scholarly journals Electromagnetic form factors of octet baryons with the nonlocal chiral effective theory

2020 ◽  
Vol 102 (5) ◽  
Author(s):  
Mingyang Yang ◽  
P. Wang
Keyword(s):  
Form Factors ◽  
Effective Theory ◽  
Electromagnetic Form Factors ◽  
Octet Baryons

scholarly journals Electromagnetic form factors of the SU(3) octet baryons in the semibosonized SU(3) Nambu–Jona-Lasinio model

1996 ◽  
Vol 53 (7) ◽  
pp. 4013-4029 ◽  
Author(s):  
Hyun-Chul Kim ◽  
Andree Blotz ◽  
Maxim V. Polyakov ◽  
Klaus Goeke
Keyword(s):  
Form Factors ◽  
Electromagnetic Form Factors ◽  
Octet Baryons

scholarly journals Electromagnetic form factors of octet baryons in QCD

2013 ◽  
Vol 723 (1-3) ◽  
pp. 145-155 ◽  
Author(s):  
T.M. Aliev ◽  
K. Azizi ◽  
M. Savcı
Keyword(s):  
Form Factors ◽  
Electromagnetic Form Factors ◽  
Octet Baryons

scholarly journals Nucleon Electromagnetic Structure from Lattice QCD

2020 ◽  
Vol 15 ◽  
pp. 31
Author(s):  
C. Alexandrou ◽  
G. Koutsou ◽  
H. Neff ◽  
J. W. Negele ◽  
W. Schroers ◽  
...  
Keyword(s):  
Lattice Qcd ◽  
Momentum Transfer ◽  
Magnetic Moment ◽  
Qualitative Agreement ◽  
Pion Mass ◽  
Form Factors ◽  
Effective Theory ◽  
Electromagnetic Form Factors ◽  
Electromagnetic Structure ◽  
Nucleon Magnetic Moment

We present an evaluation of nucleon to Δ electromagnetic form factors within Lattice QCD. The EMR and CMR ratios are calculated both in the quenched theory and using two degenerate flavors of dynamical Wilson fermions. We obtain values in qualitative agreement to experiment. In addition, we evaluate the isovector Sachs electromagnetic form factors of the nucleon both in the quenched and unquenched theory for momentum transfer squared in the range between 0.1 and 2 GeV2. The nucleon magnetic moment and r.m.s. radii are obtained using chiral effective theory to extrapolate to the physical pion mass.

scholarly journals Hyperon electromagnetic form factors in the timelike region

2021 ◽  
Vol 103 (1) ◽  
Author(s):  
Johann Haidenbauer ◽  
Ulf-G. Meißner ◽  
Ling-Yun Dai
Keyword(s):  
Form Factors ◽  
Electromagnetic Form Factors ◽  
Timelike Region

scholarly journals Consistent treatment of rapidity divergence in soft-collinear effective theory

2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
Junegone Chay ◽  
Chul Kim
Keyword(s):  
Heavy Quark ◽  
Soft Mode ◽  
Form Factors ◽  
Effective Theory ◽  
Large Rapidity ◽  
Soft Modes ◽  
Heavy Quark Mass ◽  
Soft Collinear Effective Theory ◽  
Matching Procedure ◽  
Consistent Treatment

Abstract In soft-collinear effective theory, we analyze the structure of rapidity divergence due to the collinear and soft modes residing in disparate phase spaces. The idea of an effective theory is applied to a system of collinear modes with large rapidity and soft modes with small rapidity. The large-rapidity (collinear) modes are integrated out to obtain the effective theory for the small-rapidity (soft) modes. The full SCET with the collinear and soft modes should be matched onto the soft theory at the rapidity boundary, and the matching procedure becomes exactly the zero-bin subtraction. The large-rapidity region is out of reach for the soft mode, which results in the rapidity divergence. The rapidity divergence in the collinear sector comes from the zero-bin subtraction, which ensures the cancellation of the rapidity divergences from the soft and collinear sectors. In order to treat the rapidity divergence, we construct the rapidity regulators consistently for all the modes. They are generalized by assigning independent rapidity scales for different collinear directions. The soft regulator incorporates the correct directional dependence when the innate collinear directions are not back-to-back, which is discussed in the N-jet operator. As an application, we consider the Sudakov form factor for the back-to-back collinear current and the soft-collinear current, where the soft rapidity regulator for a soft quark is developed. We extend the analysis to the boosted heavy quark sector and exploit the delicacy with the presence of the heavy quark mass. We present the resummed results of large logarithms in the form factors for various currents with the light and the heavy quarks, employing the renormalization group evolution on the renormalization and the rapidity scales.

scholarly journals Covariant nucleon electromagnetic form factors from the Goldstone-boson-exchange quark model

2001 ◽  
Vol 511 (1) ◽  
pp. 33-39 ◽  
Author(s):  
R.F. Wagenbrunn ◽  
S. Boffi ◽  
W. Klink ◽  
W. Plessas ◽  
M. Radici
Keyword(s):  
Quark Model ◽  
Goldstone Boson ◽  
Form Factors ◽  
Electromagnetic Form Factors ◽  
Boson Exchange

The electromagnetic form factors of the proton and quantum chromodynamics

1978 ◽  
Vol 74 (1-2) ◽  
pp. 105-107 ◽  
Author(s):  
Robert Coquereaux ◽  
Eduardo de Rafael
Keyword(s):  
Quantum Chromodynamics ◽  
Form Factors ◽  
Electromagnetic Form Factors

scholarly journals Electric form factors of the octet baryons from lattice QCD and chiral extrapolation

2014 ◽  
Vol 90 (3) ◽  
Author(s):  
P. E. Shanahan ◽  
R. Horsley ◽  
Y. Nakamura ◽  
D. Pleiter ◽  
P. E. L. Rakow ◽  
...  
Keyword(s):  
Lattice Qcd ◽  
Form Factors ◽  
Chiral Extrapolation ◽  
Octet Baryons
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