Pinning down electroweak dipole operators of the top quark
Abstract
Here, we consider hadronic top quark pair production and pair production in association with a photon or a Z boson to probe electroweak dipole couplings in tb¯W, tt¯γ, and tt¯Z interactions. We demonstrate how measurements of these processes at the 13 TeV LHC can be combined to disentangle and constrain anomalous dipole operators. The construction of cross section ratios allows us to significantly reduce various uncertainties and exploit orthogonal sensitivity between the tt¯γ and tt¯Z couplings. In addition, we show that angular correlations in tt¯ production can be used to constrain the remaining tb¯W dipole operator. Our approach yields excellent sensitivity to the anomalous couplings and can be a further step toward precise and direct measurements of the top quark electroweak interactions.
- Authors:
-
- European Organization for Nuclear Research (CERN), Geneva (Switzerland)
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
- Publication Date:
- Research Org.:
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1361700
- Grant/Contract Number:
- SC0012567
- Resource Type:
- Accepted Manuscript
- Journal Name:
- European Physical Journal. C, Particles and Fields
- Additional Journal Information:
- Journal Volume: 76; Journal Issue: 8; Journal ID: ISSN 1434-6044
- Publisher:
- Springer
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Schulze, Markus, and Soreq, Yotam. Pinning down electroweak dipole operators of the top quark. United States: N. p., 2016.
Web. doi:10.1140/epjc/s10052-016-4263-x.
Schulze, Markus, & Soreq, Yotam. Pinning down electroweak dipole operators of the top quark. United States. https://doi.org/10.1140/epjc/s10052-016-4263-x
Schulze, Markus, and Soreq, Yotam. Fri .
"Pinning down electroweak dipole operators of the top quark". United States. https://doi.org/10.1140/epjc/s10052-016-4263-x. https://www.osti.gov/servlets/purl/1361700.
@article{osti_1361700,
title = {Pinning down electroweak dipole operators of the top quark},
author = {Schulze, Markus and Soreq, Yotam},
abstractNote = {Here, we consider hadronic top quark pair production and pair production in association with a photon or a Z boson to probe electroweak dipole couplings in tb¯W, tt¯γ, and tt¯Z interactions. We demonstrate how measurements of these processes at the 13 TeV LHC can be combined to disentangle and constrain anomalous dipole operators. The construction of cross section ratios allows us to significantly reduce various uncertainties and exploit orthogonal sensitivity between the tt¯γ and tt¯Z couplings. In addition, we show that angular correlations in tt¯ production can be used to constrain the remaining tb¯W dipole operator. Our approach yields excellent sensitivity to the anomalous couplings and can be a further step toward precise and direct measurements of the top quark electroweak interactions.},
doi = {10.1140/epjc/s10052-016-4263-x},
journal = {European Physical Journal. C, Particles and Fields},
number = 8,
volume = 76,
place = {United States},
year = {Fri Aug 19 00:00:00 EDT 2016},
month = {Fri Aug 19 00:00:00 EDT 2016}
}
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O new physics, where art thou? A global search in the top sector
text, January 2019
- Brivio, I.; Bruggisser, S.; Maltoni, F.
- arXiv
Measurement of top quark pair production in association with a Z boson in proton-proton collisions at s$$ \sqrt{\mathrm{s}} $$ = 13 TeV
journal, March 2020
- Sirunyan, A. M.; Tumasyan, A.; Adam, W.
- Journal of High Energy Physics, Vol. 2020, Issue 3
A Monte Carlo global analysis of the Standard Model Effective Field Theory: the top quark sector
journal, April 2019
- Hartland, Nathan P.; Maltoni, Fabio; Nocera, Emanuele R.
- Journal of High Energy Physics, Vol. 2019, Issue 4
Measurement of the t t ¯ γ $$ t\overline{t}\gamma $$ production cross section in proton-proton collisions at s = 8 $$ \sqrt{s}=8 $$ TeV with the ATLAS detector
journal, November 2017
- Aaboud, M.; Aad, G.; Abbott, B.
- Journal of High Energy Physics, Vol. 2017, Issue 11
Constraining top quark flavor violation and dipole moments through three and four top quark productions at the LHC
journal, November 2018
- Malekhosseini, Malihe; Ghominejad, Mehrdad; Khanpour, Hamzeh
- Physical Review D, Vol. 98, Issue 9
Measurements of inclusive and differential fiducial cross-sections of $$t\bar{t}\gamma $$ production in leptonic final states at $$\sqrt{s}=13~\text {TeV}$$ in ATLAS
journal, May 2019
- Aaboud, M.; Aad, G.; Abbott, B.
- The European Physical Journal C, Vol. 79, Issue 5
CP-violating top quark couplings at future linear $e^+e^-$ colliders
text, January 2018
- Bernreuther, Werner; Chen, L.; García, Ignacio
- RWTH Aachen University
Constraining the SMEFT with Bayesian reweighting
journal, January 2019
- van Beek, Samuel; Nocera, Emanuele Roberto; Rojo, Juan
- SciPost Physics, Vol. 7, Issue 5
Automated EW corrections with isolated photons: $t \bar t \gamma$, $t \bar t \gamma\gamma$ and $t \gamma j$ as case studies
text, January 2021
- Pagani, Davide; Shao, Hua-Sheng; Tsinikos, Ioannis
- Deutsches Elektronen-Synchrotron, DESY, Hamburg
Right-handed charged currents in the era of the Large Hadron Collider
text, January 2017
- Alioli, S.; Cirigliano, V.; Dekens, W.
- arXiv
Measurement of the semileptonic tt-bar gamma production cross section in pp collisions at sqrt(s) = 8 TeV
text, January 2017
- Collaboration, Cms
- arXiv
Global and optimal probes for the top-quark effective field theory at future lepton colliders
text, January 2018
- Durieux, Gauthier; Perelló, Martín; Vos, Marcel
- arXiv
New Physics from High Energy Tops
text, January 2018
- Farina, Marco; Mondino, Cristina; Pappadopulo, Duccio
- arXiv
The electro-weak couplings of the top and bottom quarks -- global fit and future prospects
text, January 2019
- Durieux, Gauthier; Irles, Adrian; Miralles, Víctor
- arXiv
Electroweak Loops as a Probe of New Physics in $t\bar{t}$ Production at the LHC
text, January 2019
- Martini, Till; Schulze, Markus
- arXiv