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Inclusive and differential measurements of the tt- charge asymmetry in proton-proton collisions at s=7 TeV

Abstract: The charge asymmetry is measured in events containing a charged lepton (electron or muon) and at least four jets, one of which is identified as originating from b-quark hadronization. The analyzed dataset corresponds to an integrated luminosity of collected with the CMS detector at the LHC. An inclusive and three differential measurements of the charge asymmetry as a function of rapidity, transverse momentum, and invariant mass of the system are presented. The measured inclusive charge asymmetry is . This result and the three differential measurements are consistent with zero asymmetry as well as with the predictions of the standard model.

Authorship: Chatrchyan S., Khachatryan V., Sirunyan A.M., Tumasyan A., Adam W., Aguilo E., Bergauer T., Dragicevic M., Erö J., Fabjan C., Friedl M., Frühwirth R., Ghete V.M., Hammer J., Hörmann N., Hrubec J., Jeitler M., Kiesenhofer W., Knünz V., Krammer M., Liko D., Mikulec I., Pernicka M., Rahbaran B., Rohringer C., Rohringer H., Schöfbeck R., Strauss J., Taurok A., Wagner P., Waltenberger W., Walzel G., Widl E., Wulz C.E., Mossolov V.,

Fuente: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2012, 717(1-3), 129-150

Publisher: Elsevier

Publication date: 01/10/2012

No. of pages: 22

Publication type: Article

DOI: 10.1016/j.physletb.2012.09.028

ISSN: 0370-2693,1873-2445

Publication Url: https://doi.org/10.1016/j.physletb.2012.09.028

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