2025/03/19 by Kaikai Zhang, Zhang, Kai-Kai, Wen-Xuan Zhang +3
Chemistry · Materials Science · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Inorganic Chemistry and Materials #Iron-based superconductors research #Rare-earth and actinide compounds
paper · pdf · doi:10.48550/arxiv.2503.14987
openalex publication_date 2025/03/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Masses, magnetic moments and color-spin structures of nonstrange and strange tetraquarks with two heavy quarks are systematically studied in QCD string picture with chromomagnetic interaction. Our mass computations combined with weak and radiative decays indicate that there are two doubly-heavy tetraquarks, the bottom-charmed tetraquark Tcb(7173,01+)0 and the doubly-bottom tetraquark Tbb(10406,01+)-, to be stable against the strong decay, having the lifetimes of 0.069 fs and 326 fs, respectively. Magnetic moments are also computed and found to be sensitive to chromomagnetic mixing of the color-spin configurations of these tetraquarks, being valuable probe to experimentally detect the nontrivial color configuration 6c⊗6c.