Vector and axial-vector mesons at finite temperature

Mallik, S.; Sarkar, Sourav

doi:10.1007/s10052-002-1007-x

Cited by 15 publications

(22 citation statements)

References 21 publications

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“…In principle, this term could have a resonant sub-channel contribution from the matrix element ρ π|A µ (0)|0 , which again is phase space suppressed (see results from [85]- [86] which can be easily adapted to this channel). An alternative argument clearly showing the non-existence of chiral mixing at finite T is based on the chiral Lagrangian to leading order [87], with all terms respecting Isospin and G-parity.…”

Section: Coefficients In Eq (54)mentioning

confidence: 99%

Finite Temperature QCD Sum Rules: A Review

Ayala

Domínguez

Loewe

2017

Advances in High Energy Physics

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The method of QCD sum rules at finite temperature is reviewed, with emphasis on recent results. These include predictions for the survival of charmonium and bottonium states, at and beyond the critical temperature for de-confinement, as later confirmed by lattice QCD simulations. Also included are determinations in the light-quark vector and axial-vector channels, allowing to analyse the Weinberg sum rules, and predict the dimuon spectrum in heavy ion collisions in the region of the rho-meson. Also in this sector, the determination of the temperature behaviour of the up-down quark mass, together with the pion decay constant, will be described. Finally, an extension of the QCD sum rule method to incorporate finite baryon chemical potential is reviewed.

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Section: Coefficients In Eq (54)mentioning

confidence: 99%

Finite Temperature QCD Sum Rules: A Review

Ayala

Domínguez

Loewe

2017

Advances in High Energy Physics

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“…For the interaction vertices entering the self-energy graphs for mesonic loops, we expand the relevant terms of the chiral Lagrangian and retain the lowest order terms to get [54,55] …”

Section: Interaction Lagrangian and Expressions For L µν For Mesonic mentioning

confidence: 99%

Analysis of ω self-energy at finite temperature and density in the real-time formalism

Ghosh

Sarkar

2013

Eur. Phys. J. A

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Using the real time formalism of field theory at finite temperature and density we have evaluated the in-medium ω self-energy from baryon and meson loops. We have analyzed in detail the discontinuities across the branch cuts of the self-energy function and obtained the imaginary part from the non-vanishing contributions in the cut regions. An extensive set of resonances have been considered in the baryon loops. Adding the meson loop contribution we obtain the full modified spectral function of the ω meson in a thermal gas of mesons, baryons and anti-baryons in equilibrium for several values of temperature and baryon chemical potential.

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“…In particular, the ρ-meson channel at finite temperature, as it was first treated in this paper, has been revisited several times over the years [75,76,77,81,82,80,79,83,87,88,84,91,89,90,106] because a number of substantial points were overlooked in [74] on both sides of the sum rule.…”

Section: Light (Axial)vector Mesons At T >mentioning

confidence: 99%

“…A sudden 'melting' of the spectrum should unambiguously indentify the deconfinement transition. QCD sum rules are predestined to make predictions of the T dependence of spectral parameters [74,76,78,79,81,84,87,88,89,90,91]. On the other hand, there are interesting effects inside a cold baryon-rich nuclear medium which can be probed by heavy ion colliders operating at lower center-of-mass energy.…”

Section: Quarkonia Moment Sum Rulesmentioning

confidence: 99%

Operator product expansion and quark–hadron duality: facts and riddles

Hofmann

2004

Progress in Particle and Nuclear Physics

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We review the status of the practical operator product expansion (OPE), when applied to twopoint correlators of QCD currents which interpolate to mesonic resonances, in view of the violations of local quark-hadron duality. Covered topics are: a mini-review of mesonic QCD sum rules in vacuum, at finite temperature, or at finite baryon density, a comparison of model calculations of current-current correlation functions in 2D and 4D with the OPE expressions, a discussion of meson distribution amplitudes in the light of nonperturbatively nonlocal modifications of the OPE, and a reorganization of the OPE which (partially) resums powers of covariant derivatives.

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Vector and axial-vector mesons at finite temperature

Cited by 15 publications

References 21 publications

Finite Temperature QCD Sum Rules: A Review

Finite Temperature QCD Sum Rules: A Review

Analysis of ω self-energy at finite temperature and density in the real-time formalism

Operator product expansion and quark–hadron duality: facts and riddles

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