Gluons in charmoniumlike states

Sun, Wei; Chen, Ying; Sun, Peng; Yang, Yi-Bo

doi:10.1103/physrevd.103.094503

Cited by 5 publications

(6 citation statements)

References 25 publications

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“…In this paper, we adopt the decomposition of QCD energymomentum tensor proposed by Ji [47], which is also used in Ref. [48][49][50]. The energy-momentum tensor of QCD is written as…”

Section: Formalism a Mass Decomposition From The Qcd Emtmentioning

confidence: 99%

“…On two gauge ensembles, the valence charmed quark mass for ground state 3 2 + are 3.192(13) GeV and 3.185 (19) GeV, are around 66% of the hadron mass. For conventional charmonium states [50], the valence charmed quark mass for ground state η c (0 −+ ) and J/ψ(1 −− ) are around 74% and 69% of the hadron mass. Thus, the ratio of the valence charmed quark masses for ground state triply charmed baryon to the whole baryon mass is slightly lower than that of the meson system with the same valence charm quark.…”

Section: B Mass Decompositionmentioning

confidence: 99%

“…[47], which opened up a new area for the study of the hadron structure. Recently, some researches of hadron mass decomposition from lattice QCD have been presented, such as the mass decomposition for proton [48], light and heavy meson [49] and charmonium [50]. The mass decomposition of hadron states reveals the complexity of hadron structure under the QCD framework and deepens our understanding of the hadron masses and their intrinsic properties.…”

Section: Introductionmentioning

confidence: 99%

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Triply charmed baryons mass decomposition from lattice QCD

Li¹,

Gui²,

Sun³

et al. 2022

Preprint

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We present the first lattice QCD calculation about the mass decomposition of triply charmed baryons with J P as 3 2 + and 3 2 − . The quark mass term H M contributes about 66% to the mass of 3 2 + state, which is slightly lower than that of the meson system with the same valence charm quark. Furthermore, based on our results, the total contribution of sea quarks, the gluons and the QCD anomaly accounts for about a quarter of the mass of these two triply charmed baryons. The mass difference of 3 2 + and 3 2 − states is mainly from the quark energy H E of the QCD energy-momentum tensor. For comparison, the mass splitting is also calculated under the framework of the constituent quark model.

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“…In this paper, we adopt the decomposition of QCD energymomentum tensor proposed by Ji [47], which is also used in Ref. [48][49][50]. The energy-momentum tensor of QCD is written as…”

Section: Formalism a Mass Decomposition From The Qcd Emtmentioning

confidence: 99%

Section: B Mass Decompositionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Triply charmed baryons mass decomposition from lattice QCD

Li¹,

Gui²,

Sun³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…For recent investigations of the hadron mass structure on the lattice see also refs. [65,66,[127][128][129]. A major difficulty is that lattice regularization breaks translation symmetry and makes the construction and renormalization of the EMT non-trivial.…”

Section: Translation Symmetrymentioning

confidence: 99%

Energy-momentum tensor in QCD: nucleon mass decomposition and mechanical equilibrium

Lorcé

Metz

Pasquini

et al. 2021

J. High Energ. Phys.

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We review and examine in detail recent developments regarding the question of the nucleon mass decomposition. We discuss in particular the virial theorem in quantum field theory and its implications for the nucleon mass decomposition and mechanical equilibrium. We reconsider the renormalization of the QCD energy-momentum tensor in minimal-subtraction-type schemes and the physical interpretation of its components, as well as the role played by the trace anomaly and Poincaré symmetry. We also study the concept of “quantum anomalous energy” proposed in some works as a new contribution to the nucleon mass. Examining the various arguments, we conclude that the quantum anomalous energy is not a genuine contribution to the mass sum rule, as a consequence of translation symmetry.

show abstract

“…For recent investigations of the hadron mass structure on the lattice see also Refs. [65,66,[127][128][129]. A major difficulty is that lattice regularization breaks translation symmetry and makes the construction and renormalization of the EMT non-trivial.…”

Section: B Translation Symmetrymentioning

confidence: 99%

Energy-momentum tensor in QCD: nucleon mass decomposition and mechanical equilibrium

Lorcé,

Metz,

Pasquini

et al. 2021

Preprint

View full text Add to dashboard Cite

We review and examine in detail recent developments regarding the question of the nucleon mass decomposition. We discuss in particular the virial theorem in quantum field theory and its implications for the nucleon mass decomposition and mechanical equilibrium. We reconsider the renormalization of the QCD energy-momentum tensor in minimal-subtraction-type schemes and the physical interpretation of its components, as well as the role played by the trace anomaly and Poincaré symmetry. We also study the concept of "quantum anomalous energy" proposed in some works as a new contribution to the nucleon mass. Examining the various arguments, we conclude that the quantum anomalous energy is not a genuine contribution to the mass sum rule, as a consequence of translation symmetry.

show abstract

Gluons in charmoniumlike states

Cited by 5 publications

References 25 publications

Triply charmed baryons mass decomposition from lattice QCD

Triply charmed baryons mass decomposition from lattice QCD

Energy-momentum tensor in QCD: nucleon mass decomposition and mechanical equilibrium

Energy-momentum tensor in QCD: nucleon mass decomposition and mechanical equilibrium

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