Heavy-hadron molecules from light-meson-exchange saturation
| العنوان: | Heavy-hadron molecules from light-meson-exchange saturation |
|---|---|
| المؤلفون: | Manuel Pavon Valderrama, Mario Sánchez Sánchez, Fang-Zheng Peng, Ming-Zhu Liu |
| المساهمون: | Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) |
| المصدر: | Phys.Rev.D Phys.Rev.D, 2020, 102, pp.114020. ⟨10.1103/PhysRevD.102.114020⟩ Physical Review |
| بيانات النشر: | American Physical Society (APS), 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Particle physics, Nuclear Theory, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], Meson, Hadron, FOS: Physical sciences, heavy quark: symmetry, meson, spin: high, 01 natural sciences, Resonance (particle physics), Omega, High Energy Physics - Experiment, Nuclear Theory (nucl-th), potential: short-range, High Energy Physics - Experiment (hep-ex), X(3872), isospin, High Energy Physics - Phenomenology (hep-ph), High Energy Physics - Lattice, effective field theory, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Effective field theory, structure, resonance: saturation, Nuclear Experiment, 010306 general physics, Spin-½, form factor, Physics, Spins, [PHYS.HLAT]Physics [physics]/High Energy Physics - Lattice [hep-lat], 010308 nuclear & particles physics, High Energy Physics - Lattice (hep-lat), High Energy Physics::Phenomenology, vector meson, 3. Good health, High Energy Physics - Phenomenology, long-range, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], Isospin, hadron: heavy |
| الوصف: | In the effective field theory framework the interaction between two heavy hadrons can be decomposed into a long- and a short-range piece. The long-range piece corresponds to the one-pion-exchange potential and is relatively well-known. The short-range piece is given by a series of contact-range interactions with unknown couplings, which substitute the less well-known short-range dynamics. While the general structure of the short-range potential between heavy hadrons is heavily constrained from heavy-quark symmetry, the couplings are still free parameters. Here we argue that the relative strength and the sign of these couplings can be estimated from the hypothesis that they are saturated by the exchange of light mesons, in particular the vector mesons $\rho$ and $\omega$, i.e. from resonance saturation. However, we propose a novel saturation procedure that effectively removes form-factor artifacts. From this we can determine in which spin and isospin configurations the low-energy constants are most attractive for specific two-heavy-hadron systems. In general the molecular states with lower isospins and higher spins will be more attractive and thus more probable candidates to form heavy-hadron molecules. This pattern is compatible with the interpretation of the $X(3872)$ and $P_c(4312/4440/4457)$ as molecular states, but it is not applicable to states with maximum isospin like the $Z_c(3900/4020)$. Comment: 8 pages, 1 figure, 1 table, corresponds to published version |
| تدمد: | 2470-0029 2470-0010 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ced31027d6c8f1ca23a8b279c366d543 https://doi.org/10.1103/physrevd.102.114020 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....ced31027d6c8f1ca23a8b279c366d543 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 24700029 24700010 |
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