@Article{ATLASCollaborationAad_etal2016, author="ATLAS Collaboration (Aad, G. et al and Alvarez Piqueras, D. and Cabrera Urban, S. and Castillo Gimenez, V. and Cerda Alberich, L. and Costa, M. J. and Fernandez Martinez, P. and Ferrer, A. and Fiorini, L. and Fuster, J. and Garcia, C. and Garcia Navarro, J. E. and Gonzalez de la Hoz, S. and Hernandez Jimenez, Y. and Higon-Rodriguez, E. and Irles Quiles, A. and Jimenez Pena, J. and Kaci, M. and King, M. and Lacasta, C. and Lacuesta, V. R. and Marti-Garcia, S. and Mitsou, V. A. and Pedraza Lopez, S. and Perez Garcia-Esta{\~A}{\textpm}, M. T. and Romero Adam, E. and Ros, E. and Salt, J. and Sanchez Martinez, V. and Soldevila, U. and Sanchez, J. and Valero, A. and Valls Ferrer, J. A. and Vos, M.", title="Measurement of the correlation between the polar angles of leptons from top quark decays in the helicity basis at root s=7 TeV using the ATLAS detector", journal="Physical Review D", year="2016", publisher="Amer Physical Soc", volume="93", number="1", pages="012002--23pp", abstract="A measurement of the correlations between the polar angles of leptons from the decay of pair-produced t and (t) over bar quarks in the helicity basis is reported, using proton-proton collision data collected by the ATLAS detector at the LHC. The dataset corresponds to an integrated luminosity of 4.6 fb(-1) at a center-of-mass energy of root s = 7 TeV collected during 2011. Candidate events are selected in the dilepton topology with large missing transverse momentum and at least two jets. The angles theta(1) and theta(2) between the charged leptons and the direction of motion of the parent quarks in the t (t) over bar rest frame are sensitive to the spin information, and the distribution of cos theta(1).cos theta(2) is sensitive to the spin correlation between the t and (t) over bar quarks. The distribution is unfolded to parton level and compared to the next-to-leading order prediction. A good agreement is observed.", optnote="WOS:000368324500002", optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=2537), last updated on Thu, 28 Jul 2016 12:16:51 +0000", issn="1550-7998", doi="10.1103/PhysRevD.93.012002", opturl="http://arxiv.org/abs/1510.07478", opturl="https://doi.org/10.1103/PhysRevD.93.012002", archivePrefix="arXiv", eprint="1510.07478", language="English" }