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Article: Searches for scalar leptoquarks and differential cross-section measurements in dilepton–dijet events in proton–proton collisions at a centre-of-mass energy of √s = 13 TeV with the ATLAS experiment
Title | Searches for scalar leptoquarks and differential cross-section measurements in dilepton–dijet events in proton–proton collisions at a centre-of-mass energy of √s = 13 TeV with the ATLAS experiment |
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Authors | |
Keywords | Collisions Jets Proton–proton collisions |
Issue Date | 2019 |
Publisher | Springer Verlag (Germany): SCOAP3. The Journal's web site is located at http://epjc.edpsciences.org |
Citation | The European Physical Journal C: Particles and Fields, 2019, v. 79 n. 9, p. article no. 733 How to Cite? |
Abstract | Searches for scalar leptoquarks pair-produced in proton–proton collisions at s√=13 TeV at the Large Hadron Collider are performed by the ATLAS experiment. A data set corresponding to an integrated luminosity of 36.1 fb −1 is used. Final states containing two electrons or two muons and two or more jets are studied, as are states with one electron or muon, missing transverse momentum and two or more jets. No statistically significant excess above the Standard Model expectation is observed. The observed and expected lower limits on the leptoquark mass at 95% confidence level extend up to 1.29 TeV and 1.23 TeV for first- and second-generation leptoquarks, respectively, as postulated in the minimal Buchmüller–Rückl–Wyler model, assuming a branching ratio into a charged lepton and a quark of 50%. In addition, measurements of particle-level fiducial and differential cross sections are presented for the Z→ee , Z→μμ and tt¯ processes in several regions related to the search control regions. Predictions from a range of generators are compared with the measurements, and good agreement is seen for many of the observables. However, the predictions for the Z→ℓℓ measurements in observables sensitive to jet energies disagree with the data. |
Persistent Identifier | http://hdl.handle.net/10722/277507 |
ISSN | 2023 Impact Factor: 4.2 2023 SCImago Journal Rankings: 1.451 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Lo, CY | - |
dc.contributor.author | Orlando, N | - |
dc.contributor.author | Paredes Hernandez, D | - |
dc.contributor.author | Salvucci, A | - |
dc.contributor.author | Tu, Y | - |
dc.contributor.author | ATLAS Collaboration | - |
dc.date.accessioned | 2019-09-20T08:52:24Z | - |
dc.date.available | 2019-09-20T08:52:24Z | - |
dc.date.issued | 2019 | - |
dc.identifier.citation | The European Physical Journal C: Particles and Fields, 2019, v. 79 n. 9, p. article no. 733 | - |
dc.identifier.issn | 1434-6044 | - |
dc.identifier.uri | http://hdl.handle.net/10722/277507 | - |
dc.description.abstract | Searches for scalar leptoquarks pair-produced in proton–proton collisions at s√=13 TeV at the Large Hadron Collider are performed by the ATLAS experiment. A data set corresponding to an integrated luminosity of 36.1 fb −1 is used. Final states containing two electrons or two muons and two or more jets are studied, as are states with one electron or muon, missing transverse momentum and two or more jets. No statistically significant excess above the Standard Model expectation is observed. The observed and expected lower limits on the leptoquark mass at 95% confidence level extend up to 1.29 TeV and 1.23 TeV for first- and second-generation leptoquarks, respectively, as postulated in the minimal Buchmüller–Rückl–Wyler model, assuming a branching ratio into a charged lepton and a quark of 50%. In addition, measurements of particle-level fiducial and differential cross sections are presented for the Z→ee , Z→μμ and tt¯ processes in several regions related to the search control regions. Predictions from a range of generators are compared with the measurements, and good agreement is seen for many of the observables. However, the predictions for the Z→ℓℓ measurements in observables sensitive to jet energies disagree with the data. | - |
dc.language | eng | - |
dc.publisher | Springer Verlag (Germany): SCOAP3. The Journal's web site is located at http://epjc.edpsciences.org | - |
dc.relation.ispartof | The European Physical Journal C: Particles and Fields | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
dc.subject | Collisions | - |
dc.subject | Jets | - |
dc.subject | Proton–proton collisions | - |
dc.title | Searches for scalar leptoquarks and differential cross-section measurements in dilepton–dijet events in proton–proton collisions at a centre-of-mass energy of √s = 13 TeV with the ATLAS experiment | - |
dc.type | Article | - |
dc.identifier.email | Paredes Hernandez, D: dparedes@hku.hk | - |
dc.identifier.email | Tu, Y: yanjuntu@hku.hk | - |
dc.identifier.authority | Tu, Y=rp01971 | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1140/epjc/s10052-019-7181-x | - |
dc.identifier.scopus | eid_2-s2.0-85071746450 | - |
dc.identifier.hkuros | 305939 | - |
dc.identifier.volume | 79 | - |
dc.identifier.issue | 9 | - |
dc.identifier.spage | article no. 733 | - |
dc.identifier.epage | article no. 733 | - |
dc.identifier.isi | WOS:000483795600002 | - |
dc.publisher.place | Germany | - |
dc.identifier.issnl | 1434-6044 | - |