Production of heavy Higgs bosons and decay into top quarks at the LHC. II: top-quark polarization and spin correlation effects

Bernreuther, W., Galler, P. , Si, Z.-G. and Uwer, P. (2017) Production of heavy Higgs bosons and decay into top quarks at the LHC. II: top-quark polarization and spin correlation effects. Physical Review D, 95(9), 095012. (doi:10.1103/PhysRevD.95.095012)

Bernreuther, W., Galler, P. , Si, Z.-G. and Uwer, P. (2017) Production of heavy Higgs bosons and decay into top quarks at the LHC. II: top-quark polarization and spin correlation effects. Physical Review D, 95(9), 095012. (doi:10.1103/PhysRevD.95.095012)

[img]
Preview
Text
154642.pdf - Accepted Version

1MB

Abstract

We analyze, within several parameter scenarios of type-II two-Higgs doublet extensions of the standard model, the impact of heavy neutral Higgs-boson resonances on top-quark pair production and their subsequent decay to dileptonic final states at the LHC (13 TeV). In particular, we investigate the effects of heavy Higgs bosons on top-spin observables, that is, the longitudinal top-quark polarization and top-quark spin correlations. We take into account NLO QCD as well as weak interaction corrections and show that top-spin observables, if evaluated in judiciously chosen top-quark pair invariant mass bins, can significantly enhance the sensitivity to heavy Higgs resonances in top-quark pair events.

Item Type:Articles
Additional Information:P. G. was supported by Deutsche Forschungsgemeinschaft through Graduiertenkolleg Grant No. GRK 1504. The work of Z.-G. Si was supported by National Natural Science Foundation of China and by Natural Science Foundation of Shandong Province.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Galler, Dr Peter
Authors: Bernreuther, W., Galler, P., Si, Z.-G., and Uwer, P.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > School of Physics and Astronomy
Research Group:Particle Physics Theory
Journal Name:Physical Review D
Journal Abbr.:PRD
Publisher:American Physical Society
ISSN:1550-7998
ISSN (Online):1550-2368
Published Online:17 May 2017
Copyright Holders:Copyright © 2017 American Physical Society
First Published:First published in Physical Review D 95(9): 095012
Publisher Policy:Reproduced in accordance with the publisher copyright policy
Related URLs:

University Staff: Request a correction | Enlighten Editors: Update this record