A large number of experimental discoveries especially in the heavy quarkonium sector that
did not meet the expectations of the until then very successful quark model led to a …

The past seventeen years have witnessed tremendous progress on the experimental and
theoretical explorations of the multiquark states. The hidden-charm and hidden-bottom …

A narrow pentaquark state, P c (4312)+, decaying to J/ψ p, is discovered with a statistical
significance of 7.3 σ in a data sample of Λ b 0→ J/ψ p K-decays, which is an order of …

In the past decade many charmonium-like states were observed experimentally. Especially
those charged charmonium-like Z c states and bottomonium-like Z b states cannot be …

Observations of exotic structures in the J/ψ p channel, which we refer to as charmonium-
pentaquark states, in Λ b 0→ J/ψ Kp decays are presented. The data sample corresponds to …

For many decades after the invention of the quark model in 1964 there was no evidence that
hadrons are formed from anything other than the simplest pairings of quarks and antiquarks …

We study the P cs (4459) 0 recently observed by LHCb using the method of QCD sum rules.
Our results support its interpretation as the D¯∗ Ξ c hadronic molecular state of either JP …

On 26 March 2019, at the Rencontres de Moriond QCD conference, the LHCb Collaboration
reported the observation of three new pentaquarks, namely P c (4312), P c (4440), and P c …

The LHCb Collaboration announced two pentaquark-like structures in the J/ψ p invariant
mass distribution. We show that the current information on the narrow structure at 4.45 GeV …

Abstract Very recently, the LHCb Collaboration reported their new results about the
pentaquarks at charm energy region. Based on the new experimental results, we recalculate …