%0 Conference Proceedings
%T Heavy-Light Exotics from QCD Laplace Sum Rules at N2LO in the chiral limit
%+ Laboratoire Univers et Particules de Montpellier (LUPM)
%A Albuquerque, R. M
%A Narison, S.
%A Fanomezana, F.
%A Rabemananjara, A.
%A Rabetiarivony, D.
%A Randriamanatrika, G.
%< sans comité de lecture
%( Nucl.Part.Phys.Proc.
%B 19th High-Energy Physics International Conference in Quantum Chromodynamics
%C Montpellier, France
%V 282-284
%P 83-91
%8 2016-07-04
%D 2016
%Z 1612.03438
%R 10.1016/j.nuclphysbps.2016.12.016
%K Perturbative and Non-perturbative QCD
%K QCD spectral sum rules
%K Exotic hadrons
%K Masses and Decay constants
%K quantum chromodynamics: sum rule
%K sum rule: Laplace
%K sum rule: spectral
%K quantum chromodynamics: perturbation theory: higher-order
%K higher-order: 2
%K perturbation theory: chiral
%K X(5568)
%K bottom meson: mass
%K bottom meson: decay constant
%Z Physics [physics]/High Energy Physics - Phenomenology [hep-ph]
%Z Physics [physics]/High Energy Physics - Experiment [hep-ex]
%Z Physics [physics]/High Energy Physics - Lattice [hep-lat]Conference papers
%X These talks review and summarize our results in [1, 2] on XYZ -like spectra obtained from QCD Laplace Sum Rule in the chiral limit at next-to-next-leading order (N2LO) of perturbation theory (PT) and including leading order (LO) contributions of dimensions d≤6−8 non-perturbative condensates. We conclude that the observed XZ states are good candidates for 1+ and 0+ molecules or / and four-quark states while the predictions for 1− and 0− states are about 1.5 GeV above the Yc,b experimental candidates and hadronic thresholds. We (numerically) find that these exotic molecules couple weakly to the corresponding interpolating currents than ordinary D , B heavy-light mesons while we observe that these couplings decrease faster [ 1/mb3/2 (resp. 1/mb ) for the 1+ , 0+ (resp. 1− , 0− ) states] than 1/mb1/2 . results do not also confirm the existence of the X (5568) state in agreement with LHCb findings.
%G English
%L hal-01554520
%U https://hal.science/hal-01554520
%~ IN2P3
%~ CNRS
%~ LUPM
%~ FRANCE-GRILLES
%~ UNIV-MONTPELLIER
%~ LUPM_IFAC
%~ UM-2015-2021