Tetraquark bound states in the heavy-light heavy-light system

Brown, Zachary S.; Orginos, Konstantinos

doi:10.1103/physrevd.86.114506

Cited by 89 publications

(70 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A new method to study this setup has been proposed in [244], and might give new information about the diquark formations. Also systems with two static quarks and two light dynamical antiquarks have been explored [245][246][247][248].…”

Section: Lattice Qcdmentioning

confidence: 99%

Multiquark resonances

2017

View full text Add to dashboard Cite

Multiquark resonances are undoubtedly experimentally observed. The number of states and the amount of details on their properties have been growing over the years. It is very recent the discovery of two pentaquarks and the confirmation of four tetraquarks, two of which had not been observed before. We mainly review the theoretical understanding of this sector of particle physics phenomenology and present some considerations attempting a coherent description of the so called X and Z resonances. The prominent problems plaguing theoretical models, like the absence of selection rules limiting the number of states predicted, motivate new directions in model building. Data are reviewed going through all of the observed resonances with particular attention to their common features and the purpose of providing a starting point to further research.

show abstract

Section: Lattice Qcdmentioning

confidence: 99%

Multiquark resonances

2017

View full text Add to dashboard Cite

show abstract

“…[41,42]. In addition, lattice QCD simulations gave us more hints on this issue [43][44][45][46][47][48][49][50][51][52][53][54][55][56][57]. An intuitive picture [55] in Lattice QCD is that in a tetraquark with qqQQ configuration, when the two heavy quarks are in a long separation, the gluon exchange force between them is screened by the two light quarks.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2017

View full text Add to dashboard Cite

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.

show abstract

“…Whether a binding is realized away from this limit, as in nature, for charm and bottom quarks, is subject to non-perturbative effects and only lattice QCD calculations can give a rigorous answer to this question. Previous studies have attempted to measure this binding [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16], however in [17] 1 we report on the, to our knowledge, first such calculation close to the physical point away from the static limit in the qq bb sector. The study benefits from the use of wall sources and a GEVP analysis.…”

Section: Introduction and Phenomenological Observationsmentioning

confidence: 85%

Heavy and light spectroscopy near the physical point, Part II: Tetraquarks

Francis¹,

Hudspith²,

Lewis³

et al. 2016

Proceedings of 34th Annual International Symposium on Lattice Field Theory — PoS(LATTICE2016)

View full text Add to dashboard Cite

Having introduced the ensembles and basic spectrum in Part I of this conference contribution, we focus on results for a doubly heavy tetraquark candidate, qq QQ . Based on phenomenological observations regarding heavy baryon systems, we motivate two possible lattice interpolating operators: a diquark-antidiquark and a meson-meson. We show that these operators exhibit good behaviour both in terms of lattice QCD and their phenomenological interpretation. In particular we study the udbb and sbb flavor combinations and analyze their binding. At the physical point, at finite lattice spacing, we find strong indications for binding of these tetraquark candidates. We comment on possible finite volume effects and search windows for experimental confirmation.34th annual International Symposium on Lattice Field Theory

show abstract

Tetraquark bound states in the heavy-light heavy-light system

Cited by 89 publications

References 17 publications

Multiquark resonances

Multiquark resonances

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

Heavy and light spectroscopy near the physical point, Part II: Tetraquarks

Contact Info

Product

Resources

About