<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>D</mml:mi></mml:math>meson mass increase by restoration of chiral symmetry in nuclear matter

Suzuki, Kei; Gubler, Philipp; Oka, M.

doi:10.1103/physrevc.93.045209

Cited by 43 publications

(54 citation statements)

References 118 publications

(184 reference statements)

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“…In Ref. [67] On the other hand, using QCD sum rule and maximum entropy method authors observed the shift in mass of D + (D − ) mesons of about 23 (38) MeV [68], at nuclear saturation density.…”

Section: Resultsmentioning

confidence: 99%

In-medium pseudoscalar D/B mesons and charmonium decay width

Chhabra

Kumar

2017

Eur. Phys. J. A

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Using QCD sum rules and chiral SU(3) model, we investigate the effect of temperature, density, strangeness fraction and isospin asymmetric parameter on the shift in masses and decay constants of the pseudoscalar D and B meson in hadronic medium, which consist of nucleons and hyperons. The in-medium properties of D and B mesons within QCD sum rule approach depend upon the quark and gluon condensates. In chiral SU(3) model, quark and gluon condensates are introduced through the explicit symmetry breaking term and the trace anomaly property of the QCD, respectively and are written in terms of scalar fields σ, ζ, δ and χ. Hence, through medium modification of σ, ζ, δ and χ fields, we obtain the medium modified masses and decay constants of D and B mesons. As an application, using 3 P 0 model, we calculate the in-medium decay width of the higher charmonium states ψ(3686), ψ(3770) and χ(3556) to the DD pairs, considering the in-medium mass of D mesons. These results may be important to understand the possible outcomes of high energy physics experiments, e.g., CBM and PANDA at GSI, Germany.

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Section: Resultsmentioning

confidence: 99%

In-medium pseudoscalar D/B mesons and charmonium decay width

Chhabra

Kumar

2017

Eur. Phys. J. A

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“…The Gaussian sum rule was successfully applied in Refs. [233,234] to the nucleon and D meson sum rules, in combination with a numerical maximum entropy method (MEM) analysis to be discussed below.…”

Section: Derivation Of Sum Rules For Practical Numerical Analysismentioning

confidence: 99%

Recent progress in QCD condensate evaluations and sum rules

Gubler

Satow

2019

Progress in Particle and Nuclear Physics

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We review the recent status of the QCD sum rule approach to study the properties of hadrons in vacuum and in hot or dense matter. Special focus is laid on the progress made in the evaluation of the QCD condensates, which are the input of all QCD sum rule calculations, and for which much new information has become available through high precision lattice QCD calculations, chiral perturbation theory and experimental measurements. Furthermore, we critically examine common analysis methods for QCD sum rules and contrast them with potential alternative strategies. The status of QCD sum rule studies investigating the modification of hadrons at finite density as well as recent derivations of exact sum rules applicable to finite temperature spectral functions, are also reviewed.

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“…Several studies on heavy-light mesons at finite temperature and/or density are found in the literatures [16][17][18][19][20][21][23][24][25][26][27] (see also Ref. [28] for a review and references therein).…”

Section: Introductionmentioning

confidence: 99%

Spectral functions for D¯ and D¯0* mesons in nuclear matter with partial restoration of chiral symmetry

2017

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We investigate the in-medium masses of aD (0 − ) meson and aD * 0 (0 + ) meson and spectral functions forD andD * 0 meson channels in nuclear matter. These mesons are introduced as chiral partner in the chiral symmetry broken vacuum, hence they are useful to explore the partial restoration of the broken chiral symmetry in nuclear matter. We consider the linear sigma model to describe the chiral symmetry breaking. Our study shows that the loop corrections toD andD * 0 meson masses provide a smaller mass splitting at finite density than that in vacuum, whose result indicates a tendency of the restoration of the chiral symmetry. We investigate also the spectral function forD * 0 meson channel, and find three peaks. The first peak which corresponds to the resonance ofD * 0 meson is broadened by collisions with nucleons in medium, and the peak position shifts to lower mass due to the partial restoration of chiral symmetry as the density increases. The second peak is identified as a threshold enhancement which shows a remarkable enhancement as the density increase. The third peak is Landau damping. The obtained properties ofD andD * 0 mesons in nuclear matter will provide useful information for experiments.

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Dmeson mass increase by restoration of chiral symmetry in nuclear matter

Cited by 43 publications

References 118 publications

In-medium pseudoscalar D/B mesons and charmonium decay width

In-medium pseudoscalar D/B mesons and charmonium decay width

Recent progress in QCD condensate evaluations and sum rules

Spectral functions for D¯ and D¯0* mesons in nuclear matter with partial restoration of chiral symmetry

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