Search for contact interactions in dilepton events from pp collisions at with the ATLAS detector

G. Aad; Mogens Dam; Jørgen Beck Hansen; Peter Henrik Hansen; John Renner Hansen; Jørn Dines Hansen; Morten Dam Jørgensen; Sascha Mehlhase; Nele Maria Philomena Boelaert; Simon Johann Franz Heisterkamp; Esben Bryndt Klinkby; Björn Stefan Nilsson; Troels Christian Petersen; Stefania Xella; Ask Emil Løvschall-Jensen

doi:10.1016/j.physletb.2012.04.026

Search for contact interactions in dilepton events from pp collisions at with the ATLAS detector

G. Aad, Mogens Dam, Jørgen Beck Hansen, Peter Henrik Hansen, John Renner Hansen, Jørn Dines Hansen, Morten Dam Jørgensen, Sascha Mehlhase, Nele Maria Philomena Boelaert, Simon Johann Franz Heisterkamp, Esben Bryndt Klinkby, Björn Stefan Nilsson, Troels Christian Petersen, Stefania Xella, Ask Emil Løvschall-Jensen

9 Citationer (Scopus)

Abstract

This Letter presents a search for contact interactions in the dielectron and dimuon channels using data from proton-proton collisions produced by the LHC at s=7 TeV and recorded by the ATLAS detector. The data sample, collected in 2011, corresponds to an integrated luminosity of 1.08 and 1.21 fb ^-1 in the e ⁺ e ^- and μ ⁺ μ ^- channels, respectively. No significant deviations from the standard model are observed. Using a Bayesian approach with a prior flat in 1/Λ ² , the following 95% CL lower limits are placed on the energy scale of ℓℓqq contact interactions: Λ ^- >10.1 TeV (Λ ⁺ >9.4 TeV) in the electron channel and Λ ^- >8.0 TeV (Λ ⁺ >7.0 TeV) in the muon channel for constructive (destructive) interference in the left-left isoscalar contact interaction model. Limits are also provided for a prior flat in 1/Λ ⁴ .

Originalsprog	Engelsk
Tidsskrift	Physics Letters B
Vol/bind	712
Udgave nummer	1-2
Sider (fra-til)	40-58
Antal sider	18
ISSN	0370-2693
DOI	https://doi.org/10.1016/j.physletb.2012.04.026
Status	Udgivet - 30 maj 2012

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10.1016/j.physletb.2012.04.026Licens: CC BY-NC-ND

http://repository.library.fresnostate.edu/bitstream/10211.3/169430/1/Search%20for%20contact%20interactions%20in%20dilepton%20events%20from%20pp.pdfLicens: CC BY

Citationsformater

Aad, G., Dam, M., Hansen, J. B., Hansen, P. H., Hansen, J. R., Hansen, J. D., Jørgensen, M. D., Mehlhase, S., Boelaert, N. M. P., Heisterkamp, S. J. F., Klinkby, E. B., Nilsson, B. S., Petersen, T. C., Xella, S., & Løvschall-Jensen, A. E. (2012). Search for contact interactions in dilepton events from pp collisions at with the ATLAS detector. Physics Letters B, 712(1-2), 40-58. https://doi.org/10.1016/j.physletb.2012.04.026

Aad, G, Dam, M , Hansen, JB , Hansen, PH , Hansen, JR , Hansen, JD, Jørgensen, MD, Mehlhase, S, Boelaert, NMP, Heisterkamp, SJF, Klinkby, EB, Nilsson, BS, Petersen, TC , Xella, S & Løvschall-Jensen, AE 2012, 'Search for contact interactions in dilepton events from pp collisions at with the ATLAS detector', Physics Letters B, bind 712, nr. 1-2, s. 40-58. https://doi.org/10.1016/j.physletb.2012.04.026

