Probing effective field theory operators in the associated production of top quarks with a Z boson in multilepton final states at root s=13 TeV
Abstract:
A search for new top quark interactions is performed within the framework of an effective field theory using the associated production of either one or two top quarks with a Z boson in multilepton final states. The data sample corresponds to an integrated luminosity of 138 fb(-1) of proton-proton collisions at root s = 13 TeV collected by the CMS experiment at the LHC. Five dimension-six operators modifying the electroweak interactions of the top quark are considered. Novel machine-learning techniques are used to enhance the sensitivity to effects arising from these operators. Distributions used for the signal extraction are parameterized in terms of Wilson coefficients describing the interaction strengths of the operators. All five Wilson coefficients are simultaneously fit to data and 95% confidence level intervals are computed. All results are consistent with the SM expectations.
Files in this item
Related items
Show items related to title, author, creator, and subject.
-
Title: Guidelines for the use and interpretation of assays for monitoring autophagy (4th edition)
Author: Klionsky, Daniel J.; Abdel-Aziz, Amal Kamal; Abdelfatah, Sara; Abdellatif, Mahmoud; Abdoli, Asghar; Abel, Steffen; Abeliovich, Hagai; Abildgaard, Marie H.; Abudu, Yakubu Princely; Acevedo-Arozena, Abraham
Date: 2021
Submitted: 2024-08-16
-
Title: Observation of tW production in the single-lepton channel in pp collisions at √s = 13 TeV
Author: Tumasyan, A.; Adam, W.; Andrejkovic, J.W.; Bergauer, T.; Chatterjee, S.; Dragicevic, M.; Del Valle, A.E.; Frühwirth, R.; Jeitler, M.; Krammer, N.
Date: 2021
Submitted: 2024-08-15
-
Title: Search for a heavy Higgs boson decaying into two lighter Higgs bosons in the ττbb final state at 13 TeV
Author: Tumasyan, A.; Adam, W.; Andrejkovic, J.W.; Bergauer, T.; Chatterjee, S.; Dragicevic, M.; Escalante, Del Valle A.; Frühwirth, R.; Jeitler, M.; Krammer, N.
Date: 2021
Submitted: 2024-08-15