Search for scalar leptoquark pairs decaying to electrons and jets in p®p collisions

D0 Collaboration

doi:10.1103/PhysRevLett.79.4321

Search for scalar leptoquark pairs decaying to electrons and jets in p®p collisions

D0 Collaboration

New York University
Michigan State University
Tata Institute of Fundamental Research, Mumbai
Columbia University
Rice University
University of Illinois at Chicago
Fermi National Accelerator Laboratory
Lawrence Berkeley National Laboratory
Centro Brasileiro de Pesquisas Fisicas
Northeastern University
University of Michigan, Ann Arbor
Iowa State University
Stony Brook University
University of Maryland, College Park
University of Notre Dame
University of Hawaiʻi at Mānoa
Brown University
University of Rochester
Lomonosov Moscow State University
Panjab University
Northwestern University
Institute for High Energy Physics
University of Delhi
Northern Illinois University
Florida State University
University of California, Davis
University of California at Riverside
Boston University
Centro de Investigacion y de Estudios Avanzados del Instituto Politécnico Nacional
Universidad de los Andes Colombia
Seoul National University
University of Nebraska-Lincoln
University of Arizona
University of Texas at Arlington
CEA Saclay
University of California at Irvine
Brookhaven National Laboratory
Texas AandM University
Universidad de Buenos Aires
University of Oklahoma Bioengineering Center
Indiana University Bloomington
Korea University
Purdue University
Universidade do Estado do Rio de Janeiro
Kyungsung University

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

58 Scopus citations

Abstract

We have searched for the pair production of first generation scalar leptoquarks in the eejj channel using the full data set (123pb⁻¹) collected with the D0 detector at the Fermilab Tevatron during 1992-1996. We observe no candidates with an expected background of approximately 0.4 events. Comparing the experimental 95% confidence level upper limit to theoretical calculations of the cross section with the assumption of a 100% branching fraction of eq, we set a lower limit on the mass of a first generation scalar leptoquark of 225 GeV/c². The results of this analysis rule out the interpretation of the excess of high Q² events at DESY HERA as leptoquarks which decay exclusively to eq.

Original language	English
Pages (from-to)	4321-4326
Number of pages	6
Journal	Physical Review Letters
Volume	79
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevLett.79.4321
State	Published - 1997
Externally published	Yes

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10.1103/PhysRevLett.79.4321

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@article{2e45bae84e714580be79b3763884f479,

title = "Search for scalar leptoquark pairs decaying to electrons and jets in p{\textregistered}p collisions",

abstract = "We have searched for the pair production of first generation scalar leptoquarks in the eejj channel using the full data set (123pb−1) collected with the D0 detector at the Fermilab Tevatron during 1992-1996. We observe no candidates with an expected background of approximately 0.4 events. Comparing the experimental 95\% confidence level upper limit to theoretical calculations of the cross section with the assumption of a 100\% branching fraction of eq, we set a lower limit on the mass of a first generation scalar leptoquark of 225 GeV/c2. The results of this analysis rule out the interpretation of the excess of high Q2 events at DESY HERA as leptoquarks which decay exclusively to eq.",

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 E. Amidi 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 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 Chang, \{S. M.\} and B. Hoeneisen",

year = "1997",

doi = "10.1103/PhysRevLett.79.4321",

language = "Ingl{\'e}s",

volume = "79",

pages = "4321--4326",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "22",

}

TY - JOUR

T1 - Search for scalar leptoquark pairs decaying to electrons and jets in p®p collisions

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 - Amidi, E.

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 - 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 - Chang, S. M.

AU - Hoeneisen, B.

PY - 1997

Y1 - 1997

N2 - We have searched for the pair production of first generation scalar leptoquarks in the eejj channel using the full data set (123pb−1) collected with the D0 detector at the Fermilab Tevatron during 1992-1996. We observe no candidates with an expected background of approximately 0.4 events. Comparing the experimental 95% confidence level upper limit to theoretical calculations of the cross section with the assumption of a 100% branching fraction of eq, we set a lower limit on the mass of a first generation scalar leptoquark of 225 GeV/c2. The results of this analysis rule out the interpretation of the excess of high Q2 events at DESY HERA as leptoquarks which decay exclusively to eq.

AB - We have searched for the pair production of first generation scalar leptoquarks in the eejj channel using the full data set (123pb−1) collected with the D0 detector at the Fermilab Tevatron during 1992-1996. We observe no candidates with an expected background of approximately 0.4 events. Comparing the experimental 95% confidence level upper limit to theoretical calculations of the cross section with the assumption of a 100% branching fraction of eq, we set a lower limit on the mass of a first generation scalar leptoquark of 225 GeV/c2. The results of this analysis rule out the interpretation of the excess of high Q2 events at DESY HERA as leptoquarks which decay exclusively to eq.

UR - https://www.scopus.com/pages/publications/4243435782

U2 - 10.1103/PhysRevLett.79.4321

DO - 10.1103/PhysRevLett.79.4321

M3 - Artículo

AN - SCOPUS:4243435782

SN - 0031-9007

VL - 79

SP - 4321

EP - 4326

JO - Physical Review Letters

JF - Physical Review Letters

IS - 22

ER -

Search for scalar leptoquark pairs decaying to electrons and jets in p®p collisions

Abstract

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