2008/10/22 by Xing-Gang Wu, Zhen-Yun Fang · 1 citation
Physics and Astronomy · #Black Holes and Theoretical Physics #Energy (signal processing) #Gravitation #Graviton #Hadron #Large Hadron Collider #Large extra dimension #Noncommutative and Quantum Gravity Theories #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Production (economics) #Quantum #Quantum gravity #Quantum mechanics #hep-ph
paper · pdf · doi:10.1103/physrevd.78.094002
published as Phys.Rev.D78:094002,2008 · 14 pages, 4 figures, 3 tables. References added. To be published in Phys.Rev.D
arxiv created 2008/10/22 · openalex publication_date 2008/11/03 · arxiv updated 2010/04/23 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
CERN LHC provides a good experimental platform to perturbatively probe the fundamental gravity scale up to several TeV, with the precise value depending on the number of extra dimensions. The leading experimental signal of the graviton at the LHC is from the process pp\ensuremath→jet+\mathrmE\ensuremath\llap\not T, where \mathrmE\ensuremath\llap\not T stands for the transverse missing energy. A detailed discussion on the hadronic production of the real graviton through hard subprocesses: qq\ensuremath→G+g, g+q\ensuremath→G+q, and g+g\ensuremath→G+g have been studied within the quantum gravity theory with large extra dimensions. The main theoretical uncertainties together with the dominant standard model background to these processes, e.g. qq\ensuremath→Z0+g and g+q\ensuremath→Z0+q with Z0 further decaying into neutrinos, have also been discussed. It is found that only in a certain jet energy region and with a certain number of extra dimensions can the quantum gravity signal be distinguished from the background, which inversely lead to the effective scale MD to be probed up to (8.8\ifmmode±\else\textpm\fi0.9) TeV for two extra dimensions and (5.9\ifmmode±\else\textpm\fi0.5) TeV for four extra dimensions with sufficient integrated luminosity, e.g. 100 fb^\ensuremath-1, at CERN LHC.