Meson's correlation functions in a nuclear medium

Park, Chanyong

doi:10.1016/j.physletb.2016.06.043

Cited by 2 publications

(4 citation statements)

References 48 publications

(52 reference statements)

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“…For later use, we summarize the equations of motion for mesons [26,33]. After the Fourier mode expansion, the mode function of ρ-meson should satisfy…”

Section: Holographic Description For a Nuclear Mediummentioning

confidence: 99%

“…together with imposing 0 = ∂ m āa m , they are decoupled and the longitudinal mode of the axial-vector represents another pseudoscalar field, χ. Their spectra and form factors in the nuclear medium have already been studied in [26,33].…”

Section: Holographic Description For a Nuclear Mediummentioning

confidence: 99%

“…On this background corresponding a nuclear medium, various meson's and nucleon's spectra have been studied [20,21,22,23,24,25,26,27,28,29,30,31,32]. These quantities are crucially associated with the twopoint correlation function of nucleon and meson [33]. In order to understand further a nuclear medium, it is important to know the interaction between nucleons and mesons.…”

Section: Introductionmentioning

confidence: 99%

“…and p indicate the energy and momentum of q-meson with an isospin charge (i). Above π and χ indicate fluctuations of the scalar field and longitudinal component of the axial-vector, respectively.Solving above equations with the proper boundary conditions, Dirichlet boundary condition at the asymptotic boundary and Neumann boundary condition at the IR cutoff denoted by z IR , determines the mass of various mesons[25,26].Note that the above mode functions should be appropriately normalized to define form factors.From the dual gravity, ρ and a 1 -mesons have the following normalization[33] …”

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confidence: 99%

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Nucleon form factors in the nuclear medium

Park

Lee

2018

Int. J. Mod. Phys. A

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By using the AdS/CFT correspondence, we investigate various form factors between nucleons and mesons in a nuclear medium. In order to describe a nuclear medium holographically, we take into account the thermal charged AdS geometry with an appropriate IR cutoff. After introducing an anomalous dimension as a free parameter, we investigate how the nucleon's mass is affected by the change of the anomalous dimension. Moreover, we study how the form factors of nucleons rely on the properties of the nuclear medium. We show that in a nuclear medium with different numbers of proton and neutron, the degenerated nucleon form factor in the vacuum is split to four different values depending on the isospin charges of nucleon and meson. *

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“…For later use, we summarize the equations of motion for mesons [26,33]. After the Fourier mode expansion, the mode function of ρ-meson should satisfy…”

Section: Holographic Description For a Nuclear Mediummentioning

confidence: 99%

Section: Holographic Description For a Nuclear Mediummentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Nucleon form factors in the nuclear medium

Park

Lee

2018

Int. J. Mod. Phys. A

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Nucleon’s Axial-Vector Form Factor in the Hard-Wall AdS/QCD Model

Mamedov¹,

Şirvanlı²,

Atayev³

et al. 2017

Int J Theor Phys

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The axial-vector form factor of the nucleons is considered in the framework of hard-wall model of holographic QCD. A new interaction term between the bulk gauge and matter fields was included into the interaction Lagrangian. We obtain the axial-vector form factor of nucleons in the boundary QCD from the bulk action using AdS/CFT correspondence. The momentum square dependence of the axial-vector form factor is analysed numerically. I. INTRODUCTIONThe weak processes such as β decay n → p + e − +ν e , µ capture µ − + p = ν µ + n and so on proceed via vector and axial-vector current of the nucleons. Form factors, which describe interaction vertex in these processes, are called the axial-vector form factors of the nucleons and were studied in the field theory framework. After the appearance of the QCD models based on AdS/CFT correspondence [1][2][3][4], which were called holographic QCD or AdS/QCD models [5][6][7][8][9][10][11], these form factors were considered in the framework of these models as well. The AdS/QCD models such as hard-wall and soft-wall models were applied to the calculation of mass spectra, couplings and decay constants, form factors etc, which can be measured in the experiment [12][13][14][15][16][17][18][19][20][21]. These models * Electronic address: sh.

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Meson's correlation functions in a nuclear medium

Cited by 2 publications

References 48 publications

Nucleon form factors in the nuclear medium

Nucleon form factors in the nuclear medium

Nucleon’s Axial-Vector Form Factor in the Hard-Wall AdS/QCD Model

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