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The Form Factors of the Nucleons: Present Status - Fisica

The Form Factors of the Nucleons: Present Status - Fisica

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Quark Flavor separation<br />

Assume that hadron current: ,with<br />

e u and e d <strong>the</strong> charge <strong>of</strong> <strong>the</strong> up and down quarks<br />

and isospin symmetry:<br />

Fd<br />

2n<br />

Fu<br />

1n<br />

Fu<br />

2n<br />

Fd<br />

1p<br />

Fd<br />

2p<br />

<strong>The</strong>n <strong>the</strong> Pauli and Dirac form factors <strong>of</strong> <strong>the</strong> dressed quarks<br />

in <strong>the</strong> proton are (with related relations for <strong>the</strong> neutron):<br />

F<br />

u<br />

1p<br />

F<br />

u<br />

2p<br />

<br />

<br />

2F<br />

1p<br />

2F<br />

2p<br />

<br />

<br />

F<br />

1n<br />

F<br />

2n<br />

Fd<br />

1n<br />

Fu<br />

,<br />

1p<br />

Fu<br />

,<br />

2p<br />

F<br />

d<br />

1p<br />

F<br />

d<br />

2p<br />

F<br />

2p<br />

See for example: Cates,deJager,Riordan,Wojtsekhowski (2011),<br />

Rohrmoser, Choi and Plessas, (2011), Wilson,Cloet,Chang and Roberts,<br />

(2012), Cloet and Miller (2012)<br />

2/17/2013 C.F. Perdrisat SAEMP Trento 2013<br />

27<br />

<br />

<br />

F<br />

1p<br />

<br />

<br />

<br />

<br />

2F<br />

1n<br />

2F<br />

2n

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