2016/12/12 by A. V. Lipatov, M. A. Malyshev · 2 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Gravitation #Graviton #High-Energy Particle Collisions Research #Kaluza–Klein theory #Large Hadron Collider #Mathematical physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Production (economics) #Quantum chromodynamics #Quantum mechanics #hep-ph
paper · pdf · doi:10.1103/physrevd.95.094010
published in Physical review. D/Physical review. D. 95(9) (American Physical Society) · 16 pages, 7 figures
arxiv created 2016/12/12 · openalex created_date 2017/01/06 · openalex publication_date 2017/05/19 · arxiv updated 2017/05/24 · openalex updated_date 2026/08/05
We study the single graviton production at the CERN LHC using the kT-factorization approach of QCD. We consider the Arkani-Hamed-Dimopoulos-Dvali scenario and Randall-Sundrum model with one warped extra dimension and derive the production amplitudes for spin-2 (Kaluza-Klein excitation of the graviton) and spin-0 (radion) states, including subsequent graviton decay into the dilepton or diphoton pairs. We use the transverse momentum dependent (unintegrated) parton densities in a proton obtained from the Ciafaloni-Catani-Fiorani-Marchesini evolution equation, which resums the leading logarithmic small-x corrections to the production cross sections, and estimate the uncertainties of our predictions. We demonstrate that the small-x effects can manifest themselves in the different angular distributions of graviton decay products and give some examples of what these distributions can look like at the LHC energies.