Journal article
Measurements of tt charge asymmetry using dilepton final states in pp collisions at √s = 8 TeV
Physics letters B Nuclear, elementary particle and high-energy physics, Vol.760, pp.365-386
09/10/2016
DOI: 10.1016/j.physletb.2016.07.006
Appears in Diamond Open Access
Abstract
The charge asymmetry in tt events is measured using dilepton final states produced in pp collisions at
the LHC at √s = 8 TeV. The data sample, collected with the CMS detector, corresponds to an integrated
luminosity of 19.5 fb−1. The measurements are performed using events with two oppositely charged
leptons (electrons or muons) and two or more jets, where at least one of the jets is identified as
originating from a bottom quark. The charge asymmetry is measured from differences in kinematic
distributions, unfolded to the parton level, of positively and negatively charged top quarks and leptons.
The tt and leptonic inclusive charge asymmetries are found to be 0.011 ± 0.011 (stat) ± 0.007 (syst) and
0.003±0.006 (stat)±0.003 (syst), respectively. These results, as well as charge asymmetry measurements
made as a function of the invariant mass, rapidity, and transverse momentum of the tt system, are in
agreement with predictions of the standard model.
Details
- Title: Subtitle
- Measurements of tt charge asymmetry using dilepton final states in pp collisions at √s = 8 TeV
- Creators
- CMS Collaboration (Institution)
- Contributors
- B. Bilki (Contributor) - University of IowaW Clarida (Contributor) - University of IowaKamuran Dilsiz (Contributor) - University of Iowa, Physics and AstronomyS. Durgut (Contributor) - University of IowaR. P. Gandrajula (Contributor) - University of IowaM. Haytmyradov (Contributor) - University of IowaV Khristenko (Contributor) - University of IowaJ-P Merlo (Contributor) - University of IowaH Mermerkaya (Contributor) - University of IowaAlexi Mestvirishvili (Contributor) - University of Iowa, Physics and AstronomyA. Moeller (Contributor) - University of IowaJane M Nachtman (Contributor) - University of Iowa, Physics and AstronomyHasan Ogul (Contributor) - University of Iowa, Physics and AstronomyYasar Onel (Contributor) - University of Iowa, Physics and AstronomyF. Ozok (Contributor) - University of IowaAldo Penzo (Contributor) - University of Iowa, Physics and AstronomyC. Snyder (Contributor) - University of IowaE. Tiras (Contributor) - University of IowaJames W Wetzel (Contributor) - University of Iowa, Physics and AstronomyKai Yi (Contributor) - University of Iowa, Physics and Astronomy
- Resource Type
- Journal article
- Publication Details
- Physics letters B Nuclear, elementary particle and high-energy physics, Vol.760, pp.365-386
- DOI
- 10.1016/j.physletb.2016.07.006
- ISSN
- 1873-2445
- Publisher
- Elsevier
- Grant note
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- Language
- English
- Date published
- 09/10/2016
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984439157602771
Metrics
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