2002/11/20 by Sean Fleming, Adam K. Leibovich · 2 citations
Mathematics · Physics and Astronomy · #Algorithm #High-Energy Particle Collisions Research #Mathematics #Order (exchange) #Particle physics #Particle physics theoretical and experimental studies #Photon #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Radiative transfer #Spectrum (functional analysis) #hep-ex #hep-ph
paper · pdf · doi:10.1103/physrevlett.90.032001
published as Phys.Rev.Lett. 90 (2003) 032001 · 4 pages, 6 figures
arxiv created 2002/11/20 · openalex publication_date 2003/01/24 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We present a theoretical prediction for the photon spectrum in radiative upsilon decay including the effects of resumming the end point region, E(gamma)-->M(upsilon)/2. Our approach is based on nonrelativistic QCD (NRQCD) and the soft-collinear effective theory. We find that our results give much better agreement with data than the leading order NRQCD prediction.