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Search for physics beyond the standard model in top quark production with additional leptons in the context of effective field theory.
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- المؤلفون: Hayrapetyan, A.1 (AUTHOR); Tumasyan, A.1,2 (AUTHOR); Adam, W.3 (AUTHOR); Andrejkovic, J. W.3 (AUTHOR); Bergauer, T.3 (AUTHOR); Chatterjee, S.3,4 (AUTHOR); Damanakis, K.3 (AUTHOR); Dragicevic, M.3 (AUTHOR); Escalante Del Valle, A.3 (AUTHOR); Hussain, P. S.3 (AUTHOR); Jeitler, M.3,5 (AUTHOR); Krammer, N.3 (AUTHOR); Liko, D.3 (AUTHOR); Mikulec, I.3 (AUTHOR); Schieck, J.3,5 (AUTHOR); Schöfbeck, R.3 (AUTHOR); Schwarz, D.3 (AUTHOR); Sonawane, M.3 (AUTHOR); Templ, S.3 (AUTHOR); Waltenberger, W.3 (AUTHOR)
- المصدر:
Journal of High Energy Physics. Dec2023, Vol. 2023 Issue 12, p1-58. 58p.
- الموضوع:
- معلومة اضافية
- نبذة مختصرة :
A search for new physics in top quark production with additional final-state leptons is performed using data collected by the CMS experiment in proton-proton collisions at s = 13 TeV at the LHC during 2016–2018. The data set corresponds to an integrated luminosity of 138 fb−1. Using the framework of effective field theory (EFT), potential new physics effects are parametrized in terms of 26 dimension-six EFT operators. The impacts of EFT operators are incorporated through the event-level reweighting of Monte Carlo simulations, which allows for detector-level predictions. The events are divided into several categories based on lepton multiplicity, total lepton charge, jet multiplicity, and b-tagged jet multiplicity. Kinematic variables corresponding to the transverse momentum (pT) of the leading pair of leptons and/or jets as well as the pT of on-shell Z bosons are used to extract the 95% confidence intervals of the 26 Wilson coefficients corresponding to these EFT operators. No significant deviation with respect to the standard model prediction is found. [ABSTRACT FROM AUTHOR]
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