Using asymmetry observables to discover and distinguish Z' signals in top pair production with the lepton-plus-jets final state at the LHC
Using asymmetry observables to discover and distinguish Z' signals in top pair production with the lepton-plus-jets final state at the LHC
We study the sensitivity of top pair production with six-fermion decay at the LHC to the presence and nature of an underlying Z' boson, accounting for full tree-level Standard Model ttbar interference, with all intermediate particles allowed off-shell. We concentrate on the lepton-plus-jets final state and simulate experimental conditions, including kinematic requirements and top quark pair reconstruction in the presence of missing transverse energy and combinatorial ambiguity in jet-top assignment. We focus on the differential mass spectra of the cross section and asymmetry observables, especially demonstrating the use of the latter in probing the coupling structure of a new neutral resonance, in addition to cases in which the asymmetry forms a complementary discovery observable.
hep-ph
Cerrito, Lucio
1b1392ba-721f-4c1c-a770-762842d99085
Millar, Declan
8c08f8d5-6d69-4e60-851d-41c6dfc0d4c6
Moretti, Stefano
b57cf0f0-4bc3-4e02-96e3-071255366614
Spanò, Francesco
a37b739b-5bb1-454d-8e8a-6a7dc2bbcf7b
27 March 2017
Cerrito, Lucio
1b1392ba-721f-4c1c-a770-762842d99085
Millar, Declan
8c08f8d5-6d69-4e60-851d-41c6dfc0d4c6
Moretti, Stefano
b57cf0f0-4bc3-4e02-96e3-071255366614
Spanò, Francesco
a37b739b-5bb1-454d-8e8a-6a7dc2bbcf7b
Cerrito, Lucio, Millar, Declan, Moretti, Stefano and Spanò, Francesco
(2017)
Using asymmetry observables to discover and distinguish Z' signals in top pair production with the lepton-plus-jets final state at the LHC.
Proceedings of Science, LHCP2016, [239].
Abstract
We study the sensitivity of top pair production with six-fermion decay at the LHC to the presence and nature of an underlying Z' boson, accounting for full tree-level Standard Model ttbar interference, with all intermediate particles allowed off-shell. We concentrate on the lepton-plus-jets final state and simulate experimental conditions, including kinematic requirements and top quark pair reconstruction in the presence of missing transverse energy and combinatorial ambiguity in jet-top assignment. We focus on the differential mass spectra of the cross section and asymmetry observables, especially demonstrating the use of the latter in probing the coupling structure of a new neutral resonance, in addition to cases in which the asymmetry forms a complementary discovery observable.
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e-pub ahead of print date: 12 October 2016
Published date: 27 March 2017
Additional Information:
4 pages, proceedings contribution for Fourth Annual Large Hadron Collider Physics, 13-18 June 2016, Lund, Sweden
Keywords:
hep-ph
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Theory Group
Identifiers
Local EPrints ID: 411794
URI: http://eprints.soton.ac.uk/id/eprint/411794
PURE UUID: 8a88bc98-530d-4710-866c-927f3942640c
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Date deposited: 26 Jun 2017 16:30
Last modified: 16 Mar 2024 03:34
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Contributors
Author:
Lucio Cerrito
Author:
Declan Millar
Author:
Francesco Spanò
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