Quark-gluon tagging with shower deconstruction: Unearthing dark matter and Higgs couplings
Abstract
The separation of quark and gluon initiated jets can be an important way to improve the sensitivity in searches for new physics or in measurements of Higgs boson properties. We present a simplified version of the shower deconstruction approach as a novel observable for quark-gluon tagging. Assuming topoclusterlike objects as input, we compare our observable with energy correlation functions and find a favorable performance for a large variety of jet definitions. We address the issue of infrared sensitivity of quark-gluon discrimination. When this approach is applied to dark matter searches in monojet final states, limitations from small signal-to-background ratios can be overcome. We also show that quark-gluon tagging is an alternative way of separating weak boson from gluon-fusion production in the process p+p→H+jet+jet+X.
- Authors:
-
- Ruprechts-Karls-Univ. Heidelberg, Heidelberg (Germany). Physikalisches Inst.
- Durham Univ. (United Kingdom). Inst. for Particle Physics Phenomenology
- Univ. of Oregon, Eugene, OR (United States)
- Publication Date:
- Research Org.:
- Univ. of Oregon, Eugene, OR (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP); European Commission (EC); Alexander von Humboldt Foundation
- OSTI Identifier:
- 1601464
- Alternate Identifier(s):
- OSTI ID: 1342448
- Grant/Contract Number:
- SC0011640
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review D
- Additional Journal Information:
- Journal Volume: 95; Journal Issue: 3; Journal ID: ISSN 2470-0010
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Astronomy & Astrophysics; Physics
Citation Formats
Ferreira de Lima, Danilo, Petrov, Petar, Soper, Davison, and Spannowsky, Michael. Quark-gluon tagging with shower deconstruction: Unearthing dark matter and Higgs couplings. United States: N. p., 2017.
Web. doi:10.1103/PhysRevD.95.034001.
Ferreira de Lima, Danilo, Petrov, Petar, Soper, Davison, & Spannowsky, Michael. Quark-gluon tagging with shower deconstruction: Unearthing dark matter and Higgs couplings. United States. https://doi.org/10.1103/PhysRevD.95.034001
Ferreira de Lima, Danilo, Petrov, Petar, Soper, Davison, and Spannowsky, Michael. Wed .
"Quark-gluon tagging with shower deconstruction: Unearthing dark matter and Higgs couplings". United States. https://doi.org/10.1103/PhysRevD.95.034001. https://www.osti.gov/servlets/purl/1601464.
@article{osti_1601464,
title = {Quark-gluon tagging with shower deconstruction: Unearthing dark matter and Higgs couplings},
author = {Ferreira de Lima, Danilo and Petrov, Petar and Soper, Davison and Spannowsky, Michael},
abstractNote = {The separation of quark and gluon initiated jets can be an important way to improve the sensitivity in searches for new physics or in measurements of Higgs boson properties. We present a simplified version of the shower deconstruction approach as a novel observable for quark-gluon tagging. Assuming topoclusterlike objects as input, we compare our observable with energy correlation functions and find a favorable performance for a large variety of jet definitions. We address the issue of infrared sensitivity of quark-gluon discrimination. When this approach is applied to dark matter searches in monojet final states, limitations from small signal-to-background ratios can be overcome. We also show that quark-gluon tagging is an alternative way of separating weak boson from gluon-fusion production in the process p+p→H+jet+jet+X.},
doi = {10.1103/PhysRevD.95.034001},
journal = {Physical Review D},
number = 3,
volume = 95,
place = {United States},
year = {Wed Feb 01 00:00:00 EST 2017},
month = {Wed Feb 01 00:00:00 EST 2017}
}
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