We present a systematic and self-consistent analysis of four-quark charmonium states and applied it to study compact four-quark systems and meson-meson molecules. Our results are robust and should serve to clarify the situation of charmonium spectroscopy above the threshold production of charmed mesons.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1103/PhysRevLett.103.222001 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Highlights of light meson spectroscopy at the BESIII experiment.
Natl Sci Rev
November 2021
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
Hadron spectroscopy provides a way to understand the dynamics of the strong interaction. For light hadron systems, only phenomenological models or lattice quantum chromodynamics (QCD) are applicable, because of the failure of perturbation expansions for QCD at low energy. Experimental data on light hadron spectroscopy are therefore crucial to provide necessary constraints on various theoretical models.
View Article and Find Full Text PDFEvidence of a J/ψΛ structure and observation of excited Ξ states in the Ξ→J/ψΛK decay.
Sci Bull (Beijing)
July 2021
First evidence of a structure in the J/ψΛ invariant mass distribution is obtained from an amplitude analysis of Ξ→J/ψΛK decays. The observed structure is consistent with being due to a charmonium pentaquark with strangeness with a significance of 3.1σ including systematic uncertainties and look-elsewhere effect.
View Article and Find Full Text PDFObservation of J/ψp Resonances Consistent with Pentaquark States in Λ_{b}^{0}→J/ψK^{-}p Decays.
Phys Rev Lett
August 2015
Sezione INFN di Bologna, Bologna, Italy.
Observations of exotic structures in the J/ψp channel, which we refer to as charmonium-pentaquark states, in Λ_{b}^{0}→J/ψK^{-}p decays are presented. The data sample corresponds to an integrated luminosity of 3 fb^{-1} acquired with the LHCb detector from 7 and 8 TeV pp collisions. An amplitude analysis of the three-body final state reproduces the two-body mass and angular distributions.
View Article and Find Full Text PDFVery broad X(4260) and the resonance parameters of the ψ(3D) vector charmonium state.
Phys Rev Lett
September 2010
Centro de Física Teórica, Departamento de Física, Universidade de Coimbra, P-3004-516 Coimbra, Portugal.
We argue that the X(4260) enhancement contains a wealth of information on 1-- cc spectroscopy. We discuss the shape of the X(4260) observed in the Okubo-Zweig-Iizuka-forbidden process e+e-→π+π-J/ψ, in particular, at and near vector charmonium resonances as well as open-charm threshold enhancements. The resulting very broad X(4260) structure does not seem to classify itself as a 1-- cc resonance, but its detailed shape allows us to identify new vector charmonium states with higher statistics than in open-charm decay.
View Article and Find Full Text PDFX(3915) and X(4350) as new members in the P-wave charmonium family.
Phys Rev Lett
March 2010
School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China.
The analysis of the mass spectrum and the calculation of the strong decay of P-wave charmonium states strongly purport to explain the newly observed X(3915) and X(4350) as new members in the P-wave charmonium family, i.e., chi{c0}{'} for X(3915) and chi{c2}{''} for X(4350).
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!