Measurement of the charge asymmetry in top quark pair production in pp collisions at √s=7 TeV using the ATLAS detector
Please always quote using this URN: urn:nbn:de:bvb:20-opus-128904
- A measurement of the top-antitop production charge asymmetry A C is presented using data corresponding to an integrated luminosity of 1.04 fb\(^{−1}\) of pp collisions at √s=7 TeV collected by the ATLAS detector at the LHC. Events are selected with a single lepton (electron or muon), missing transverse momentum and at least four jets of which at least one jet is identified as coming from a b-quark. A kinematic fit is used to reconstruct the t\(\overline t\) event topology. After background subtraction, a Bayesian unfolding procedure isA measurement of the top-antitop production charge asymmetry A C is presented using data corresponding to an integrated luminosity of 1.04 fb\(^{−1}\) of pp collisions at √s=7 TeV collected by the ATLAS detector at the LHC. Events are selected with a single lepton (electron or muon), missing transverse momentum and at least four jets of which at least one jet is identified as coming from a b-quark. A kinematic fit is used to reconstruct the t\(\overline t\) event topology. After background subtraction, a Bayesian unfolding procedure is performed to correct for acceptance and detector effects. The measured value of A\(_C\) is AC=−0.019±0.028 (stat.)±0.024 (syst.), consistent with the prediction from the MC@NLO Monte Carlo generator of A\(_C\) =0.006±0.002. Measurements of A\(_C\) in two ranges of invariant mass of the top-antitop pair are also shown.…
| URN: | urn:nbn:de:bvb:20-opus-128904 |
|---|---|
| Document Type: | Journal article |
| Faculties: | Fakultät für Physik und Astronomie |
| Language: | English |
| Parent Title (English): | The European Physical Journal C |
| Year of Completion: | 2012 |
| Volume: | 72 |
| Issue: | 2039 |
| Source: | European Physical Journal C (2012) 72:2039 DOI 10.1140/epjc/s10052-012-2039-5 |
| DOI: | https://doi.org/10.1140/epjc/s10052-012-2039-5 |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 539 Moderne Physik |
| Tag: | B-tagged jet; JES; fake lepton; heavy flavour; jet energy resolution; jet multiplicity; jet scale energy; light quark jet; multijet background; muon channel; single top event; single top production; systematic uncertainty; top quark masse; top quark pair |
| Release Date: | 2016/11/23 |
| Creating Corporation: | ATLAS Collaboration |
| Licence (German): |  CC BY: Creative-Commons-Lizenz: Namensnennung |