Search for first generation scalar leptoquarks in pp collisions at root s=7 TeV with the ATLAS detector

Barton, Adam and Borissov, Guennadi and Bouhova-Thacker, Eva and Brodbeck, Timothy and Catmore, James and Chilingarov, Alexandre and Davidson, Ruth and de Mora, Lee and Dearnaley, William and Fox, Harald and Henderson, Robert and Hughes, Gareth and Jones, Roger William Lewis and Kartvelishvili, Vakhtang and Long, Robin and Love, Peter and Ratoff, Peter and Smizanska, Maria and Walder, James (2012) Search for first generation scalar leptoquarks in pp collisions at root s=7 TeV with the ATLAS detector. Physics Letters B, 709 (3). pp. 158-176. ISSN 0370-2693

[img]
Preview
PDF (1-s2.0-S0370269312001232-main)
1_s2.0_S0370269312001232_main.pdf - Published Version
Available under License Creative Commons Attribution.

Download (1MB)

Abstract

We report a search for first generation scalar leptoquarks using 1.03 fb(-1) of proton-proton collisions data produced by the Large Hadron Collider at root s = 7 TeV and recorded by the ATLAS experiment. Leptoquarks are sought via their decay into an electron or neutrino and a quark, producing events with two oppositely charged electrons and at least two jets, or events with an electron, missing transverse momentum and at least two jets. Control data samples are used to validate background predictions from Monte Carlo simulation. In the signal region, the observed event yields are consistent with the background expectations. We exclude at 95% confidence level the production of first generation scalar leptoquark with masses m(LQ) < 660 (607) GeV when assuming the branching fraction of a leptoquark to a charged lepton is equal to 1.0 (0.5).

Item Type:
Journal Article
Journal or Publication Title:
Physics Letters B
Additional Information:
This article is published Open Access at sciencedirect.com. It is distributed under the terms of the Creative Commons Attribution License 3.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are credited
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3106
Subjects:
ID Code:
68211
Deposited By:
Deposited On:
03 Jan 2014 09:26
Refereed?:
Yes
Published?:
Published
Last Modified:
28 May 2020 03:07