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Title

Measurement of the mass difference between top and anti-top quarks in pp collisions at √s = 7 TeV using the ATLAS detector

AuthorsAad, G.; Cabrera, Susana ; Castillo, Mª Victoria ; Costa, María José ; Fassi, F. ; Ferrer, Antonio ; Fiorini, L. ; Fuster, Juan ; García García, Carmen ; González de la Hoz, Santiago ; Hernández Jiménez, Yesenia ; Higón, Emilio ; Irles Quiles, Adrián ; Kaci, Mohamed ; Lacasta Llácer, Carlos ; Lacuesta, Vicente ; March, Luis ; Martí García, Salvador ; Miñano, Mercedes ; Mitsou, Vasiliki A. ; Moles Valls, Regina ; Oliver García, Elena ; Pedraza López, Sebastián ; Pérez García-Estañ, María Teresa ; Romero Adam, E. ; Ros, Eduardo ; Salt, José ; Soldevila, Urmila ; Torró Pastor, Emma ; Valero, Alberto ; Valladolid Gallego, Eva ; Valls Ferrer, Juan Antonio ; Villaplana Pérez, Miguel ; Vos, Marcel ; Zwalinski, L.; ATLAS Collaboration
Issue Date6-Dec-2013
PublisherElsevier
CitationPhysics Letters - Section B 728: 363-379 (2014)
AbstractA measurement of the mass difference between top and anti-top quarks is presented. In a 4.7 fb−1 data sample of proton–proton collisions at View the MathML source recorded with the ATLAS detector at the LHC, events consistent with View the MathML source production and decay into a single charged lepton final state are reconstructed. For each event, the mass difference between the top and anti-top quark candidate is calculated. A two b -tag requirement is used in order to reduce the background contribution. A maximum likelihood fit to these per-event mass differences yields View the MathML source, consistent with CPT invariance.
DescriptionAad, G. et al.
Publisher version (URL)http://dx.doi.org/10.1016/j.physletb.2013.12.010
URIhttp://hdl.handle.net/10261/96946
DOI10.1016/j.physletb.2013.12.010
ISSN0370-2693
Appears in Collections:(IFIC) Artículos
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