Heavy-flavored tetraquark states with the 
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 configuration

Wu, Jing; Liu, Yan‐Rui; Chen, Kan; Liu, Xiang; Zhu, Shi-Lin

doi:10.1103/physrevd.97.094015

Cited by 160 publications

(127 citation statements)

References 171 publications

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“…Such a ground-state configuration has been suggested [57][58][59][60], and more recently in Refs. [46,49,61]. It is also supported by recent lattice QCD studies on fullyheavy four quark systems [62,63].…”

Section: Solving the Four-body Problemmentioning

confidence: 73%

“…If it does, what are their masses and decay properties? Recently, this debate has given rise to several studies within different approaches, including the constituent quark and diquark models [45][46][47][48], chiral quark model [49], chromo-electric potential model [50], and QCD sum rules [51,52]. All of these predict the existence of fullyheavy (bottom) tetraquarks, except for Ref.…”

Section: Introductionmentioning

confidence: 99%

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Spectroscopy and decays of the fully-heavy tetraquarks

et al. 2018

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We discuss the possible existence of the fullyheavy tetraquarks. We calculate the ground-state energy of the bbbb bound state, where b stands for the bottom quark, in a nonrelativistic effective field theory framework with onegluon-exchange (OGE) color Coulomb interaction, and in a relativized diquark model characterized by OGE plus a confining potential. Our analysis advocates the existence of uni-flavor heavy four-quark bound states. The ground state bbbb tetraquark mass is predicted to be (18.72 ± 0.02) GeV. Mass inequality relations among the lowest Q QQQ states, where Q ∈ {c, b}, and the corresponding heavy quarkonia are presented, which give the upper limit on the mass of ground state Q QQQ. The possible decays of the lowest bbbb are highlighted, which might provide useful references in the search for them in ongoing LHC experiments, and its width is estimated to be a few tens of MeV.

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Section: Solving the Four-body Problemmentioning

confidence: 73%

Section: Introductionmentioning

confidence: 99%

Spectroscopy and decays of the fully-heavy tetraquarks

et al. 2018

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“…We have explored various tetraquark configurations in a model with the color-magnetic interaction, Q QQQ in [60], Q QQq in [61], and cscs in [62]. A general feature for the mass spectra of these systems is that both the lightest and the heaviest states are those with J P = 0 + .…”

Section: The Spectrummentioning

confidence: 99%

“…We will again adopt the framework of the simple color-magnetic interaction, although it is not a dynamical model. Recently, we have systematically applied it to tetraquark and pentaquark states in order to understand the nature of the observed exotic hadrons and to predict exotic phenomena [60][61][62][63]. Here, we calculate the mass splittings of the tetraquark states with the qqQQ configuration and estimate their mass spectrum, with which we further discuss their decay patterns.…”

Section: Introductionmentioning

confidence: 99%

Exotic tetraquark states with the $$qq\bar{Q}\bar{Q}$$ q q Q ¯ Q ¯ configuration

et al. 2017

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In this work, we study systematically the mass splittings of the qqQQ (q = u, d, s and Q = c, b) tetraquark states with the color-magnetic interaction by considering color mixing effects and estimate roughly their masses. We find that the color mixing effect is relatively important for the J P = 0 + states and possible stable tetraquarks exist in the nnQQ (n = u, d) and nsQQ systems either with J = 0 or with J = 1. Possible decay patterns of the tetraquarks are briefly discussed.

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“…Some aspects of slow-roll inflation with non-minimal kinetic coupling have been analyzed in [58,59,60,61,62,63]. For a sample papers devoted to the study of slow-roll inflation in the context of Gauss-Bonnet (GB) coupling see [64,65,66,67,68,69,70,71,72,73,74,75,76,77]. This paper is dedicated to the study of the slow-roll inflation in the scalar-tensor model with non-minimal kinetic coupling to the Einstein tensor and coupling of the scalar field to the Gauss-Bonnet 4-dimensional invariant.…”

Section: Introductionmentioning

confidence: 99%

Slow-roll inflation with exponential potential in scalar-tensor models

Granda

Jimenez

2019

Eur. Phys. J. C

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A study of the slow-roll inflation for an exponential potential in the frame of the scalar-tensor theory is performed, where non-minimal kinetic coupling to curvature and non-minimal coupling of the scalar field to the Gauss-Bonnet invariant are considered. Different models were considered with couplings given by exponential functions of the scalar field, that lead to graceful exit from inflation and give values of the scalar spectral index and the tensor-to-scalar ratio in the region bounded by the current observational data. Special cases were found, where the coupling functions are inverse of the potential, that lead to inflation with constant slow-roll parameters, and it was posible to reconstruct the model parameters for given ns and r. In first-order approximation the standard consistency relation maintains its validity in the model with nonminimal coupling, but it modifies in presence of Gauss-Bonnet coupling. The obtained Hubble parameter during inflation, H ∼ 10 −5 M p and the energy scale of inflation V 1/4 ∼ 10 −3 M p , are consistent with the upper bounds set by latest observations. *

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Heavy-flavored tetraquark states with the QQQ¯Q¯ configuration

Cited by 160 publications

References 171 publications

Spectroscopy and decays of the fully-heavy tetraquarks

Spectroscopy and decays of the fully-heavy tetraquarks

Exotic tetraquark states with the $$qq\bar{Q}\bar{Q}$$ q q Q ¯ Q ¯ configuration

Slow-roll inflation with exponential potential in scalar-tensor models

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