Pion mass dependence of the nucleon form factors of the energy-momentum tensor in the chiral quark-soliton model

2007 ◽  
Vol 75 (5) ◽  
Author(s):  
K. Goeke ◽  
J. Grabis ◽  
J. Ossmann ◽  
P. Schweitzer ◽  
A. Silva ◽  
...  
Keyword(s):  
Energy Momentum Tensor ◽  
Pion Mass ◽  
Form Factors ◽  
Momentum Tensor ◽  
Mass Dependence ◽  
Soliton Model ◽  
Nucleon Form Factors ◽  
Pion Mass Dependence

scholarly journals Nucleon form factors of the energy-momentum tensor in the chiral quark-soliton model

2007 ◽  
Vol 75 (9) ◽  
Author(s):  
K. Goeke ◽  
J. Grabis ◽  
J. Ossmann ◽  
M. V. Polyakov ◽  
P. Schweitzer ◽  
...  
Keyword(s):  
Energy Momentum Tensor ◽  
Form Factors ◽  
Momentum Tensor ◽  
Soliton Model ◽  
Nucleon Form Factors

scholarly journals The nucleon form-factors of the energy–momentum tensor in the Skyrme model

2007 ◽  
Vol 794 (1-2) ◽  
pp. 87-114 ◽  
Author(s):  
C. Cebulla ◽  
K. Goeke ◽  
J. Ossmann ◽  
P. Schweitzer
Keyword(s):  
Energy Momentum Tensor ◽  
Form Factors ◽  
Momentum Tensor ◽  
Skyrme Model ◽  
Nucleon Form Factors

scholarly journals In-medium modified energy-momentum tensor form factors

2014 ◽  
Vol 29 ◽  
pp. 1460237
Author(s):  
Ju-Hyun Jung ◽  
Ulugbek Yakhshiev ◽  
Hyun-Chul Kim
Keyword(s):  
Energy Momentum Tensor ◽  
Form Factors ◽  
Momentum Tensor ◽  
Nuclear Medium ◽  
Tensor Form ◽  
Soliton Model ◽  
Chiral Soliton ◽  
Surrounding Environment ◽  
Chiral Soliton Model

In this talk, we report a recent investigation on the energy-momentum tensor form factors of the nucleon in nuclear medium, based on the framework of the in-medium modified chiral soliton model. The model was constructed by taking into account the influence of the surrounding environment to the mesonic sector (π-, ρ- and ω-meson properties). We briefly discuss the results of the energy-momentum tensor form factors.

scholarly journals Pion mass dependence of the nucleon mass in the chiral quark soliton model

2006 ◽  
Vol 27 (1) ◽  
pp. 77-90 ◽  
Author(s):  
K. Goeke ◽  
J. Ossmann ◽  
P. Schweitzer ◽  
A. Silva
Keyword(s):  
Pion Mass ◽  
Nucleon Mass ◽  
Mass Dependence ◽  
Soliton Model ◽  
Pion Mass Dependence

scholarly journals Nucleon’s energy–momentum tensor form factors in light-cone QCD

2020 ◽  
Vol 80 (2) ◽  
Author(s):  
K. Azizi ◽  
U. Özdem
Keyword(s):  
Perturbation Theory ◽  
Lattice Qcd ◽  
Chiral Perturbation Theory ◽  
Light Cone ◽  
Energy Momentum Tensor ◽  
Form Factors ◽  
Momentum Tensor ◽  
Tensor Form ◽  
Chiral Perturbation ◽  
Theoretical Predictions

Abstract We use the energy–momentum tensor (EMT) current to compute the EMT form factors of the nucleon in the framework of the light cone QCD sum rule formalism. In the calculations, we employ the most general form of the nucleon’s interpolating field and use the distribution amplitudes (DAs) of the nucleon with two sets of the numerical values of the main input parameters entering the expressions of the DAs. The directly obtained results from the sum rules for the form factors are reliable at $$ Q^2\ge 1$$Q2≥1 GeV$$^2 $$2: to extrapolate the results to include the zero momentum transfer squared with the aim of estimation of the related static physical quantities, we use some fit functions for the form factors. The numerical computations show that the energy–momentum tensor form factors of the nucleon can be well fitted to the multipole fit form. We compare the results obtained for the form factors at $$ Q^2=0 $$Q2=0 with the existing theoretical predictions as well as experimental data on the gravitational form factor d$$_1^q(0)$$1q(0). For the form factors M$$_2^q (0)$$2q(0) and J$$^q(0)$$q(0) a consistency among the theoretical predictions is seen within the errors: our results are nicely consistent with the Lattice QCD and chiral perturbation theory predictions. However, there are large discrepancies among the theoretical predictions on d$$_1^q(0)$$1q(0). Nevertheless, our prediction is in accord with the JLab data as well as with the results of the Lattice QCD, chiral perturbation theory and KM15-fit. Our fit functions well define most of the JLab data in the interval $$ Q^2\in [0,0.4]$$Q2∈[0,0.4] GeV$$^2 $$2, while the Lattice results suffer from large uncertainties in this region. As a by-product, some mechanical properties of the nucleon like the pressure and energy density at the center of nucleon as well as its mechanical radius are also calculated and their results are compared with other existing theoretical predictions.

scholarly journals Pion mass dependence of the HVP contribution to muon g – 2

2018 ◽  
Vol 175 ◽  
pp. 06010
Author(s):  
Maarten Golterman ◽  
Kim Maltman ◽  
Santiago Peris
Keyword(s):  
Perturbation Theory ◽  
Magnetic Moment ◽  
Anomalous Magnetic Moment ◽  
Pion Mass ◽  
Systematic Errors ◽  
Mass Dependence ◽  
Chiral Perturbation ◽  
Muon Anomalous Magnetic Moment ◽  
Chiral Extrapolation ◽  
Pion Mass Dependence

One of the systematic errors in some of the current lattice computations of the HVP contribution to the muon anomalous magnetic moment g – 2 is that associated with the extrapolation to the physical pion mass. We investigate this extrapolation assuming lattice pion masses in the range of 220 to 440 MeV with the help of two-loop chiral perturbation theory, and find that such an extrapolation is unlikely to lead to control of this systematic error at the 1% level. This remains true even if various proposed tricks to improve the chiral extrapolation are taken into account.

Nucleon form factors in the projected linear chiral soliton model

1988 ◽  
Vol 208 (1) ◽  
pp. 75-78 ◽  
Author(s):  
P. Alberto ◽  
E. Ruiz Arriola ◽  
M. Fiolhais ◽  
F. Grümmer ◽  
J.N. Urbano ◽  
...  
Keyword(s):  
Form Factors ◽  
Soliton Model ◽  
Chiral Soliton ◽  
Chiral Soliton Model ◽  
Nucleon Form Factors
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