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Measurement of the top quark forward-backward production asymmetry and the anomalous chromoelectric and chromomagnetic moments in pp collisions at s√ = 13 TeV
dc.contributor.author | CMS Collaboration | |
dc.date.accessioned | 2022-08-31T21:41:58Z | |
dc.date.available | 2022-08-31T21:41:58Z | |
dc.date.issued | 2020-06-24 | |
dc.identifier.citation | The CMS collaboration., Sirunyan, A.M., Tumasyan, A. et al. Measurement of the top quark forward-backward production asymmetry and the anomalous chromoelectric and chromomagnetic moments in pp collisions at s√ = 13 TeV. J. High Energ. Phys. 2020, 146 (2020). https://doi.org/10.1007/JHEP06(2020)146 | en_US |
dc.identifier.uri | http://hdl.handle.net/1808/33387 | |
dc.description.abstract | The parton-level top quark (t) forward-backward asymmetry and the anomalous chromoelectric (d^t) and chromomagnetic (μ^t) moments have been measured using LHC pp collisions at a center-of-mass energy of 13 TeV, collected in the CMS detector in a data sample corresponding to an integrated luminosity of 35.9 fb−1. The linearized variable A(1)FB is used to approximate the asymmetry. Candidate tt¯ events decaying to a muon or electron and jets in final states with low and high Lorentz boosts are selected and reconstructed using a fit of the kinematic distributions of the decay products to those expected for tt¯ final states. The values found for the parameters are A(1)FB=0.048+0.095−0.087(stat)+0.020−0.029(syst),μ^t=−0.024+0.013−0.009(stat)+0.016−0.011(syst), and a limit is placed on the magnitude of ∣∣d^t∣∣< 0.03 at 95% confidence level. | en_US |
dc.publisher | Frontiers Media | en_US |
dc.rights | Copyright CERN, for the benefit of the CMS Collaboration. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0). | en_US |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | en_US |
dc.subject | Hadron-Hadron scattering (experiments) | en_US |
dc.subject | Top physics | en_US |
dc.title | Measurement of the top quark forward-backward production asymmetry and the anomalous chromoelectric and chromomagnetic moments in pp collisions at s√ = 13 TeV | en_US |
dc.type | Article | en_US |
kusw.kuauthor | Bean, Alice Louise | |
kusw.kudepartment | Physics & Astronomy | en_US |
dc.identifier.doi | 10.1007/JHEP06(2020)146 | en_US |
kusw.oaversion | Scholarly/refereed, publisher version | en_US |
kusw.oapolicy | This item meets KU Open Access policy criteria. | en_US |
dc.rights.accessrights | openAccess | en_US |