Resonance effects in pion and kaon decay constants

Guo, Zhi-Hui; Sanz-Cillero, Juan José

doi:10.1103/physrevd.89.094024

Cited by 13 publications

(22 citation statements)

References 114 publications

(370 reference statements)

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“…The other condition is that in the meantime we require that our extrapolation formula for F π reproduces other existing lattice simulation results [61][62][63][64], which were analyzed in Ref. [65] in a chiral framework, when using the specific masses in Eq. (36).…”

Section: U (3) χPt In a Finite Volumementioning

confidence: 99%

Chiral study of the a0(980) resonance and πη scattering phase shifts in light of a recent lattice simulation

Guo¹,

Liu²,

Meißner³

et al. 2017

Phys. Rev. D

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We investigate the a 0 (980) resonance within chiral effective field theory through a threecoupled-channel analysis, namely πη, KK and πη ′ . A global fit to recent lattice finitevolume energy levels from πη scattering and relevant experimental data on a πη event distribution and the γγ → πη cross section is performed. Both the leading and next-toleading-order analyses lead to similar and successful descriptions of the finite-volume energy levels and the experimental data. However, these two different analyses yield different πη scattering phase shifts for the physical masses for the π, K, η and η ′ mesons. The inelasticities, the pole positions in the complex energy plane and their residues are calculated both for unphysical and physical meson masses.

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Section: U (3) χPt In a Finite Volumementioning

confidence: 99%

Chiral study of the a0(980) resonance and πη scattering phase shifts in light of a recent lattice simulation

Guo¹,

Liu²,

Meißner³

et al. 2017

Phys. Rev. D

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“…(9) and can also perfectly describe the quark mass dependences of the ρ(770) mass from lattice simulations [55,56]. Therefore it is justified for us to simply use the physical masses for the vector resonances in the phenomenological discussions.…”

Section: Theoretical Frameworkmentioning

confidence: 99%

Unified study ofJ/ψ→PV,Pγ()
Chen
¹
,
Guo
²
,
Zou
³

2015
Phys. Rev. D*
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30
1
24
0
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Within the framework of the effective Lagrangian approach, we perform a thorough analy-where V stand for light vector resonances, P stand for light pseudoscalar mesons, and γ * subsequently decays into lepton pairs. The processes with light pseudoscalar mesons η and η ′ are paid special attention to and the two-mixing-angle scheme is employed to describe their mixing. The four mixing parameters both in singlet-octet and quark-flavor bases are updated in this work. We confirm that the J/ψ → η(η ′ )γ ( * ) processes are predominantlyPredictions for the J/ψ → P µ + µ − are presented. A detailed discussion on the interplay between electromagnetic and strong transitions in the J/ψ → V P decays is given.

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“…However, it is unclear how to order this plethora of terms and how to consider the loop effects implied [9,22]. In both approaches the challenge is caused by meson resonances that are close to the vector mesons in mass [23][24][25].…”

Section: Introductionmentioning

confidence: 99%

On the chiral expansion of vector meson masses

2018

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We study the chiral expansion of meson masses and decay constants using a chiral Lagrangian that was constructed previously based on the hadrogenesis conjecture. The one-loop self energies of the Goldstone bosons and vector mesons are evaluated. It is illustrated that a renormalizeable effective field theory arises once specific conditions on the low-energy constants are imposed. For the case where the hadrogenesis mass gap scale Λ HG is substantially larger than the chiral symmetry breaking scale Λ χ a partial summation scheme is required. All terms proportional to (M/Λ χ ) n can be summed by a suitable renormalization, where M is the chiral and large-N c limit of the vector meson masses in QCD. The size of loop effects from vector meson degrees of freedom is illustrated for physical quarks masses. Naturally sized effects are observed that have significant impact on the chiral structure of low-energy QCD with three light flavours.

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Resonance effects in pion and kaon decay constants

Abstract: In this article we study impact of the lightest vector and scalar resonance multiplets in the pion and kaon decay constants up to next-to-leading order in the 1/N C expansion, i.e., up to the one-loop level. The

Cited by 13 publications

References 114 publications

Chiral study of the a0(980) resonance and πη scattering phase shifts in light of a recent lattice simulation

Chiral study of the a0(980) resonance and πη scattering phase shifts in light of a recent lattice simulation

Unified study ofJ/ψ→PV,Pγ()
Chen
¹
,
Guo
²
,
Zou
³

2015
Phys. Rev. D*
Self Cite
30
1
24
0
View full text Add to dashboard Cite

On the chiral expansion of vector meson masses

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Resonance effects in pion and kaon decay constants

Abstract: In this article we study impact of the lightest vector and scalar resonance multiplets in the pion and kaon decay constants up to next-to-leading order in the 1/N C expansion, i.e., up to the one-loop level. The

Cited by 13 publications

References 114 publications

Chiral study of the a0(980) resonance and πη scattering phase shifts in light of a recent lattice simulation

Chiral study of the a0(980) resonance and πη scattering phase shifts in light of a recent lattice simulation

Unified study ofJ/ψ→PV,Pγ(*)Chen1, Guo2, Zou3 2015Phys. Rev. DSelf Cite301240View full textAdd to dashboardCite

On the chiral expansion of vector meson masses

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Unified study ofJ/ψ→PV,Pγ()
Chen
¹
,
Guo
²
,
Zou
³

2015
Phys. Rev. D*
Self Cite
30
1
24
0
View full text Add to dashboard Cite