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 …

Pentaquark and tetraquark states

YR Liu, HX Chen, W Chen, X Liu, SL Zhu - Progress in Particle and …, 2019 - Elsevier
The past seventeen years have witnessed tremendous progress on the experimental and
theoretical explorations of the multiquark states. The hidden-charm and hidden-bottom …

The hidden-charm pentaquark and tetraquark states

HX Chen, W Chen, X Liu, SL Zhu - Physics Reports, 2016 - Elsevier
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 …

Threshold cusps and triangle singularities in hadronic reactions

FK Guo, XH Liu, S Sakai - Progress in Particle and Nuclear Physics, 2020 - Elsevier
The spectrum of hadrons is the manifestation of color confinement of quantum
chromodynamics. Hadronic resonances correspond to poles of the S-matrix. Since 2003 …

A review of the open charm and open bottom systems

HX Chen, W Chen, X Liu, YR Liu… - Reports on Progress in …, 2017 - iopscience.iop.org
Since the discovery of the first charmed meson in 1976, many open-charm and open-bottom
hadrons were observed. In 2003 two narrow charm-strange states $ D_ {s0}^{\ast}(2317) …

Four-quark exotic mesons

S Agaev, K Azizi, HS PAMUK - Turkish Journal of Physics, 2020 - journals.tubitak.gov.tr
We review our investigations devoted to the analysis of the resonances Zc (3900), Zc (4430),
Zc (4100), X (4140), X (4274), α1 (1420), Y (4660), X (2100), X (2239), and Y (2175) …

Light isovector resonances in at

M Aghasyan, MG Alexeev, GD Alexeev, A Amoroso… - Physical Review D, 2018 - APS
We have performed the most comprehensive resonance-model fit of π-π-π+ states using the
results of our previously published partial-wave analysis (PWA) of a large data set of …

Light-meson spectroscopy with COMPASS

B Ketzer, B Grube, D Ryabchikov - Progress in Particle and Nuclear …, 2020 - Elsevier
Despite decades of research, we still lack a detailed quantitative understanding of the way
quantum chromodynamics (QCD) generates the spectrum of hadrons. Precise experimental …

Letter of Intent: A New QCD facility at the M2 beam line of the CERN SPS (COMPASS++/AMBER)

B Adams, CA Aidala, R Akhunzyanov… - arxiv preprint arxiv …, 2018 - arxiv.org
arxiv:1808.00848v6 [hep-ex] 25 Jan 2019 Page 1 EUROPEAN ORGANIZATION FOR
NUCLEAR RESEARCH CERN-SPSC-2019–003 SPSC-I-250 January 28, 2019 Letter of Intent …

Decoding the as a Fully Open-Flavor Tetraquark State

W Chen, HX Chen, X Liu, TG Steele, SL Zhu - Physical Review Letters, 2016 - APS
We investigate the recent evidence for a charged X (5568) meson as an exotic open-flavor
tetraquark state sub¯ d¯ with JP= 0+/1+ in the framework of QCD sum rules. We use the …