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Title: 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:
ORCiD logo [1];  [2];  [3];  [4]; ORCiD logo [5]
  1. Saha Inst. of Nuclear Physics, Kolkata (India). Theory Division
  2. Durham Univ. (United Kingdom). Inst. for Particle Physics Phenomenology, Dept. of Physics
  3. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  4. Univ. Catholique de Louvain (Belgium). Centre for Cosmology, Particle Physics and Phenomenology (CP3)
  5. European Organization for Nuclear Research (CERN), Geneva (Switzerland). Theoretical Physics Dept.
Publication Date:
Research Org.:
SLAC National Accelerator Laboratory (SLAC), 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. https://doi.org/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. https://doi.org/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 = {Mon May 08 00:00:00 EDT 2017},
month = {Mon May 08 00:00:00 EDT 2017}
}

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