Doubly hidden 0++ molecules and tetraquarks states from QCD at NLO
| Autor: | Albuquerque, R. M., Narison, S., Rabemananjara, A., Rabetiarivony, D., Randriamanatrika, G. |
|---|---|
| Přispěvatelé: | Laboratoire Univers et Particules de Montpellier (LUPM), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Montpellier 2 - Sciences et Techniques (UM2) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Quark
J/psi(3100) Nuclear and High Energy Physics Particle physics hadron: exotic FOS: Physical sciences 01 natural sciences operator product expansion chi/c1(3510) High Energy Physics - Experiment eta/b Perturbative and Non-perturbative QCD High Energy Physics - Experiment (hep-ex) High Energy Physics - Phenomenology (hep-ph) 0103 physical sciences quantum chromodynamics radiative correction [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] heavy quark Operator product expansion structure 010306 general physics ground state: mass sum rule: Laplace perturbation theory Quantum chromodynamics Physics molecule 010308 nuclear & particles physics Exotic hadrons higher-order: 1 Order (ring theory) State (functional analysis) Exotic hadron tetraquark stability High Energy Physics - Phenomenology [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph] Tetraquark Sum rule in quantum mechanics Masses and Decay constants spectral representation Upsilon(9460) QCD Spectral Sum Rules |
| Zdroj: | Nucl.Part.Phys.Proc. 23rd High-Energy Physics International Conference in Quantum Chromodynamics 23rd High-Energy Physics International Conference in Quantum Chromodynamics, Oct 2020, Montpellier, France. pp.15289, ⟨10.1016/j.nuclphysbps.2021.05.031⟩ |
| DOI: | 10.1016/j.nuclphysbps.2021.05.031⟩ |
| Popis: | Motivated by the LHCb-group discovery of exotic hadrons in the range (6.2 $\sim$ 6.9) GeV, we present new results for the masses and couplings of $0^{++}$ fully heavy $(\bar{Q}Q)(Q\bar{Q})$ molecules and $(QQ)(\overline{QQ})$ tetraquaks states from relativistic QCD Laplace Sum Rule (LSR) within stability criteria where Next-to-Leading Order (NLO) Factorized (F) Perturbative (PT) corrections is included. As the Operator Product Expansion (OPE) usually converges for $d\leqslant 6-8$, we evaluated the QCD spectral functions at Lowest Order (LO) of PT QCD and up to $\langle G^3 \rangle$. We also emphasize the importance of PT radiative corrections for heavy quark sum rules in order to justify the use of the running heavy quark mass value in the analysis. We compare our predictions in Table 3 with the ones from ratio of Moments (MOM). The broad structure arround (6.2 $\sim$ 6.9) GeV can be described by the $\overline{\eta}_c\eta_c$, $\overline{J/\psi}J/\psi$ and $\overline{\chi}_{c1}\chi_{c1}$ molecules or/and $\overline{S}_c S_c$, $\overline{A}_c A_c$ and $\overline{V}_c V_c$ tetraquarks lowest mass ground states. The narrow structure at (6.8 $\sim$ 6.9) GeV if it is a $0^{++}$ state can be a $\overline{\chi}_{c0}\chi_{c0}$ molecules or/and its analogue $\overline{P}_c P_c$ tetraquark. The $\overline{\chi}_{c1}\chi_{c1}$ predicted mass is found to be below the $\chi_{c1}\chi_{c1}$ threshold while for the beauty states, all of the estimated masses are above the $\eta_b \eta_b$ and $\Upsilon(1S)\Upsilon(1S)$ threshold. Comment: Talk given at 23th High Energy Physics International Conference in Quantum Chromodynamics (QCD20), 27-30 October 2020, Montpellier-FR |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|