Search for first generation scalar leptoquark pairs in pp collisions at √ s = 1.8 TeV

D0 Collaboration

doi:10.1103/PhysRevLett.80.2051

Search for first generation scalar leptoquark pairs in pp collisions at √ s = 1.8 TeV

D0 Collaboration

Physics and Astronomy

New York University
Michigan State University
Tata Institute of Fundamental Research
Columbia University
Rice University
University of Illinois at Chicago
Fermi National Accelerator Laboratory
Lawrence Berkeley National Laboratory
Centro Brasileiro de Pesquisas Físicas
University of Michigan, Ann Arbor
Iowa State University
Stony Brook University
University of Maryland, College Park
University of Notre Dame
University of Hawai'i at Mānoa
Brown University
University of Rochester
Lomonosov Moscow State University
Panjab University
Northwestern University
Institute for High Energy Physics
Northern Illinois University
Florida State University
University of California at Davis
University of California at Riverside
Boston University
Centro de Investigacion y de Estudios Avanzados del Instituto Politécnico Nacional

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

61 Scopus citations

Abstract

We have searched for first generation scalar leptoquark (LQ) pairs in the ev + jets channel using pp collider data (∫L dt ≈ 115pb^-1) collected by the D0 experiment at the Fermilab Tevatron during 1992-1996. The analysis yields no candidate events. We combine the results with those from the ee + jets vv + jets channels to obtain 95% confidence level (C.L.) upper limits on the LQ pair production cross section as a function of mass and of β, the branching fraction to a charged lepton. Comparing with the next-to-leading order theory, we set 95% C.L. lower limits on the LQ mass of 225, 204, and 79 GeV/c² for β = 1, 1/2, and 0, respectively.

Original language	English
Pages (from-to)	2051-2056
Number of pages	6
Journal	Physical Review Letters
Volume	80
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevLett.80.2051
State	Published - 1998

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10.1103/PhysRevLett.80.2051

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@article{a183116c3d1740139b7923c3744e5bb8,

title = "Search for first generation scalar leptoquark pairs in pp collisions at √ s = 1.8 TeV",

abstract = "We have searched for first generation scalar leptoquark (LQ) pairs in the ev + jets channel using pp collider data (∫L dt ≈ 115pb-1) collected by the D0 experiment at the Fermilab Tevatron during 1992-1996. The analysis yields no candidate events. We combine the results with those from the ee + jets vv + jets channels to obtain 95\% confidence level (C.L.) upper limits on the LQ pair production cross section as a function of mass and of β, the branching fraction to a charged lepton. Comparing with the next-to-leading order theory, we set 95\% C.L. lower limits on the LQ mass of 225, 204, and 79 GeV/c2 for β = 1, 1/2, and 0, respectively.",

author = "\{D0 Collaboration\} and B. Abbott and M. Abolins and Acharya, \{B. S.\} and I. Adam and Adams, \{D. L.\} and M. Adams and S. Ahn and H. Aihara and Alves, \{G. A.\} and N. Amos and Anderson, \{E. W.\} and R. Astur and Baarmand, \{M. M.\} and A. Baden and V. Balamurali and J. Balderston and B. Baldin and S. Banerjee and J. Bantly and E. Barberis and Bartlett, \{J. F.\} and K. Bazizi and A. Belyaev and Beri, \{S. B.\} and I. Bertram and Bezzubov, \{V. A.\} and Bhat, \{P. C.\} and V. Bhatnagar and M. Bhattacharjee and N. Biswas and G. Blazey and S. Blessing and P. Bloom and A. Boehnlein and Bojko, \{N. I.\} and F. Borcherding and C. Boswell and A. Brandt and R. Brock 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 Hobbs, \{J. D.\} and Jung, \{C. K.\}",

year = "1998",

doi = "10.1103/PhysRevLett.80.2051",

language = "English",

volume = "80",

pages = "2051--2056",

journal = "Physical Review Letters",

issn = "0031-9007",

number = "10",

}

TY - JOUR

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

AU - D0 Collaboration

AU - Abbott, B.

AU - Abolins, M.

AU - Acharya, B. S.

AU - Adam, I.

AU - Adams, D. L.

AU - Adams, M.

AU - Ahn, S.

AU - Aihara, H.

AU - Alves, G. A.

AU - Amos, N.

AU - Anderson, E. W.

AU - Astur, R.

AU - Baarmand, M. M.

AU - Baden, A.

AU - Balamurali, V.

AU - Balderston, J.

AU - Baldin, B.

AU - Banerjee, S.

AU - Bantly, J.

AU - Barberis, E.

AU - Bartlett, J. F.

AU - Bazizi, K.

AU - Belyaev, A.

AU - Beri, S. B.

AU - Bertram, I.

AU - Bezzubov, V. A.

AU - Bhat, P. C.

AU - Bhatnagar, V.

AU - Bhattacharjee, M.

AU - Biswas, N.

AU - Blazey, G.

AU - Blessing, S.

AU - Bloom, P.

AU - Boehnlein, A.

AU - Bojko, N. I.

AU - Borcherding, F.

AU - Boswell, C.

AU - Brandt, A.

AU - Brock, R.

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 - Hobbs, J. D.

AU - Jung, C. K.

PY - 1998

Y1 - 1998

N2 - We have searched for first generation scalar leptoquark (LQ) pairs in the ev + jets channel using pp collider data (∫L dt ≈ 115pb-1) collected by the D0 experiment at the Fermilab Tevatron during 1992-1996. The analysis yields no candidate events. We combine the results with those from the ee + jets vv + jets channels to obtain 95% confidence level (C.L.) upper limits on the LQ pair production cross section as a function of mass and of β, the branching fraction to a charged lepton. Comparing with the next-to-leading order theory, we set 95% C.L. lower limits on the LQ mass of 225, 204, and 79 GeV/c2 for β = 1, 1/2, and 0, respectively.

AB - We have searched for first generation scalar leptoquark (LQ) pairs in the ev + jets channel using pp collider data (∫L dt ≈ 115pb-1) collected by the D0 experiment at the Fermilab Tevatron during 1992-1996. The analysis yields no candidate events. We combine the results with those from the ee + jets vv + jets channels to obtain 95% confidence level (C.L.) upper limits on the LQ pair production cross section as a function of mass and of β, the branching fraction to a charged lepton. Comparing with the next-to-leading order theory, we set 95% C.L. lower limits on the LQ mass of 225, 204, and 79 GeV/c2 for β = 1, 1/2, and 0, respectively.

UR - https://www.scopus.com/pages/publications/4243530921

U2 - 10.1103/PhysRevLett.80.2051

DO - 10.1103/PhysRevLett.80.2051

M3 - Article

AN - SCOPUS:4243530921

SN - 0031-9007

VL - 80

SP - 2051

EP - 2056

JO - Physical Review Letters

JF - Physical Review Letters

IS - 10

ER -

Search for first generation scalar leptoquark pairs in pp collisions at √ s = 1.8 TeV

Abstract

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