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title = "Search for contact interactions in dilepton events from pp collisions at with the ATLAS detector",

abstract = " This Letter presents a search for contact interactions in the dielectron and dimuon channels using data from proton-proton collisions produced by the LHC at s=7 TeV and recorded by the ATLAS detector. The data sample, collected in 2011, corresponds to an integrated luminosity of 1.08 and 1.21 fb -1 in the e + e - and μ + μ - channels, respectively. No significant deviations from the standard model are observed. Using a Bayesian approach with a prior flat in 1/Λ 2 , the following 95% CL lower limits are placed on the energy scale of ℓℓqq contact interactions: Λ - >10.1 TeV (Λ + >9.4 TeV) in the electron channel and Λ - >8.0 TeV (Λ + >7.0 TeV) in the muon channel for constructive (destructive) interference in the left-left isoscalar contact interaction model. Limits are also provided for a prior flat in 1/Λ 4 .",

author = "G. Aad and Mogens Dam and Hansen, {J{\o}rgen Beck} and Hansen, {Peter Henrik} and Hansen, {John Renner} and Hansen, {J{\o}rn Dines} and J{\o}rgensen, {Morten Dam} and Sascha Mehlhase and Boelaert, {Nele Maria Philomena} and Heisterkamp, {Simon Johann Franz} and Klinkby, {Esben Bryndt} and Nilsson, {Bj{\"o}rn Stefan} and Petersen, {Troels Christian} and Stefania Xella and L{\o}vschall-Jensen, {Ask Emil}",

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T1 - Search for contact interactions in dilepton events from pp collisions at with the ATLAS detector

AU - Aad, G.

AU - Dam, Mogens

AU - Hansen, Jørgen Beck

AU - Hansen, Peter Henrik

AU - Hansen, John Renner

AU - Hansen, Jørn Dines

AU - Jørgensen, Morten Dam

AU - Mehlhase, Sascha

AU - Boelaert, Nele Maria Philomena

AU - Heisterkamp, Simon Johann Franz

AU - Klinkby, Esben Bryndt

AU - Nilsson, Björn Stefan

AU - Petersen, Troels Christian

AU - Xella, Stefania

AU - Løvschall-Jensen, Ask Emil

PY - 2012/5/30

Y1 - 2012/5/30

N2 - This Letter presents a search for contact interactions in the dielectron and dimuon channels using data from proton-proton collisions produced by the LHC at s=7 TeV and recorded by the ATLAS detector. The data sample, collected in 2011, corresponds to an integrated luminosity of 1.08 and 1.21 fb -1 in the e + e - and μ + μ - channels, respectively. No significant deviations from the standard model are observed. Using a Bayesian approach with a prior flat in 1/Λ 2 , the following 95% CL lower limits are placed on the energy scale of ℓℓqq contact interactions: Λ - >10.1 TeV (Λ + >9.4 TeV) in the electron channel and Λ - >8.0 TeV (Λ + >7.0 TeV) in the muon channel for constructive (destructive) interference in the left-left isoscalar contact interaction model. Limits are also provided for a prior flat in 1/Λ 4 .

AB - This Letter presents a search for contact interactions in the dielectron and dimuon channels using data from proton-proton collisions produced by the LHC at s=7 TeV and recorded by the ATLAS detector. The data sample, collected in 2011, corresponds to an integrated luminosity of 1.08 and 1.21 fb -1 in the e + e - and μ + μ - channels, respectively. No significant deviations from the standard model are observed. Using a Bayesian approach with a prior flat in 1/Λ 2 , the following 95% CL lower limits are placed on the energy scale of ℓℓqq contact interactions: Λ - >10.1 TeV (Λ + >9.4 TeV) in the electron channel and Λ - >8.0 TeV (Λ + >7.0 TeV) in the muon channel for constructive (destructive) interference in the left-left isoscalar contact interaction model. Limits are also provided for a prior flat in 1/Λ 4 .

U2 - 10.1016/j.physletb.2012.04.026

DO - 10.1016/j.physletb.2012.04.026

M3 - Journal article

SN - 0370-2693

VL - 712

SP - 40

EP - 58

JO - Physics Letters B: Particle Physics, Nuclear Physics and Cosmology

JF - Physics Letters B: Particle Physics, Nuclear Physics and Cosmology

IS - 1-2

ER -

Search for contact interactions in dilepton events from pp collisions at with the ATLAS detector

Abstract

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