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1.
Substructure of Multiquark Hadrons (Snowmass 2021 White Paper) / Brambilla, Nora (Munich, Tech. U. ; TUM-IAS, Munich ; MCQST, Munich) ; Chen, Hua-Xing (Southeast U., Nanjing) ; Esposito, Angelo (Princeton, Inst. Advanced Study) ; Ferretti, Jacopo (Jyvaskyla U.) ; Francis, Anthony (Bern U. ; Taiwan, Natl. Chiao Tung U. ; CERN) ; Guo, Feng-Kun (Beijing, Inst. Theor. Phys. ; Beijing, GUCAS) ; Hanhart, Christoph (Julich, Forschungszentrum) ; Hosaka, Atsushi (Osaka U., Res. Ctr. Nucl. Phys.) ; Jaffe, Robert L. (MIT) ; Karliner, Marek (Tel Aviv U.) et al.
In recent years there has been a rapidly growing body of experimental evidence for existence of exotic, multiquark hadrons, i.e. [...]
arXiv:2203.16583.
- 47 p.
eConf - Fulltext
2.
Decoding the nature of the pentaquark states from LHCb / Du, Meng-Lin (Bonn U., HISKP ; U. Bonn, Phys. Inst., BCTP) ; Baru, Vadim (Bonn U., HISKP ; U. Bonn, Phys. Inst., BCTP ; Moscow, ITEP ; Lebedev Inst.) ; Guo, Feng-Kun (Beijing, KITPC ; Beijing, GUCAS) ; Hanhart, Christoph (IAS, Julich ; JCHP, Julich) ; Meißner, Ulf-G. (Bonn U., HISKP ; U. Bonn, Phys. Inst., BCTP ; IAS, Julich ; JCHP, Julich ; Tbilisi State U.) ; Oller, José A. (Murcia U.) ; Wang, Qian (South China Normal U. ; Beijing, Inst. High Energy Phys.)
The updated analysis of LHCb of the $\Delta_b^0 \to J/\psi pK^-$ process with an order of magnitude larger data sample led to three narrow pentaquark states, i.e. $P_c(4312)$, $P_c(4440)$ and $P_c(4457)$. [...]
2020 - Published in : 10.1142/9789811219313_0045
In : XVIII International Conference on Hadron Spectroscopy and Structure, Guilin, China, 16 - 21 Aug 2019, pp.275-280
3.
Coupled-channel interpretation of the LHCb double-$J/\psi$ spectrum and hints of a new state near the $J/\psi J/\psi$ threshold / Dong, Xiang-Kun (Beijing, Inst. Theor. Phys. ; Beijing, GUCAS) ; Baru, Vadim (Bonn U., HISKP ; U. Bonn, Phys. Inst., BCTP ; Kurchatov Inst., Moscow ; Lebedev Inst.) ; Guo, Feng-Kun (Beijing, Inst. Theor. Phys. ; Beijing, GUCAS) ; Hanhart, Christoph (IAS, Julich ; Julich, Forschungszentrum ; JCHP, Julich) ; Nefediev, Alexey (LPI, Moscow (main) ; Moscow, MIPT)
Recently, the LHCb Collaboration reported pronounced structures in the invariant mass spectrum of $J/\psi$-pairs produced in proton-proton collisions at the Large Hadron Collider. In this Letter, we argue that the data can be very well described within two variants of a coupled-channel approach employing $T$-matrices consistent with unitarity: (i) with just two channels, $J/\psi J/\psi$ and $\psi(2S)J/\psi$, as long as energy-dependent interactions in these channels are allowed, or (ii) with three channels $J/\psi J/\psi$, $\psi(2S)J/\psi$ and $\psi(3770)J/\psi$ with just constant contact interactions. [...]
arXiv:2009.07795.- 2021-09-07 - 6 p. Article from SCOAP3: PDF; Fulltext: PDF;
4.
Interpretation of the LHCb $P_c$ States as Hadronic Molecules and Hints of a Narrow $P_c(4380)$ / Du, Meng-Lin (Bonn U. ; Bonn U., HISKP) ; Baru, Vadim (Bonn U. ; Bonn U., HISKP ; Moscow, ITEP ; Lebedev Inst.) ; Guo, Feng-Kun (Beijing, KITPC ; Beijing, GUCAS) ; Hanhart, Christoph (IAS, Julich ; JCHP, Julich) ; Meißner, Ulf-G (Bonn U. ; Bonn U., HISKP ; IAS, Julich ; JCHP, Julich ; Tbilisi State U.) ; Oller, José A. (Murcia U.) ; Wang, Qian (South China Normal U. ; TPCSF, Beijing)
Three hidden-charm pentaquark $P_c$ states, $P_c(4312)$, $P_c(4440)$, and $P_c(4457)$ were revealed in the $\Lambda_b^0\to J/\psi p K^-$ process measured by LHCb using both run I and run II data. Their nature is under lively discussion, and their quantum numbers have not been determined. [...]
arXiv:1910.11846.- 2020-02-20 - 7 p. - Published in : Phys. Rev. Lett. 124 (2020) 072001 Article from SCOAP3: PDF; Fulltext: PDF;
5.
XVIII International Conference on Hadron Spectroscopy and Structure - Hadron 2019   16 - 21 Aug 2019  - Guilin, China  / Guo, Feng-Kun (ed.); Liang, Wei-Hong (ed.)
Singapore : World Scientific, 2020
e-proceedings

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