Octet and decuplet baryon self-energies in relativistic SU(3) chiral effective theory

Copeland, P. M.; Ji, Chueng-Ryong; Melnitchouk, Wally

doi:10.1103/physrevd.103.094019

Cited by 5 publications

(5 citation statements)

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“…In this paper, we employ the latest calculations of the octet and decuplet baryon masses within a relativistic chiral SU(3) effective theory framework [27] that uses FRR to analyze high-precision lattice QCD data from the PACS-CS [28] and QCDSF-UKQCD [29] Collaborations. Using the Feynman-Hellmann theorem [14,16], we then use the parameters determined in the global fits to extract the light-quark and strange-quark σ-terms for all SU(3) octet and decuplet baryons, and discuss the impact of the results on baryon mass decompositions.…”

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confidence: 99%

“…The unique feature of this correction is that it is nonanalytic in the quark mass m q ∼ m 2 φ , according to the Gell-Mann-Oakes-Renner (GOR) relation [31], with a lowenergy structure that is model independent. In this work we use the latest calculations for the baryon self-energies computed within a relativistic chiral SU(3) effective theory regularized with FRR [27], which introduces an additional cutoff parameter Λ B .…”

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confidence: 99%

“…For the coupling constants, following Ref. [27] we use D = 0.85 and F = 0.41 for the octet-octet couplings, C = 6 5 g A for the octet-decuplet, and H = 9 5 g A for the decuplet-decuplet coupling, with g A = D + F = 1.26 the axial vector charge. For the pseudoscalar decay constant we use the convention where f φ = 93 MeV.…”

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confidence: 99%

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Octet and decuplet baryon $σ$-terms and mass decompositions

M.¹,

Ji²,

Melnitchouk³

2021

Preprint

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We present a comprehensive analysis of the SU(3) octet and decuplet baryon masses and σterms using high-precision lattice QCD data and chiral SU(3) effective theory with finite range regularization. The effects of various systematic uncertainties, including from the scale setting of the lattice data and the regularization prescriptions, are quantified. We find the pion-nucleon and strange nucleon σ-terms to be σπN = 44(3)(3) MeV and σNs = 50(6)(1) MeV, respectively. The results provide constraints on the energy-momentum tensor mass decompositions of the SU(3) octet and decuplet baryons, where we find the trace anomaly and quark/gluon energies decrease for strange baryons due to their larger strange σ-terms.

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confidence: 99%

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confidence: 99%

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Octet and decuplet baryon $σ$-terms and mass decompositions

M.¹,

Ji²,

Melnitchouk³

2021

Preprint

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“…Ref. [19] has provided a precise determination of the σ-terms for ground state baryons. The excited states of baryon resonances have been included with the corresponding ground state σ terms as prescribed in Ref.…”

Section: Mass Derivative Of Hadronsmentioning

confidence: 99%

“…The mass modifications of the ground state baryon octet and decuplet in the chiral limit are taken following Ref. [19]. M ρ = 690 (18) MeV in the chiral limit, as extracted in [13].…”

Section: The Condensate In the Chiral Limitmentioning

confidence: 99%

Aspects of chiral transition in a Hadron Resonance Gas model

Biswas

Petrezcky²,

Sharma³

2022

EPJ Web Conf.

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We study the chiral condensate for 2 + 1 flavor QCD with physical quarks within a non-interacting Hadron Resonance Gas (HRG) model. By including the latest information on the mass variation of the hadrons concerning the light quark mass, from lattice QCD and chiral perturbation theory, we show that it is possible to quite accurately account for the chiral crossover transition even within a conventional HRG model. We have calculated a pseudocritical temperature Tc=161.2±1.6 MeV and the curvature of crossover curve κ2=0.0203(7). These are in very good agreement with the latest continuum extrapolated results obtained from lattice QCD studies. We also discuss the limitations of extending such calculations toward the chiral limit. Furthermore, we study the effects of non-resonant hadron interactions within the HRG model and its consequences for the chiral transition in the regime of dense baryonic matter where lattice QCD results are not currently available.

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Octet and decuplet baryon σ terms and mass decompositions

Melnitchouk

2023

Phys. Rev. D

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Octet and decuplet baryon self-energies in relativistic SU(3) chiral effective theory

Cited by 5 publications

References 55 publications

Octet and decuplet baryon $σ$-terms and mass decompositions

Octet and decuplet baryon $σ$-terms and mass decompositions

Aspects of chiral transition in a Hadron Resonance Gas model

Octet and decuplet baryon σ terms and mass decompositions

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