Kaons and antikaons in strong magnetic fields

Mishra, Amruta; Singh, Anuj Kumar; Rawat, Neeraj Singh; Aman, Pratik

doi:10.1140/epja/i2019-12783-5

Cited by 19 publications

(26 citation statements)

References 70 publications

(109 reference statements)

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“…[67]. The magnetic induced decay width of higher charmonium states into lower charmonium states are calculated with the joint approach of chiral model and 3 P 0 model [68]. In this work, author observed appreciable magnetic field effects in the cold nuclear matter .…”

Section: Introductionmentioning

confidence: 75%

“…In [68], the magnetic field induced decay width of these four charmonium states have been calculated by considering the in-medium masses of the charmonia as well as D andD mesons in the combined approach of chiral SU(3) model and 3 P 0 model at zero temperature η=0 η=0.5 T=0 T=100 T=0 T=100 eB/m 2 π ρ 0 4ρ 0 ρ 0 4ρ 0 ρ 0 4ρ 0 ρ 0 4ρ 0 only, whereas as discussed above in details we calculation are done at finite temperature which is important from heavy-ion collisions point of view.…”

Section: In-medium Decay Width Of Higher Charmonium Statesmentioning

confidence: 99%

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Analysis of pseudoscalar and scalar D mesons and charmonium decay width in hot magnetized asymmetric nuclear matter

Kumar

2020

Phys. Rev. C

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In this article, we calculate the mass shift and decay constant of isospin averaged pseudoscalar (D + ,D 0 ) and scalar (D + 0 ,D 0 0 ) mesons by the magnetic field induced quark and gluon condensates at finite density and temperature of asymmetric nuclear matter. We have calculated the in-medium chiral condensates from the chiral SU(3) mean field model and subsequently used these condensates in QCD Sum Rules (QCDSR) to calculate the effective mass and decay constant of D mesons.Consideration of external magnetic field effects in hot and dense nuclear matter lead to appreciable modification in the masses and decay constants of D mesons. Furthermore, we also studied the effective decay width of higher charmonium states (ψ(3686), ψ(3770), χ c 0 (3414), χ c 2 (3556)) as a by-product by using 3 P 0 model which can have an important impact on the yield of J/ψ mesons.The results of present work will be helpful to understand the experimental observables of the heavy ion colliders which aim to produce matter at finite density and moderate temperature.

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Section: Introductionmentioning

confidence: 75%

Section: In-medium Decay Width Of Higher Charmonium Statesmentioning

confidence: 99%

Analysis of pseudoscalar and scalar D mesons and charmonium decay width in hot magnetized asymmetric nuclear matter

Kumar

2020

Phys. Rev. C

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“…The model follows the concepts of broken scale invariance and non-linear realization of chiral symmetry. The Lagrangian density of chiral SU(3) model with mean field approximation can be inscribed as [6]…”

Section: The Hadronic Chiral 𝑆𝑈 (3) Modelmentioning

confidence: 99%

“…The effect of magnetic field in number and scalar density of protons comes into picture through Landau energy levels, whereas in neutrons the contributions come from the anomalous magnetic moment [7]. The expressions for number and scalar density of proton and neutron are defined as [6]…”

Section: The Hadronic Chiral 𝑆𝑈 (3) Modelmentioning

confidence: 99%

Effect of magnetic field on kaon and antikaon in neutron star matter

Kumari¹

2022

Proceedings of the European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2021)

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Medium modification in the energies of kaon and antikaon in strongly magnetized neutron star matter are explored using the chiral SU(3) model. The parameters used in this calculation are fitted with nuclear matter saturation properties and the vacuum masses of baryons. We have investigated the probability of antikaon condensation in neutron star with charge neutrality and 𝛽−equilibrium condition. Considering the effect of strong magnetic field in present study, it is observed that the possibility of antikaon condensation almost diminish at large magnetic field strength in neutron star matter.

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“…We calculate the inmedium masses of K andK mesons at finite temperatures in strange hadronic matter and the decay width of φ meson. 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].…”

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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Kaons and antikaons in strong magnetic fields

Cited by 19 publications

References 70 publications

Analysis of pseudoscalar and scalar D mesons and charmonium decay width in hot magnetized asymmetric nuclear matter

Analysis of pseudoscalar and scalar D mesons and charmonium decay width in hot magnetized asymmetric nuclear matter

Effect of magnetic field on kaon and antikaon in neutron star matter

ϕ meson mass and decay width in strange hadronic matter

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