Search for pairs of scalar leptoquarks decaying into quarks and electrons or muons in √s = 13 TeV pp collisions with the ATLAS detector

ATLAS Publications; T.M. Carter; M. Faucci Giannelli; A. Hasib; M.P. Heath; S. Palazzo; A. Søgaard; A. Strubig; E.P. Takeva; A.J. Taylor; N. Themistokleous; E.M. Villhauer

doi:10.1007/JHEP10(2020)112

Search for pairs of scalar leptoquarks decaying into quarks and electrons or muons in √s = 13 TeV pp collisions with the ATLAS detector

ATLAS Publications, T.M. Carter, M. Faucci Giannelli, A. Hasib, M.P. Heath, S. Palazzo, A. Søgaard, A. Strubig, E.P. Takeva, A.J. Taylor, N. Themistokleous, E.M. Villhauer

School of Physics and Astronomy

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

Abstract

A search for new-physics resonances decaying into a lepton and a jet performed
by the ATLAS experiment is presented. Scalar leptoquarks pair-produced in pp collisions at √s = 13 TeV at the Large Hadron Collider are considered using an integrated luminosity of 139 fb−1, corresponding to the full Run 2 dataset. They are searched for in events with two electrons or two muons and two or more jets, including jets identified as arising from the fragmentation of c- or b-quarks. The observed yield in each channel is consistent with the Standard Model background expectation. Leptoquarks with masses below 1.8 TeV and
1.7 TeV are excluded in the electron and muon channels, respectively, assuming a branching ratio into a charged lepton and a quark of 100%, with minimal dependence on the quark flavour. Upper limits on the aforementioned branching ratio are also given as a function of the leptoquark mass.

Original language	English
Article number	112
Pages (from-to)	1-44
Number of pages	44
Journal	Journal of High Energy Physics
Volume	2020
Issue number	10
DOIs	https://doi.org/10.1007/JHEP10(2020)112
Publication status	Published - 16 Oct 2020

Keywords / Materials (for Non-textual outputs)

Beyond Standard Model
Exotics
Hadron-Hadron scattering (experiments)
Particle and resonance production

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10.1007/JHEP10(2020)112Licence: Creative Commons: Attribution (CC-BY)

http://arxiv.org/abs/2006.05872

3 Finished
3 Active

Experimental Particle Physics at the University of Edinburgh
Leonidopoulos, C. (Principal Investigator)
1/04/23 → 30/09/25
Project: Research
Upgrade of the ATLAS detector at the LHC (2023-26)
Clark, P. (Principal Investigator)
1/04/23 → 31/03/26
Project: Research
Experimental Particle Physics at the University of Edinburgh
Leonidopoulos, C. (Principal Investigator)
1/10/22 → 30/09/25
Project: Research

Cite this

ATLAS Publications, Carter, T. M., Faucci Giannelli, M., Hasib, A., Heath, M. P., Palazzo, S., Søgaard, A., Strubig, A., Takeva, E. P., Taylor, A. J., Themistokleous, N., & Villhauer, E. M. (2020). Search for pairs of scalar leptoquarks decaying into quarks and electrons or muons in √s = 13 TeV pp collisions with the ATLAS detector. Journal of High Energy Physics, 2020(10), 1-44. Article 112. https://doi.org/10.1007/JHEP10(2020)112

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abstract = "A search for new-physics resonances decaying into a lepton and a jet performedby the ATLAS experiment is presented. Scalar leptoquarks pair-produced in pp collisions at √s = 13 TeV at the Large Hadron Collider are considered using an integrated luminosity of 139 fb−1, corresponding to the full Run 2 dataset. They are searched for in events with two electrons or two muons and two or more jets, including jets identified as arising from the fragmentation of c- or b-quarks. The observed yield in each channel is consistent with the Standard Model background expectation. Leptoquarks with masses below 1.8 TeV and1.7 TeV are excluded in the electron and muon channels, respectively, assuming a branching ratio into a charged lepton and a quark of 100%, with minimal dependence on the quark flavour. Upper limits on the aforementioned branching ratio are also given as a function of the leptoquark mass.",

keywords = "Beyond Standard Model, Exotics, Hadron-Hadron scattering (experiments), Particle and resonance production",

author = "{ATLAS Publications} and Clark, {Philip James} and Sinead Farrington and Yanyan Gao and Christos Leonidopoulos and Martin, {Victoria Jane} and Liza Mijovic and Benjamin Wynne and T.M. Carter and {Faucci Giannelli}, M. and A. Hasib and M.P. Heath and S. Palazzo and A. S{\o}gaard and A. Strubig and E.P. Takeva and A.J. Taylor and N. Themistokleous and E.M. Villhauer",

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ATLAS Publications, Carter, TM, Faucci Giannelli, M, Hasib, A, Heath, MP, Palazzo, S, Søgaard, A, Strubig, A, Takeva, EP, Taylor, AJ, Themistokleous, N & Villhauer, EM 2020, 'Search for pairs of scalar leptoquarks decaying into quarks and electrons or muons in √s = 13 TeV pp collisions with the ATLAS detector', Journal of High Energy Physics, vol. 2020, no. 10, 112, pp. 1-44. https://doi.org/10.1007/JHEP10(2020)112

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AU - ATLAS Publications

AU - Clark, Philip James

AU - Farrington, Sinead

AU - Gao, Yanyan

AU - Leonidopoulos, Christos

AU - Martin, Victoria Jane

AU - Mijovic, Liza

AU - Wynne, Benjamin

AU - Carter, T.M.

AU - Faucci Giannelli, M.

AU - Hasib, A.

AU - Heath, M.P.

AU - Palazzo, S.

AU - Søgaard, A.

AU - Strubig, A.

AU - Takeva, E.P.

AU - Taylor, A.J.

AU - Themistokleous, N.

AU - Villhauer, E.M.

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AB - A search for new-physics resonances decaying into a lepton and a jet performedby the ATLAS experiment is presented. Scalar leptoquarks pair-produced in pp collisions at √s = 13 TeV at the Large Hadron Collider are considered using an integrated luminosity of 139 fb−1, corresponding to the full Run 2 dataset. They are searched for in events with two electrons or two muons and two or more jets, including jets identified as arising from the fragmentation of c- or b-quarks. The observed yield in each channel is consistent with the Standard Model background expectation. Leptoquarks with masses below 1.8 TeV and1.7 TeV are excluded in the electron and muon channels, respectively, assuming a branching ratio into a charged lepton and a quark of 100%, with minimal dependence on the quark flavour. Upper limits on the aforementioned branching ratio are also given as a function of the leptoquark mass.

KW - Beyond Standard Model

KW - Exotics

KW - Hadron-Hadron scattering (experiments)

KW - Particle and resonance production

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ER -

Search for pairs of scalar leptoquarks decaying into quarks and electrons or muons in √s = 13 TeV pp collisions with the ATLAS detector

Abstract

Keywords / Materials (for Non-textual outputs)

Access to Document

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Projects

Experimental Particle Physics at the University of Edinburgh

Upgrade of the ATLAS detector at the LHC (2023-26)

Experimental Particle Physics at the University of Edinburgh

Cite this