Production, spectroscopy and properties of heavy hadrons

Galanti, M.; Alice, Atlas; Collaborations, LHCb

doi:10.22323/1.321.0132

Cited by 3 publications

(6 citation statements)

References 28 publications

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“…3 supports the following 24 distinct flavour-SU (5) combinations for 1/2 + baryons. 5] a [13,17]    , (B.5b) 6] a [14,18] [3,8] a [14,21]    , (B.5g) [4,7] a [15,19]    , (B.5j) [4,9] a [15,22]    , (B.5l) [3,4] s 10 a [14,15]    , (B.5p) [8,9] s 10 a [21,22]    , (B.5t)…”

Section: /2 + Spin-flavour Combinationsmentioning

confidence: 99%

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Masses of ground-state mesons and baryons, including those with heavy quarks

et al. 2019

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Using a confining, symmetry-preserving regularisation of a vector×vector contact interaction, we compute the spectra of ground-state pseudoscalar and vector (fḡ) mesons, scalar and axial-vector (f g) diquarks, and J P = 1/2 + , 3/2 + (f gh) baryons, where f, g, h ∈ {u, d, s, c, b}. The diquark correlations are essentially dynamical and play a key role in formulating and solving the threevalence-quark baryon problems. The baryon spectrum obtained from this largely-algebraic approach reproduces the 22 known experimental masses with an accuracy of 2.9(2.4)%. It also possesses the richness of states typical of constituent-quark models, predicting many heavy-quark baryons not yet observed. This study indicates that diquark correlations are an important component of all baryons; and owing to the dynamical character of the diquarks, it is typically the lightest allowed diquark correlation which defines the most important component of a baryon's Faddeev amplitude. *

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Section: /2 + Spin-flavour Combinationsmentioning

confidence: 99%

“…[1].) This challenge has been accepted, with an array of dedicated experiments underway, at facilities worldwide, which seek to detect the missing states [2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Masses of ground-state mesons and baryons, including those with heavy quarks

et al. 2019

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“…also includes systems containing {s, c, b} quarks and/or related antiquarks. The empiria e-mail: yinpl@njupt.edu.cn b e-mail: phycui@nju.edu.cn c e-mail: cdroberts@nju.edu.cn (corresponding author) d e-mail: jsegovia@upo.es cally "missing" states are being sought in a worldwide effort [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Masses of positive- and negative-parity hadron ground-states, including those with heavy quarks

et al. 2021

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A symmetry-preserving treatment of a vector $$\times $$ × vector contact interaction is used to compute spectra of ground-state $$J^P = 0^\pm , 1^\pm $$ J P = 0 ± , 1 ± $$(f{\bar{g}})$$ ( f g ¯ ) mesons, their partner diquark correlations, and $$J^P=1/2^\pm , 3/2^\pm $$ J P = 1 / 2 ± , 3 / 2 ± (fgh) baryons, where $$f,g,h \in \{u,d,s,c,b\}$$ f , g , h ∈ { u , d , s , c , b } . Results for the leptonic decay constants of all mesons are also obtained, including scalar and pseudovector states involving heavy quarks. The spectrum of baryons produced by this chiefly algebraic approach reproduces the 64 masses known empirically or computed using lattice-regularised quantum chromodynamics with an accuracy of 1.4(1.2)%. It also has the richness of states typical of constituent-quark models and predicts many baryon states that have not yet been observed. The study indicates that dynamical, nonpointlike diquark correlations play an important role in all baryons; and, typically, the lightest allowed diquark is the most important component of a baryon’s Faddeev amplitude.

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“…(10), this ordering is reversed for pseudoscalar and vector diquark correlations. Notwithstanding this, omitting the [ud] 0 + and [us] 0 + correlations, the mass of a diquark's partner meson is a reasonable guide to the diquark's mass: the mean difference in absolute value is 0.08 (7) GeV.…”

Section: Diquark Mass Spectrummentioning

confidence: 99%

“…also includes systems containing {s, c, b} quarks and/or related an-tiquarks. The empirically "missing" states are being sought in a worldwide effort [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Masses of positive- and negative-parity hadron ground-states, including those with heavy quarks

Yin,

Cui,

Roberts

et al. 2021

Preprint

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A symmetry-preserving treatment of a vec-tor×vector contact interaction is used to compute spectra of ground-state J P = 0 ± , 1 ± (f ḡ) mesons, their partner diquark correlations, and J P = 1/2 ± , 3/2 ± (f g h) baryons, where f, g, h ∈ {u, d, s, c, b}. Results for the leptonic decay constants of all mesons are also obtained, including scalar and pseudovector states involving heavy quarks. The spectrum of baryons produced by this chiefly algebraic approach reproduces the 64 masses known empirically or computed using latticeregularised quantum chromodynamics with an accuracy of 1.4(1.2)%. It also has the richness of states typical of constituent-quark models and predicts many baryon states that have not yet been observed. The study indicates that dynamical, nonpointlike diquark correlations play an important role in all baryons; and, typically, the lightest allowed diquark is the most important component of a baryon's Faddeev amplitude.

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Production, spectroscopy and properties of heavy hadrons

Cited by 3 publications

References 28 publications

Masses of ground-state mesons and baryons, including those with heavy quarks

Masses of ground-state mesons and baryons, including those with heavy quarks

Masses of positive- and negative-parity hadron ground-states, including those with heavy quarks

Masses of positive- and negative-parity hadron ground-states, including those with heavy quarks

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