Charmonia and bottomonia in asymmetric magnetized hot nuclear matter

Kumar, Rajesh; Kumar, Arvind

doi:10.1088/1674-1137/43/12/124109

Cited by 15 publications

(11 citation statements)

References 105 publications

(246 reference statements)

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“…The non-linear coupled equations of motion of the meson fields are obtained by solving the Euler-Lagrange equations using the total Lagrangian [Eq. ( 1)] [20,78] and are given as…”

Section: Modelmentioning

confidence: 99%

“…For instance, using the combined approach of chiral model and QCD sum rules the in-medium mass and decay constant of scalar, pseudoscalar, vector, and axial-vector D mesons were calculated with [21,73] and without incorporating the effect of the external magnetic field [74][75][76][77]. Using the same combination, the medium modified properties of charmonia and bottomonia were studied in the hot magnetized asymmetric nuclear matter [20,34,78].…”

Section: Introductionmentioning

confidence: 99%

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$η$ mesons in hot magnetized nuclear matter

Kumar¹,

Kumar²

2021

Preprint

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The ηN interactions are investigated in the hot magnetized asymmetric nuclear matter using chiral SU(3) model and chiral perturbation theory (ChPT). In the chiral model, the in-medium properties of η-meson are calculated by the medium modified scalar densities under the influence of an external magnetic field. Further, in the combined approach of chiral model and ChPT, off-shell contributions of ηN interactions are evaluated from the ChPT effective ηN Lagrangian, and the in-medium effect of scalar densities are incorporated from the chiral SU(3) model. We observe a significant effect of magnetic field on the in-medium mass and optical potential of η meson. We observe a deeper mass-shift in the combined approach of ChPT and chiral model compared to the effect of solo chiral SU(3) model. In both approaches, no additional mass-shift is observed due to the uncharged nature of η mesons in the presence of magnetic field.

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“…The non-linear coupled equations of motion of the meson fields are obtained by solving the Euler-Lagrange equations using the total Lagrangian [Eq. ( 1)] [20,78] and are given as…”

Section: Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

$η$ mesons in hot magnetized nuclear matter

Kumar¹,

Kumar²

2021

Preprint

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“…Under a magnetic field, the nuclear matter is magnetized, and its property including gluon condensates should be modified. Quarkonia in isospin symmetric or asymmetric magnetized nuclear matter were studied by effective models [90][91][92] and QCD sum rules [93][94][95][96]. In particular, the studies of in-medium partial decay width, such as charmonia to D D and bottomonia to B B, might be interesting as an observable, as emphasized in Refs.…”

Section: Quarkonia In Magnetized Dense Mattermentioning

confidence: 99%

A review of quarkonia under strong magnetic fields

Iwasaki,

Oka,

Suzuki

2021

Preprint

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We review the properties of quarkonia under strong magnetic fields. The main phenomena are (i) mixing between different spin eigenstates, (ii) quark Landau levels and deformation of wave function, (iii) modification of QQ potential, and (iv) the motional Stark effect. For theoretical approaches, we review (i) constituent quark models, (ii) effective Lagrangians, (iii) QCD sum rules, and (iv) holographic approaches.

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“…The chiral model is a nonperturbative hadron based model to describe the in-medium properties of hadronic matter [5][6][7]59,[69][70][71][72][73][74][75][76][77][78][79]. It has also been applied to study the effect of a magnetic field on the in-medium properties of quarkonia [10,74] and open charm mesons [68,79]. To study the KK loop contributions in the φ meson decay, we use the effective Lagrangian of the φKK interactions and solve the loop integral by using regularization techniques [19,80].…”

Section: Introductionmentioning

confidence: 99%

ϕ meson mass and decay width in strange hadronic matter

Kumar

2020

Phys. Rev. C

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The in-medium mass and decay width of the φ meson in hot asymmetric strange hadronic matter is calculated using an effective Lagrangian approach for the φKK interaction. The in-medium contributions of the KK loop to the φ meson self-energy are computed by the medium modified kaon and antikaon mass, which is evaluated using the chiral SU(3) model. To deal with the ultraviolet divergence, we regularize the loop integral of self-energy with a dipole form factor, and present the results for the range of cutoff mass c = 1-4 GeV. In chiral model calculations, for strange matter, we find that the mass of kaons and antikaons decreases with the increase in baryonic density, whereas the finite temperature causes an increase in the mass. We observed that the in-medium φ meson mass decreases slowly with baryonic density whereas the decay width increases rapidly. The results in the present investigation support a result in the literature which indicates a small downward shift in mass and a large broadening in the decay width. In the asymmetric strange hadronic matter, the study of the φ mesons can be relevant for compressed strange baryonic matter. The experimental observables such as dilepton spectra can perhaps be extracted from experiments in the future Facility for Antiproton and Ion Research (FAIR) facility at GSI.

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Charmonia and bottomonia in asymmetric magnetized hot nuclear matter

Cited by 15 publications

References 105 publications

$η$ mesons in hot magnetized nuclear matter

$η$ mesons in hot magnetized nuclear matter

A review of quarkonia under strong magnetic fields

ϕ meson mass and decay width in strange hadronic matter

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