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dc.contributor.author
Aaboud, M.
dc.contributor.author
Aad, G.
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dc.contributor.author
Abbott, B.
dc.contributor.author
Abbott, D. C.
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Abdinov, O.
dc.contributor.author
Abed Abud, A.
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Abhayasinghe, D. K.
dc.contributor.author
Abidi, S. H.
dc.contributor.author
AbouZeid, O. S.
dc.contributor.author
Abraham, N. L.
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Abramowicz, H.
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Abreu, H.
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Abulaiti, Y.
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Acharya, B. S.
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Adachi, S.
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Adam, L.
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Adamczyk, L.
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Adamek, L.
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Adelman, J.
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Adersberger, M.
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Adiguzel, A.
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Adorni, S.
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Adye, T.
dc.contributor.author
Affolder, A. A.
dc.contributor.author
Afik, Y.
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Agapopoulou, C.
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Agaras, M. N.
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Aggarwal, A.
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Agheorghiesei, C.
dc.contributor.author
Arduh, Francisco Anuar
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dc.date.available
2021-07-30T19:06:32Z
dc.date.issued
2019-08-19
dc.identifier.citation
Aaboud, M.; Aad, G. ; Abbott, B.; Abbott, D. C.; Abdinov, O.; et al.; Measurements of top-quark pair spin correlations in the eμ channel at s√=13 TeV using pp collisions in the ATLAS detector; Springer; European Physical Journal C: Particles and Fields; 80; 754; 19-8-2019; 1-64
dc.identifier.issn
1434-6044
dc.identifier.uri
http://hdl.handle.net/11336/137503
dc.description.abstract
A measurement of observables sensitive to spin correlations in tt¯ production is presented, using 36.1 fb−1 of pp collision data at s√=13 TeV recorded with the ATLAS detector at the Large Hadron Collider. Differential cross-sections are measured in events with exactly one electron and one muon with opposite-sign electric charge as a function of the azimuthal opening angle and the absolute difference in pseudorapidity between the electron and muon candidates in the laboratory frame. The azimuthal opening angle is also measured as a function of the invariant mass of the tt¯ system. The measured differential cross-sections are compared to predictions by several NLO Monte Carlo generators and fixed-order calculations. The observed degree of spin correlation is significantly higher than predicted by the generators used, but agrees well with the prediction of one of the fixed-order calculations. Using these leptonic observables, a search is performed for pair production of supersymmetric top squarks decaying into Standard Model top quarks and light neutralinos. Top squark masses between 170 and 230 GeV are largely excluded at the 95% confidence level for kinematically allowed values of the neutralino mass.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ATLAS
dc.subject
HIGH ENERGY PHYSICS
dc.subject.classification
Física de Partículas y Campos
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dc.subject.classification
Ciencias Físicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Measurements of top-quark pair spin correlations in the eμ channel at s√=13 TeV using pp collisions in the ATLAS detector
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-11-27T18:21:12Z
dc.journal.volume
80
dc.journal.number
754
dc.journal.pagination
1-64
dc.journal.pais
Alemania
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dc.journal.ciudad
Berlin
dc.description.fil
Fil: Aaboud, M.. Université Mohamed Premier; Marruecos
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Fil: Aad, G.. Aix Marseille Université; Francia
dc.description.fil
Fil: Abbott, B.. Oklahoma State University; Estados Unidos
dc.description.fil
Fil: Abbott, D. C.. University of Massachusetts; Estados Unidos
dc.description.fil
Fil: Abdinov, O.. Azerbaijan Academy of Sciences; Azerbaiyán
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Fil: Abed Abud, A.. Universita Degli Studi Di Pavia; Italia
dc.description.fil
Fil: Abhayasinghe, D. K.. Royal Holloway University of London; Reino Unido
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Fil: Abidi, S. H.. University of Tokyo; Japón
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Fil: AbouZeid, O. S.. University of Copenhagen; Dinamarca
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Fil: Abraham, N. L.. University of Sussex; Reino Unido
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Fil: Abramowicz, H.. Universitat Tel Aviv; Israel
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Fil: Abreu, H.. Technion - Israel Institute of Technology; Israel
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Fil: Abulaiti, Y.. Argonne National Laboratory; Estados Unidos
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Fil: Acharya, B. S.. Universita Di Udine.; Italia. King’s College London; Reino Unido
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Fil: Adachi, S.. University of Tokyo; Japón
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Fil: Adam, L.. Johannes Gutenberg Universitat Mainz; Alemania
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Fil: Adamczyk, L.. University of Science and Technology; Polonia
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Fil: Adamek, L.. University of Toronto; Canadá
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Fil: Adelman, J.. Northern Illinois University; Estados Unidos
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Fil: Adersberger, M.. Universidad de Múnich; Alemania
dc.description.fil
Fil: Adiguzel, A.. Bogazici University; Turquía. Istanbul University; Turquía
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Fil: Adorni, S.. Universite Ifm Geneve (ifm); Suiza
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Fil: Adye, T.. Rutherford Appleton Laboratory; Reino Unido
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Fil: Affolder, A. A.. University Of California At Santa Cruz.; Estados Unidos
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Fil: Afik, Y.. Technion - Israel Institute of Technology; Israel
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Fil: Agapopoulou, C.. Université Paris Sud; Francia. Université Paris Saclay; Francia
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Fil: Agaras, M. N.. Université Clermont Auvergne; Francia
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Fil: Aggarwal, A.. Radboud University Nijmegen; Países Bajos
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Fil: Agheorghiesei, C.. Alexandru Ioan Cuza University of Iasi; Rumania
dc.description.fil
Fil: Arduh, Francisco Anuar. Cern - European Organization for Nuclear Research; Suiza. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina
dc.journal.title
European Physical Journal C: Particles and Fields
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/arxiv/https://arxiv.org/abs/1903.07570
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1140%2Fepjc%2Fs10052-020-8181-6
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1140/epjc/s10052-020-8181-6
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