2011/02/28 by Wen-Chen Chang, W. C. Chang, Jen-Chieh Peng · 2 citations
Medicine · Physics and Astronomy · #Asymmetry #Flavor #High-Energy Particle Collisions Research #Medicine #Nuclear physics #Nucleon #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quark #hep-ph #nucl-ex #nucl-th
paper · pdf · doi:10.1103/physrevlett.106.252002
published as Phys.Rev.Lett.106:252002,2011 · 4 pages, 3 figures
arxiv created 2011/05/30 · openalex publication_date 2011/06/22 · arxiv updated 2011/07/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The existence of the five-quark Fock states for the intrinsic charm quark in the nucleons was suggested some time ago, but conclusive evidence is still lacking. We generalize the previous theoretical approach to the light-quark sector and study possible experimental signatures for such five-quark states. In particular, we compare the d-ū and ū + d-s-s data with the calculations based on the five-quark Fock states. The qualitative agreement between the data and the calculations is interpreted as evidence for the existence of the intrinsic light-quark sea in the nucleons. The probabilities for the |uuduū and |uuddd Fock states are also extracted.