Search for second-generation leptoquark pairs in ¯pp collisions at √s=1.8TeV

D0 Collaboration

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

We have searched for second-generation leptoquark (LQ) pairs in the μμ+jets channel using 94 ±5pb−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 μν+jets and νν+jets channels to obtain 95% confidence level (C.L.) upper limits on the LQ pair production cross section as a function of mass and β, the branching fraction of a LQ decay into a charged lepton and a quark. Lower limits of 200(180)GeV/c2 for β=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 β.

Original languageEnglish
Pages (from-to)2088-2093
Number of pages6
JournalPhysical Review Letters
Volume84
Issue number10
DOIs
Publication statusPublished - 2000 Jan 1
Externally publishedYes

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collisions
confidence
pair production
leptons
quarks
scalars
cross sections
decay

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Search for second-generation leptoquark pairs in ¯pp collisions at √s=1.8TeV. / D0 Collaboration.

In: Physical Review Letters, Vol. 84, No. 10, 01.01.2000, p. 2088-2093.

Research output: Contribution to journalArticle

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abstract = "We have searched for second-generation leptoquark (LQ) pairs in the μμ+jets channel using 94 ±5pb−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 μν+jets and νν+jets channels to obtain 95{\%} confidence level (C.L.) upper limits on the LQ pair production cross section as a function of mass and β, the branching fraction of a LQ decay into a charged lepton and a quark. Lower limits of 200(180)GeV/c2 for β=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 β.",
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AU - D0 Collaboration

AU - Abbott, B.

AU - Abolins, M.

AU - Abramov, V.

AU - Acharya, B. S.

AU - Adams, D. L.

AU - Adams, M.

AU - Ahn, S.

AU - Akimov, V.

AU - Alves, G. A.

AU - Amos, N.

AU - Anderson, E. W.

AU - Baarmand, M. M.

AU - Babintsev, V. V.

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AU - Baden, A.

AU - Baldin, B.

AU - Banerjee, S.

AU - Bantly, J.

AU - Barberis, E.

AU - Baringer, P.

AU - Bartlett, J. F.

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AU - Bernardi, G.

AU - Bertram, I.

AU - Bezzubov, V. A.

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AU - Bhatnagar, V.

AU - Bhattacharjee, M.

AU - Blazey, G.

AU - Blessing, S.

AU - Boehnlein, A.

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AU - Brandt, A.

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AU - Briskin, G.

AU - Brock, R.

AU - Brooijmans, G.

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AB - We have searched for second-generation leptoquark (LQ) pairs in the μμ+jets channel using 94 ±5pb−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 μν+jets and νν+jets channels to obtain 95% confidence level (C.L.) upper limits on the LQ pair production cross section as a function of mass and β, the branching fraction of a LQ decay into a charged lepton and a quark. Lower limits of 200(180)GeV/c2 for β=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 β.

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