preliminary results on an analysis where both leptoquarks decay into neutrinos giving a final state with missing energy and two b-jets. Using 425(recorded) pb{sup -1} of data, we place limits on {sigma}(p{bar p} {yields} LQ{ovr LQ})B{sup 2} as a function of the leptoquark mass. Assuming B = 1, we excluded at the 95% confidence level scalar third generation leptoquarks with M{sub LQ} < 219 GeV.

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118 pages

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  • Report No.: FERMILAB-THESIS-2006-38
  • Grant Number: AC02-07CH11359
  • DOI: 10.2172/900000 | External Link
  • Office of Scientific & Technical Information Report Number: 900000
  • Archival Resource Key: ark:/67531/metadc889038

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • August 1, 2006

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  • Sept. 22, 2016, 2:13 a.m.

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  • Dec. 1, 2016, 7:13 p.m.

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Zatserklyaniy, Andriy & U., /Northern Illinois. A search for third generation scalar leptoquarks, thesis or dissertation, August 1, 2006; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc889038/: accessed December 12, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.