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dc.date.accessioned | 2022-02-16T19:00:09Z | |
dc.date.available | 2022-02-16T19:00:09Z | |
dc.date.issued | 2012-05 | |
dc.identifier.uri | http://sedici.unlp.edu.ar/handle/10915/131228 | |
dc.description.abstract | A measurement of spin correlation in tt̄ production is reported using data collected with the ATLAS detector at the LHC, corresponding to an integrated luminosity of 2.1 fb⁻¹. Candidate events are selected in the dilepton topology with large missing transverse energy and at least two jets. The difference in azimuthal angle between the two charged leptons in the laboratory frame is used to extract the correlation between the top and antitop quark spins. In the helicity basis the measured degree of correlation corresponds to Ahelicity = 0.40+0:09-0.08, in agreement with the next-to-leading-order standard model prediction. The hypothesis of zero spin correlation is excluded at 5.1 standard deviations. | en |
dc.language | en | es |
dc.subject | Top quarks | es |
dc.subject | Experimental tests | es |
dc.subject | Inclusive production with identified leptons, photons, or other nonhadronic particles | es |
dc.title | Observation of spin correlation in tt̄ events from pp collisions at √s = 7 TeV Using the ATLAS detector | en |
dc.type | Articulo | es |
sedici.identifier.other | doi:10.1103/physrevlett.108.212001 | es |
sedici.identifier.other | pmid:23003244 | es |
sedici.identifier.issn | 1079-7114 | es |
sedici.identifier.issn | 0031-9007 | es |
sedici.creator.person | Anduaga, Xabier Sebastián | es |
sedici.creator.person | Dova, María Teresa | es |
sedici.creator.person | Monticelli, Fernando Gabriel | es |
sedici.creator.person | Tripiana, Martín Fernando | es |
sedici.creator.corporate | The ATLAS Collaboration | es |
sedici.description.note | La lista completa de autores que integran el documento puede consultarse en el archivo. | es |
sedici.subject.materias | Ciencias Exactas | es |
sedici.subject.materias | Física | es |
sedici.description.fulltext | true | es |
mods.originInfo.place | Facultad de Ciencias Exactas | es |
mods.originInfo.place | Instituto de Física La Plata | es |
sedici.subtype | Articulo | es |
sedici.rights.license | Creative Commons Attribution 3.0 Unported (CC BY 3.0) | |
sedici.rights.uri | http://creativecommons.org/licenses/by/3.0/ | |
sedici.description.peerReview | peer-review | es |
sedici.relation.journalTitle | Physical Review Letters | es |
sedici.relation.journalVolumeAndIssue | vol. 108, no. 21 | es |