Possible Evidence for the Gluon Condensation Effect in Cosmic Positron and Gamma-Ray Spectra

2019/12/30 by Wei Zhu, Peng Liu, Jianhong Ruan +1
Physics and Astronomy · #Antiproton #Astronomy #Astrophysics #Astrophysics and Cosmic Phenomena #Condensation #Cosmic ray #Dark Matter and Cosmic Phenomena #Electron #Nuclear physics #Particle physics theoretical and experimental studies #Physics #Positron #Proton #Spectral line #Spectrometer #Supernova #astro-ph.HE #hep-ph #nucl-th

paper · pdf · doi:10.3847/1538-4357/ab6214

published as ApJ, 889, 127 (2020) · 4 pages, 4 figures, Accepted for publication in the ApJ

arxiv created 2019/12/30 · openalex publication_date 2020/01/30 · arxiv updated 2020/02/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Abstract The gluon condensation (GC) effect in cosmic proton–proton collisions at high energy is used to explain an excess in the positron spectrum observed by the Alpha Magnetic Spectrometer. We find that this excess may originate from the GC effect in Tycho's supernova remnant.

Citations

• Can a Chaotic Solution in the QCD Evolution Equation Restrain High-Energy Collider Physics?
• First Result from the Alpha Magnetic Spectrometer on the International Space Station: Precision Measurement of the Positron Fraction in Primary Cosmic Rays of 0.5–350 GeV
• Centrality, rapidity, and transverse momentum dependence of isolated prompt photon production in lead-lead collisions atsNN=2.76TeV measured with the ATLAS detector
• The gluon condensation at high energy hadron collisions