Structure of open-flavor four-quark states in the charm and bottom region

Hoffer, Joshua; Eichmann, Gernot; Fischer, Christian S.

doi:10.1103/PhysRevD.111.054028

Structure of open-flavor four-quark states in the charm and bottom region

Journal Article · Mon Mar 24 00:00:00 EDT 2025 · Physical Review. D.

DOI:https://doi.org/10.1103/PhysRevD.111.054028· OSTI ID:2537957

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We present quantitative results for masses and the internal structure of four-quark states with two heavy quarks, i.e., $Q Q^{'} \bar{q} {\bar{q}}^{'}$ with $Q, Q^{'} \in {c, b}$ and $q, q^{'} \in {u, d, s}$ , and $J^{P} \in 1^{+}$ . The composition of these states in terms of meson-meson and diquark-antidiquark pairs, extracted from a relativistic four-body Faddeev-Yakubowski equation, is dynamically determined from underlying QCD forces. We find states at energy levels in very good agreement with lattice QCD and, where available, with experimental states. Their internal structure, most notably between the $T_{c c}^{+}$ , $T_{b c}$ and $T_{b b}^{-}$ , show significant and sizeable variations.

Published by the American Physical Society 2025

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Sponsoring Organization:: USDOE

Grant/Contract Number:: SC0023598

OSTI ID:: 2537957

Journal Information:: Physical Review. D., Journal Name: Physical Review. D. Journal Issue: 5 Vol. 111; ISSN PRVDAQ; ISSN 2470-0010

Publisher:: American Physical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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