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Search for pair production of first-generation leptoquarks in p pbar collisions at sqrt(s)=1.96 TeV

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Search for pair production of first-generation leptoquarks in p pbar collisions at sqrt(s)=1.96 TeV. / D0 Collaboration, The; Bertram, Iain; Borissov, Guennadi et al.
In: Physics Letters B, Vol. 681, No. 3, 02.11.2009, p. 224-232.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

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D0 Collaboration T, Bertram I, Borissov G, Fox H, Williams M, Ratoff P et al. Search for pair production of first-generation leptoquarks in p pbar collisions at sqrt(s)=1.96 TeV. Physics Letters B. 2009 Nov 2;681(3):224-232. doi: 10.1016/j.physletb.2009.10.016

Author

D0 Collaboration, The ; Bertram, Iain ; Borissov, Guennadi et al. / Search for pair production of first-generation leptoquarks in p pbar collisions at sqrt(s)=1.96 TeV. In: Physics Letters B. 2009 ; Vol. 681, No. 3. pp. 224-232.

Bibtex

@article{38479c83df284657a89c5dfc3aa91b3e,
title = "Search for pair production of first-generation leptoquarks in p pbar collisions at sqrt(s)=1.96 TeV",
abstract = "A search for pair production of first-generation leptoquarks LQ is performed with data collected by the D0 experiment in p pbar collisions at sqrt(s)=1.96 TeV at the Fermilab Tevatron Collider. In a sample of data corresponding to ~1 fb-1, the search has been performed on the final states with two electrons and two jets or one electron, two jets and missing transverse energy. We find our data consistent with standard model expectations. The results are combined with those found in a previous analysis of events with two jets and missing transverse energy to obtain scalar LQ mass limits. We set 95% C.L. lower limits on a scalar LQ mass of 299 GeV, 284 GeV and 216 GeV for beta=1, beta=0.5 and beta=0.02 respectively, where beta is the LQ branching ratio in the eq channel. This improves the results obtained with a lower luminosity sample from Run II of the Tevatron. Lower limits on vector LQ masses with different couplings from 357 GeV to 464 GeV for beta=0.5 are also set using this analysis.",
author = "{D0 Collaboration}, The and Iain Bertram and Guennadi Borissov and Harald Fox and Mark Williams and Peter Ratoff and Peter Love and Alexander Rakitin and Andre Sopczak",
note = "10 pages 10 figures Submitted to Physics Letters B",
year = "2009",
month = nov,
day = "2",
doi = "10.1016/j.physletb.2009.10.016",
language = "English",
volume = "681",
pages = "224--232",
journal = "Physics Letters B",
issn = "0370-2693",
publisher = "ELSEVIER SCIENCE BV",
number = "3",

}

RIS

TY - JOUR

T1 - Search for pair production of first-generation leptoquarks in p pbar collisions at sqrt(s)=1.96 TeV

AU - D0 Collaboration, The

AU - Bertram, Iain

AU - Borissov, Guennadi

AU - Fox, Harald

AU - Williams, Mark

AU - Ratoff, Peter

AU - Love, Peter

AU - Rakitin, Alexander

AU - Sopczak, Andre

N1 - 10 pages 10 figures Submitted to Physics Letters B

PY - 2009/11/2

Y1 - 2009/11/2

N2 - A search for pair production of first-generation leptoquarks LQ is performed with data collected by the D0 experiment in p pbar collisions at sqrt(s)=1.96 TeV at the Fermilab Tevatron Collider. In a sample of data corresponding to ~1 fb-1, the search has been performed on the final states with two electrons and two jets or one electron, two jets and missing transverse energy. We find our data consistent with standard model expectations. The results are combined with those found in a previous analysis of events with two jets and missing transverse energy to obtain scalar LQ mass limits. We set 95% C.L. lower limits on a scalar LQ mass of 299 GeV, 284 GeV and 216 GeV for beta=1, beta=0.5 and beta=0.02 respectively, where beta is the LQ branching ratio in the eq channel. This improves the results obtained with a lower luminosity sample from Run II of the Tevatron. Lower limits on vector LQ masses with different couplings from 357 GeV to 464 GeV for beta=0.5 are also set using this analysis.

AB - A search for pair production of first-generation leptoquarks LQ is performed with data collected by the D0 experiment in p pbar collisions at sqrt(s)=1.96 TeV at the Fermilab Tevatron Collider. In a sample of data corresponding to ~1 fb-1, the search has been performed on the final states with two electrons and two jets or one electron, two jets and missing transverse energy. We find our data consistent with standard model expectations. The results are combined with those found in a previous analysis of events with two jets and missing transverse energy to obtain scalar LQ mass limits. We set 95% C.L. lower limits on a scalar LQ mass of 299 GeV, 284 GeV and 216 GeV for beta=1, beta=0.5 and beta=0.02 respectively, where beta is the LQ branching ratio in the eq channel. This improves the results obtained with a lower luminosity sample from Run II of the Tevatron. Lower limits on vector LQ masses with different couplings from 357 GeV to 464 GeV for beta=0.5 are also set using this analysis.

U2 - 10.1016/j.physletb.2009.10.016

DO - 10.1016/j.physletb.2009.10.016

M3 - Journal article

VL - 681

SP - 224

EP - 232

JO - Physics Letters B

JF - Physics Letters B

SN - 0370-2693

IS - 3

ER -