Open Access
Possible hidden-charm molecular baryons composed of an anti-charmed meson and a charmed baryon
TLDR
In this paper, the authors studied the possible existence of very loosely bound hidden-charm molecular baryons composed of an anti-charmed meson and a charmed baryon.Citations
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Hadronic molecules
TL;DR: In this article, the authors review experimental evidences of various candidates of hadronic molecules, and methods of identifying such structures Nonrelativistic effective field theories are the suitable framework for studying hadronic molecule, and are discussed in both the continuum and finite volumes.
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Pentaquark and Tetraquark states
TL;DR: In this paper, the experimental and theoretical efforts on the hidden heavy flavor multiquark systems in the past three years were reviewed extensively in [Phys. Rept. 639 (2016) 1-121].
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Towards exotic hidden-charm pentaquarks in QCD
TL;DR: A QCD sum rule investigation is performed, by which they can be identified as exotic hidden-charm pentaquarks composed of an anticharmed meson and a charmed baryon, and results suggest that P(c)(4380) and P (c)(4450) have quantum numbers J(P)=3/2(-) and 5/2 (+), respectively.
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The Pentaquark Candidates in the Dynamical Diquark Picture
TL;DR: In this paper, the authors describe the pentaquark candidates P c + ( 4380 ) and P c+ ( 4450 ) in terms of a confined but rapidly separating color-antitriplet diquark cu and color-triplet triquark cu.
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Understanding the newly observed heavy pentaquark candidates
TL;DR: In this article, the anomalous triangle singularity (ATS) transitions in the specific kinematics of Λ b → J / ψ K − p were investigated and several thresholds can contribute to the enhancements of the newly observed heavy pentaquark candidates.
References
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Model independent determination of the spins of the $P_{c}$(4440) and $P_{c}$(4457) from the spectroscopy of the triply charmed dibaryons
Ya-Wen Pan,Ming-Zhu Liu,Fang-Zheng Peng,Mario Sánchez Sánchez,Li-Sheng Geng,Li-Sheng Geng,Manuel Pavon Valderrama +6 more
TL;DR: In this article, it was shown that heavy-antiquark-diquark symmetry induces a model-independent relation between the spin splitting in the masses of the pentaquarks and the corresponding splitting for the triply charmed dibaryons, which, if confirmed in the lattice, will largely expand our understanding of the nonperturbative strong interaction in the heavyquark sector.
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Hidden-charm pentaquark states through the current algebra: From their productions to decays
TL;DR: In this article, the authors constructed the corresponding interpolating currents and calculated their masses and decay constants using QCD sum rules, and showed that there may exist seven hadronic molecular states of 1/2 and 3/2^-$ in the current algebra.
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Heavy quark spin multiplet structure of P ¯ ( * ) Σ Q ( * ) molecular states
TL;DR: In this article, the structure of heavy quark spin multiplets for heavy meson-baryon molecular states in a coupled system was studied and the one-pion exchange potential with S-wave orbital angular momentum was constructed.
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Quadruply charmed dibaryons as heavy quark symmetry partners of the DDK bound state
Tian Wei Wu,Ming Zhu Liu,Li-Sheng Geng,Li-Sheng Geng,Emiko Hiyama,Manuel Pavon Valderrama,Wen-Ling Wang +6 more
TL;DR: In this paper, Liu et al. studied whether a three-body system can form a bound state with a binding energy of 80-118 MeV and showed that it can.
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Building up the spectrum of pentaquark states as hadronic molecules
TL;DR: In this article, the LHCb's discovery of $P_c$ and $P_{cs} pentaquark states not only reveal a new kind of hadronic molecules, but also shed new light on the possible structure of pent-aquark components in baryons, hence may play very important role for understanding unquenching dynamics and the whole baryon spectroscopy.