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The hidden-charm pentaquark and tetraquark states

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Pentaquark and Tetraquark States

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Hunting for exotic doubly hidden-charm/bottom tetraquark states

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A review of the open charm and open bottom systems

This work reviews the experimental and theoretical progress in this field and reports on the discovery of two narrow charm-strange states and more excited heavy hadrons reported in 2003.
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Towards Exotic Hidden-Charm Pentaquarks in QCD.

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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Mass spectra of Zc and Zb exotic states as hadron molecules

We construct charmoniumlike and bottomoniumlike molecular interpolating currents with quantum numbers JPC=1+- in a systematic way, including both color singlet-singlet and color octet-octet…
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QCD sum rule study of hidden-charm pentaquarks

We study the mass spectra of hidden-charm pentaquarks having spin $$J = {1\over 2}/{3\over 2}/{5\over 2}$$J=12/32/52 and quark contents $$uud c \bar{c}$$uudcc¯. We systematically construct all the…
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D -wave charmed and bottomed baryons from QCD sum rules

We study the D-wave charmed baryons of SUd(3) flavor (3) over bar (F) using the method of QCD sum rules in the framework of heavy quark effective theory. We find that the Lambda(c)(2880),…
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An updated review of the new hadron states

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 review of the recent…
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Possible partner state of the Y(2175)

We study the Y(2175) using the method of QCD sum rules. There are two independent sss¯s¯ interpolating currents with JPC=1--, and we calculate both their diagonal and their off-diagonal correlation…
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