Open-charm mesons in nuclear matter at finite temperature beyond the zero-range approximation

Jiménez-Tejero, C.E.; Ramos, À.; Tolós, Laura; Vidaña, Isaac

doi:10.1103/physrevc.84.015208

Cited by 35 publications

(42 citation statements)

References 114 publications

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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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“…Let us here mention the potential effect of in-medium broadening of the D-meson peaks, which was discussed in works based on hadronic effective theories. The width broadening may be attributed to some physical origins such as resonant-hole excitations Y c N −1 of a charmed baryon Y c and a nucleon hole N −1 [6][7][8][9][10]. As sum rules, however, only provide integrals of the spectral function, they are generally not very sensitive to peak widths as long as the width is much smaller than the mass.…”

Section: B Spectral Functions In Nuclear Mediummentioning

confidence: 99%

“…These can be classified into two approaches: theories based on hadron and those based on quark and gluon degrees of freedom. The former, described by interactions between hadrons, includes self-consistent unitarized coupled-channel approaches with flavor SU (3) [5], flavor SU (4) symmetry, and a t-channel vector meson exchange (TVME) model [6], which have been further developed through an improved kernel and renormalization scheme [7,8], improvement beyond zero range approximation [9], and a SU (8) spin-flavor symmetric model implementing heavy quark spin symmetry [10]. There are furthermore results from a chiral SU (3) model extended to SU (4) [11][12][13][14] and a pion exchange model betweenD and N [15].…”

Section: Introductionmentioning

confidence: 99%

Dmeson mass increase by restoration of chiral symmetry in nuclear matter

2016

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Spectral functions of the pseudoscalar D meson in the nuclear medium are analyzed using QCD sum rules and the maximum entropy method. This approach enables us to extract the spectral functions without any phenomenological assumption, and thus to visualize in-medium modification of the spectral functions directly. It is found that the reduction of the chiral condensates of dimension 3 and 5 causes the masses of both D + and D − mesons to grow gradually at finite density. Additionally, we construct charge-conjugate-projected sum rules and find a D + -D − mass splitting of about −15 MeV at nuclear saturation density.

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“…Recent approaches based on unitarized coupled-channels methods have proven to be very successful in describing the existing experimental data in the charmed [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25] and beauty baryonic sectors [26,27]. Most of these models emerge as the theoretical effort extends from the strange to charmed and beauty sectors, partially motivated by the parallelism between the Λ(1405) and the Λ c (2595) as well as the Λ b (5912) states.…”

Section: Introductionmentioning

confidence: 99%

Compositeness of the strange, charm, and beauty odd parityΛstates

et al. 2015

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We study the dependence on the quark mass of the compositeness of the lowest-lying odd parity hyperon states. Thus, we pay attention to Λ−like states in the strange, charm and beauty, sectors which are dynamically generated using a unitarized meson-baryon model. In the strange sector we use an SU(6) extension of the Weinberg-Tomozawa meson-baryon interaction, and we further implement the heavy-quark spin symmetry to construct the meson-baryon interaction when charmed or beauty hadrons are involved. In the three examined flavor sectors, we obtain two J P = 1/2 − and one J P = 3/2 − Λ states. We find that the Λ states which are bound states (the three Λ b ) or narrow resonances (one Λ(1405) and one Λc(2595)) are well described as molecular states composed of s-wave meson-baryon pairs. The

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Open-charm mesons in nuclear matter at finite temperature beyond the zero-range approximation

Cited by 35 publications

References 114 publications

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

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

Dmeson mass increase by restoration of chiral symmetry in nuclear matter

Compositeness of the strange, charm, and beauty odd parityΛstates

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