Form Factor;
Strong Interaction;
Interaction Dynamic;
Spectator Approximation;
Electromagnetic Form Factor;
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摘要:
The proton’s elastic electromagnetic form factors are calculated using an ansatz for the nucleon’s Poincaré covariant Faddeev amplitude that only retains scalar diquark correlations. A spectator approximation is employed for the current. On the domain of q2 accessible in modern precision experiments these form factors are a sensitive probe of nonperturbative strong interaction dynamics. The ratio of Pauli and Dirac form factors can provide realistic constraints on models of the nucleon and thereby assist in developing an understanding of nucleon structure.
机构:
Jozef Stefan Inst, Ljubljana, Slovenia
Univ Ljubljana, Dept Phys, Ljubljana 61000, SloveniaJohannes Gutenberg Univ Mainz, Inst Kernphys, D-55099 Mainz, Germany
机构:
Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USAThomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA
Burkert, V. D.
Elouadrhiri, L.
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Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA
Ctr Nucl Femtog, Newport News, VA USAThomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA
Elouadrhiri, L.
Girod, F. X.
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Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USAThomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA
Girod, F. X.
Lorce, C.
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Ecole Polytech, Inst Polytech Paris, CPHT, CNRS, F-91120 Palaiseau, FranceThomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA
Lorce, C.
Schweitzer, P.
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Univ Connecticut, Dept Phys, Storrs, CT 06269 USAThomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA
Schweitzer, P.
Shanahan, P. E.
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机构:
MIT, Ctr Theoret Phys, Cambridge, MA 02139 USAThomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA