On-shell interference effects in Higgs boson final states
Abstract
Top quark loops in Higgs production via gluon fusion at large invariant final state masses can induce important interference effects in searches for additional Higgs bosons as predicted in, e.g., Higgs portal scenarios and the minimal supersymmetric Standard Model when the heavy scalar is broad or the final state resolution is poor. Currently, the limit setting as performed by both ATLAS and CMS is based on injecting a heavy Higgs-like signal neglecting interference effects. In this study, we perform a study of such “on-shell” interference effects in pp → ZZ and find that they lead to a ≲O(30%) width scheme-dependent modification of the signal strength. Finally, including the continuum contributions to obtain, e.g., the full pp → ZZ → 4l final state, this modification is reduced to the 10% level in the considered intermediate mass range.
- Authors:
-
- Univ. of Glasgow, Scotland (United Kingdom). School of Physics and Astronomy
- Argonne National Lab. (ANL), Argonne, IL (United States). High Energy Physics Division; Northwestern Univ., Evanston, IL (United States). Dept. of Physics and Astronomy
- Durham Univ. (United Kingdom). Dept. of Physics. Inst. for Particle Physics Phenomenology
- Publication Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States); Northwestern Univ., Evanston, IL (United States); Durham Univ. (United Kingdom)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP); European Commission (EC)
- Contributing Org.:
- Univ. of Glasgow, Scotland (United Kingdom)
- OSTI Identifier:
- 1349064
- Alternate Identifier(s):
- OSTI ID: 1180131
- Grant/Contract Number:
- AC02-06CH11357; SC0010143; PITN-GA-2012-316704
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. D, Particles, Fields, Gravitation and Cosmology
- Additional Journal Information:
- Journal Volume: 91; Journal Issue: 7; Journal ID: ISSN 1550-7998
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Englert, Christoph, Low, Ian, and Spannowsky, Michael. On-shell interference effects in Higgs boson final states. United States: N. p., 2015.
Web. doi:10.1103/PhysRevD.91.074029.
Englert, Christoph, Low, Ian, & Spannowsky, Michael. On-shell interference effects in Higgs boson final states. United States. https://doi.org/10.1103/PhysRevD.91.074029
Englert, Christoph, Low, Ian, and Spannowsky, Michael. Wed .
"On-shell interference effects in Higgs boson final states". United States. https://doi.org/10.1103/PhysRevD.91.074029. https://www.osti.gov/servlets/purl/1349064.
@article{osti_1349064,
title = {On-shell interference effects in Higgs boson final states},
author = {Englert, Christoph and Low, Ian and Spannowsky, Michael},
abstractNote = {Top quark loops in Higgs production via gluon fusion at large invariant final state masses can induce important interference effects in searches for additional Higgs bosons as predicted in, e.g., Higgs portal scenarios and the minimal supersymmetric Standard Model when the heavy scalar is broad or the final state resolution is poor. Currently, the limit setting as performed by both ATLAS and CMS is based on injecting a heavy Higgs-like signal neglecting interference effects. In this study, we perform a study of such “on-shell” interference effects in pp → ZZ and find that they lead to a ≲O(30%) width scheme-dependent modification of the signal strength. Finally, including the continuum contributions to obtain, e.g., the full pp → ZZ → 4l final state, this modification is reduced to the 10% level in the considered intermediate mass range.},
doi = {10.1103/PhysRevD.91.074029},
journal = {Physical Review. D, Particles, Fields, Gravitation and Cosmology},
number = 7,
volume = 91,
place = {United States},
year = {Wed Apr 29 00:00:00 EDT 2015},
month = {Wed Apr 29 00:00:00 EDT 2015}
}
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