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

D0 Collaboration

doi:10.1103/PhysRevLett.84.2088

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

D0 Collaboration

Research output: Contribution to journal › Article › peer-review

34 Scopus citations

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 language	English
Pages (from-to)	2088-2093
Number of pages	6
Journal	Physical Review Letters
Volume	84
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevLett.84.2088
State	Published - 2000
Externally published	Yes

Funding

We thank the Fermilab and collaborating institution staffs for contributions to this work, and acknowledge support from the Department of Energy and National Science Foundation (USA), Commissariat à L’Energie Atomique (France), Ministry for Science and Technology and Ministry for Atomic Energy (Russia), CAPES and CNPq (Brazil), Departments of Atomic Energy and Science and Education (India), Colciencias (Colombia), CONACyT (Mexico), Ministry of Education and KOSEF (Korea), CONICET and UBACyT (Argentina), and the A. P. Sloan Foundation.

Funders	Funder number
CONICET and UBACyT
Department of Energy and National Science Foundation
Departments of Atomic Energy and Science and Education
Ministry of Education and KOSEF
Alfred P. Sloan Foundation
Fermilab
Departamento Administrativo de Ciencia, Tecnología e Innovación
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Consejo Nacional de Ciencia y Tecnología
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Ministry of Education, Science and Technology
Commissariat à l'Énergie Atomique et aux Énergies Alternatives

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10.1103/PhysRevLett.84.2088

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

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.",

author = "{D0 Collaboration} and B. Abbott and M. Abolins and V. Abramov and Acharya, {B. S.} and Adams, {D. L.} and M. Adams and S. Ahn and V. Akimov and Alves, {G. A.} and N. Amos and Anderson, {E. W.} and Baarmand, {M. M.} and Babintsev, {V. V.} and L. Babukhadia and A. Baden and B. Baldin and S. Banerjee and J. Bantly and E. Barberis and P. Baringer and Bartlett, {J. F.} and U. Bassler and A. Belyaev and Beri, {S. B.} and G. Bernardi and I. Bertram and Bezzubov, {V. A.} and Bhat, {P. C.} and V. Bhatnagar and M. Bhattacharjee and G. Blazey and S. Blessing and A. Boehnlein and Bojko, {N. I.} and F. Borcherding and A. Brandt and R. Breedon and G. Briskin and R. Brock and G. Brooijmans and A. Bross and D. Buchholz and Burtovoi, {V. S.} and Butler, {J. M.} and W. Carvalho and D. Casey and Z. Casilum and H. Castilla-Valdez and D. Chakraborty and M. Demarteau",

year = "2000",

doi = "10.1103/PhysRevLett.84.2088",

language = "English",

volume = "84",

pages = "2088--2093",

journal = "Physical Review Letters",

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publisher = "American Physical Society",

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T1 - Search for second-generation leptoquark pairs in ¯pp collisions at √s=1.8TeV

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.

AU - Babukhadia, L.

AU - Baden, A.

AU - Baldin, B.

AU - Banerjee, S.

AU - Bantly, J.

AU - Barberis, E.

AU - Baringer, P.

AU - Bartlett, J. F.

AU - Bassler, U.

AU - Belyaev, A.

AU - Beri, S. B.

AU - Bernardi, G.

AU - Bertram, I.

AU - Bezzubov, V. A.

AU - Bhat, P. C.

AU - Bhatnagar, V.

AU - Bhattacharjee, M.

AU - Blazey, G.

AU - Blessing, S.

AU - Boehnlein, A.

AU - Bojko, N. I.

AU - Borcherding, F.

AU - Brandt, A.

AU - Breedon, R.

AU - Briskin, G.

AU - Brock, R.

AU - Brooijmans, G.

AU - Bross, A.

AU - Buchholz, D.

AU - Burtovoi, V. S.

AU - Butler, J. M.

AU - Carvalho, W.

AU - Casey, D.

AU - Casilum, Z.

AU - Castilla-Valdez, H.

AU - Chakraborty, D.

AU - Demarteau, M.

PY - 2000

Y1 - 2000

N2 - 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.

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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U2 - 10.1103/PhysRevLett.84.2088

DO - 10.1103/PhysRevLett.84.2088

M3 - Article

AN - SCOPUS:85030591889

SN - 0031-9007

VL - 84

SP - 2088

EP - 2093

JO - Physical Review Letters

JF - Physical Review Letters

IS - 10

ER -

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

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