2016/03/23 by Xiaohui Liu, Hong Zhang, Liu, Xiaohui +1 · 2 citations
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #hep-ex #hep-ph
paper · pdf · doi:10.48550/arxiv.1603.07190
9 pages, 2 figures
arxiv created 2016/03/23 · openalex publication_date 2016/03/23 · arxiv updated 2016/03/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We present a renormalization-group (RG) improved prediction for 750 GeV heavy state production recently seen as the diphoton excess at the LHC. Due to the universality of QCD feature in the threshold region, our result provides reasonable estimate of the K-factor for most existing leading order predictions, independent of the specific nature of the resonance. We consider specifically the spin-2 warped Kaluza-Klein graviton model to highlight our calculation. We performed soft gluon resummation near threshold at next-to-next-to-leading logarithmic (NNLL) accuracy together with resumming enhanced corrections from a towers of π2 due to analytic continuation. We find the resummation effects are significant. When matching our resummed result to next-to-leading order calculation, we find our improved predictions exceed the leading fixed-order results by about 56% (K=1.56) for the LHC energies at 13 TeV and 14 TeV, and about 63% (K=1.63) for 8 TeV.