Light- and strange-quark mass dependence of the ρ(770) meson revisited

Molina, R.; Elvira, J. Ruiz de

doi:10.1007/jhep11(2020)017

Cited by 19 publications

(16 citation statements)

References 160 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a test of the capability of Methods 1 and 2 to describe the K * 0 (700), we get at T = 0 √ s p (1) = (731 ± 7) − i(280 ± 9) MeV and √ s p (2) = (679 ± 6) − i(289 ± 8) MeV, perfectly consistent with precise dispersive calculations [56][57][58], where we have used the subtraction constant in [49] and the Low-Energy Constants (LECs) in [59], as well as their uncertainties, for methods 1 and 2, respectively.…”

supporting

confidence: 76%

“…As a test of the capability of Methods 1 and 2 to describe the , we get at and , for method 1 and 2, respectively, where we have used the subtraction constant value and error in [ 50 ] for method 1 and the low-energy constants (LECs) of the global fit in [ 57 ] for method 2. For the latter, the uncertainties are computed from the propagation in quadrature of the LEC errors.…”

Section: Properties Of Andmentioning

confidence: 99%

See 1 more Smart Citation

The role of strangeness in chiral and $$U(1)_A$$ restoration

et al. 2021

View full text Add to dashboard Cite

We use recently derived Ward identities and lattice data for the light- and strange-quark condensates to reconstruct the scalar and pseudoscalar susceptibilities ($$\chi _S^\kappa $$ χ S κ , $$\chi _P^K$$ χ P K ) in the isospin 1/2 channel. We show that $$\chi _S^\kappa $$ χ S κ develops a maximum above the QCD chiral transition, after which it degenerates with $$\chi _P^K$$ χ P K . We also obtain $$\chi _S^\kappa $$ χ S κ within Unitarized Chiral Perturbation Theory (UChPT) at finite temperature, when it is saturated with the $$K_0^*(700)$$ K 0 ∗ ( 700 ) (or $$\kappa $$ κ ) meson, the dominant lowest-energy state in the isospin 1/2 scalar channel of $$\pi K$$ π K scattering. Such UChPT result reproduces the expected peak structure, revealing the importance of thermal interactions, and makes it possible to examine the $$\chi _S^\kappa $$ χ S κ dependence on the light- and strange-quark masses. A consistent picture emerges controlled by the $$m_l/m_s$$ m l / m s ratio that allows one studying $$K-\kappa $$ K - κ degeneration in the chiral, two-flavor and SU(3) limits. These results provide an alternative sign for $$O(4)\times U(1)_A$$ O ( 4 ) × U ( 1 ) A restoration that can be explored in lattice simulations and highlight the role of strangeness, which regulated by the strange-quark condensate helps to reconcile the current tension among lattice results regarding $$U(1)_A$$ U ( 1 ) A restoration.

show abstract

supporting

confidence: 76%

Section: Properties Of Andmentioning

confidence: 99%

The role of strangeness in chiral and $$U(1)_A$$ restoration

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Bootstrapping has become in the recent past a promising method to assess uncertainties in spectroscopy analyses [56,86,93,100,102,[114][115][116]. In particular, it allows one to map the likelihood for a given minimum, which is not accessi-…”

Section: Data Availability Statementmentioning

confidence: 99%

Scalar and tensor resonances in $$J/\psi $$ radiative decays

et al. 2022

View full text Add to dashboard Cite

We perform a systematic analysis of the $$J/\psi \rightarrow \gamma \pi ^0\pi ^0$$ J / ψ → γ π 0 π 0 and $$\rightarrow \gamma K_S^0 K_S^0$$ → γ K S 0 K S 0 partial waves measured by BESIII. We use a large set of amplitude parametrizations to reduce the model bias. We determine the physical properties of seven scalar and tensor resonances in the 1–$$2.5 \, {\mathrm {GeV}} $$ 2.5 GeV mass range. These include the well known $$f_0(1500)$$ f 0 ( 1500 ) and $$f_0(1710)$$ f 0 ( 1710 ) , that are considered to be the primary glueball candidates. The hierarchy of resonance couplings determined from this analysis favors the latter as the one with the largest glueball component.

show abstract

“…Bootstrapping has become in the recent past a promising method to assess uncertainties in spectroscopy analyses [55,83,90,95,97,[109][110][111]. In particular it allows one to map the likelihood for a given minimum, which is not accessible through simple error propagation in non-linear problems, or when the number of parameters is very large.…”

Section: Appendix B: Bootstrap and The γ Distributionmentioning

confidence: 99%

Scalar and tensor resonances in $J/ψ$ radiative decays

Rodas¹,

Pilloni²,

Albaladejo³

et al. 2021

Preprint

View full text Add to dashboard Cite

We perform a systematic analysis of the J/ψ → γπ 0 π 0 and → γK 0 S K 0 S partial waves measured by BESIII. We use a large set of amplitude parametrizations to reduce the model bias. We determine the physical properties of seven scalar and tensor resonances in the 1-2.5 GeV mass range. These include the well known f0(1500) and f0( 1710), that are considered to be the primary glueball candidates. The hierarchy of resonance couplings determined from this analysis favors the latter as the one with the largest glueball component.

show abstract

Light- and strange-quark mass dependence of the ρ(770) meson revisited

Cited by 19 publications

References 160 publications

The role of strangeness in chiral and $$U(1)_A$$ restoration

The role of strangeness in chiral and $$U(1)_A$$ restoration

Scalar and tensor resonances in $$J/\psi $$ radiative decays

Scalar and tensor resonances in $J/ψ$ radiative decays

Contact Info

Product

Resources

About