Search for Second-Generation Leptoquark Pairs in pp Collisions at {radical}(s) =1.8 TeV

Journal Article · Mon Mar 06 04:00:00 EST 2000 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.84.2088· OSTI ID:20215640

Abbott, B ^[1]; Abolins, M ^[2]; Abramov, V ^[3]; Acharya, B S ^[4]; Adams, D L ^[5]; Adams, M ^[6]; Ahn, S ^[7]; Akimov, V ^[8]; Alves, G A ^[9]; Amos, N ^[10]

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1. New York University, New York, New York 10003 (United States)
2. Michigan State University, East Lansing, Michigan 48824 (United States)
3. Institute for High Energy Physics, Protvino, Russia (Russian Federation)
4. Tata Institute of Fundamental Research, Mumbai, (India)
5. University of Texas, Arlington, Texas 76019 (United States)
6. University of Illinois at Chicago, Chicago, Illinois 60607 (United States)
7. Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States)
8. Institute for Theoretical and Experimental Physics, Moscow, Russia (Russian Federation)
9. LAFEX, Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, (Brazil)
10. University of Michigan, Ann Arbor, Michigan 48109 (United States)

We have searched for second-generation leptoquark (LQ) pairs in the {mu}{mu}+jets channel using 94{+-}5 pb{sup -1} of pp collider data collected by the D0 experiment at the Fermilab Tevatron during 1993-1996. No evidence for a signal is observed. These results are combined with those from the {mu}{nu}+jets and {nu}{nu}+jets channels to obtain 95% confidence level (C.L.) upper limits on the LQ pair production cross section as a function of mass and {beta} , the branching fraction of a LQ decay into a charged lepton and a quark. Lower limits of 200(180) GeV/c{sup 2} for {beta}=1((1/2)) are set at the 95% C.L. on the mass of scalar LQ. Mass limits are also set on vector leptoquarks as a function of {beta} . (c) 2000 The American Physical Society.

• OSTI ID: 20215640
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 10 Vol. 84; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BRANCHING RATIO
EXPERIMENTAL DATA
FERMILAB TEVATRON
LEPTONS
MUONS
NEUTRINOS
PROTON-ANTIPROTON INTERACTIONS
QUARKS