NLO predictions for the production of a spin-two particle at the LHC
Abstract
We obtain predictions accurate at the next-to-leading order in QCD for the production of a generic spin-two particle in the most relevant channels at the LHC: production in association with coloured particles (inclusive, one jet, two jets and $$t\bar t$$), with vector bosons ($$Z,W^\pm,\gamma$$) and with the Higgs boson. Here, we present total and differential cross sections as well as branching ratios as a function of the mass and the collision energy also considering the case of non-universal couplings to standard model particles. We find that the next-to-leading order corrections give rise to sizeable $K$ factors for many channels, in some cases exposing the unitarity-violating behaviour of non-universal couplings scenarios, and in general greatly reduce the theoretical uncertainties. Our predictions are publicly available in the MadGraph5_aMC@NLO framework and can, therefore, be directly used in experimental simulations of spin-two particle production for arbitrary values of the mass and couplings.
- Authors:
-
[1];
[5]
- Saha Inst. of Nuclear Physics, Kolkata (India). Theory Division
- Durham Univ. (United Kingdom). Inst. for Particle Physics Phenomenology, Dept. of Physics
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Univ. Catholique de Louvain (Belgium). Centre for Cosmology, Particle Physics and Phenomenology (CP3)
- European Organization for Nuclear Research (CERN), Geneva (Switzerland). Theoretical Physics Dept.
- Publication Date:
- Research Org.:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1373119
- Grant/Contract Number:
- 291377; PITN-GA-2012-315877; PBELP2 146525; AC02-76SF00515
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physics Letters B
- Additional Journal Information:
- Journal Volume: 770; Journal Issue: C; Journal ID: ISSN 0370-2693
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; LHC; Spin-two; QCD
Citation Formats
Das, Goutam, Degrande, Céline, Hirschi, Valentin, Maltoni, Fabio, and Shao, Hua-Sheng. NLO predictions for the production of a spin-two particle at the LHC. United States: N. p., 2017.
Web. doi:10.1016/j.physletb.2017.05.007.
Das, Goutam, Degrande, Céline, Hirschi, Valentin, Maltoni, Fabio, & Shao, Hua-Sheng. NLO predictions for the production of a spin-two particle at the LHC. United States. doi:10.1016/j.physletb.2017.05.007.
Das, Goutam, Degrande, Céline, Hirschi, Valentin, Maltoni, Fabio, and Shao, Hua-Sheng. Mon .
"NLO predictions for the production of a spin-two particle at the LHC". United States. doi:10.1016/j.physletb.2017.05.007. https://www.osti.gov/servlets/purl/1373119.
@article{osti_1373119,
title = {NLO predictions for the production of a spin-two particle at the LHC},
author = {Das, Goutam and Degrande, Céline and Hirschi, Valentin and Maltoni, Fabio and Shao, Hua-Sheng},
abstractNote = {We obtain predictions accurate at the next-to-leading order in QCD for the production of a generic spin-two particle in the most relevant channels at the LHC: production in association with coloured particles (inclusive, one jet, two jets and $t\bar t$), with vector bosons ($Z,W^\pm,\gamma$) and with the Higgs boson. Here, we present total and differential cross sections as well as branching ratios as a function of the mass and the collision energy also considering the case of non-universal couplings to standard model particles. We find that the next-to-leading order corrections give rise to sizeable $K$ factors for many channels, in some cases exposing the unitarity-violating behaviour of non-universal couplings scenarios, and in general greatly reduce the theoretical uncertainties. Our predictions are publicly available in the MadGraph5_aMC@NLO framework and can, therefore, be directly used in experimental simulations of spin-two particle production for arbitrary values of the mass and couplings.},
doi = {10.1016/j.physletb.2017.05.007},
journal = {Physics Letters B},
number = C,
volume = 770,
place = {United States},
year = {2017},
month = {5}
}
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