An updated review of the new hadron states

HX Chen, W Chen, X Liu, YR Liu… - Reports on Progress in …, 2022 - iopscience.iop.org
The past decades witnessed the golden era of hadron physics. Many excited open heavy
flavor mesons and baryons have been observed since 2017. We shall provide an updated …

Electron-ion collider in China

DP Anderle, V Bertone, X Cao, L Chang, N Chang… - Frontiers of …, 2021 - Springer
Lepton scattering is an established ideal tool for studying inner structure of small particles
such as nucleons as well as nuclei. As a future high energy nuclear physics project, an …

Review of particle physics

Particle Data Group, RL Workman… - … of theoretical and …, 2022 - academic.oup.com
The Review summarizes much of particle physics and cosmology. Using data from previous
editions, plus 2,143 new measurements from 709 papers, we list, evaluate, and average …

Observation of an exotic narrow doubly charmed tetraquark

Nature Physics, 2022 - nature.com
Conventional, hadronic matter consists of baryons and mesons made of three quarks and a
quark–antiquark pair, respectively,. Here, we report the observation of a hadronic state …

Study of the doubly charmed tetraquark

Nature Communications, 2022 - nature.com
Quantum chromodynamics, the theory of the strong force, describes interactions of coloured
quarks and gluons and the formation of hadronic matter. Conventional hadronic matter …

The XYZ states: experimental and theoretical status and perspectives

N Brambilla, S Eidelman, C Hanhart, A Nefediev… - Physics reports, 2020 - Elsevier
The quark model was formulated in 1964 to classify mesons as bound states made of a
quark–antiquark pair, and baryons as bound states made of three quarks. For a long time all …

Observation of a Resonance Consistent with a Strange Pentaquark Candidate in Decays

R Aaij, ASW Abdelmotteleb, C Abellan Beteta… - Physical review …, 2023 - APS
An amplitude analysis of B-→ J/ψ Λ p¯ decays is performed using 4400 signal candidates
selected on a data sample of pp collisions recorded at center-of-mass energies of 7, 8, and …

Observation of structure in the J/ψ-pair mass spectrum

LHCb Collaboration - Science bulletin, 2020 - Elsevier
Using proton-proton collision data at centre-of-mass energies of s= 7, 8 and 13 TeV
recorded by the LHCb experiment at the Large Hadron Collider, corresponding to an …

A survey of heavy–heavy hadronic molecules

XK Dong, FK Guo, BS Zou - Communications in Theoretical …, 2021 - iopscience.iop.org
The spectrum of hadronic molecules composed of heavy–antiheavy charmed hadrons has
been obtained in our previous work. The potentials are constants at the leading order, which …

Evidence of a structure and observation of excited states in the decay

R Aaij, CA Beteta, T Ackernley, B Adeva… - arxiv preprint arxiv …, 2020 - arxiv.org
First evidence of a structure in the $ J/\psi\varLambda $ invariant mass distribution is
obtained from an amplitude analysis of $\var**_b^-\to J/\psi\varLambda K^-$ decays. The …