四夸克粒子量子特性首次揭示

Core Insights - The latest research from the CMS collaboration at CERN's LHC reveals the quantum properties of tetraquark particles, providing new insights into the nature of strong nuclear force [1][2] Group 1: Quantum Properties of Tetraquarks - The CMS collaboration focused on three tetraquark particles composed of two charm quarks and two anti-charm quarks: X(6600), X(6900), and X(7100) [1] - The team measured three key quantum parameters: spin (intrinsic angular momentum), parity (mirror symmetry), and charge conjugation symmetry (impact of particle-antiparticle interchange) [1][2] - All three tetraquark states were found to have a spin of 2, with both parity and charge conjugation symmetry equal to 1, indicating they are likely tightly bound "tetraquark states" rather than loosely bound hadron pairs [2] Group 2: Implications for Strong Nuclear Force Research - The all-charm quark combination provides a clearer theoretical platform for studying strong nuclear force, one of the four fundamental forces in nature responsible for binding quarks into protons and neutrons [2] - Although the current results do not fully clarify the internal structure of exotic hadrons, they provide critical evidence for the "tetraquark state" model [2] - The ongoing third run of the LHC and the future "High-Luminosity LHC" are expected to generate richer data, potentially revealing how strong nuclear force shapes diverse quark combinations and deepening understanding of the fundamental structure of matter [2]