Measurements of the electric and magnetic form factors of the proton from Q2=1.75 to 8.83 (GeV/c)2.
نویسندگان
چکیده
T h e p r o to n elast ic electr ic a n d m a g n e tic fo r m factors, G E M a n d G ’b fP ( Q 2 ) , h a v e b e e n s e p a r a te ly m e a s u r e d in th e r a n g e Q ” = 1 .7 5 to 8 .8 3 ( G e V /c)2, m o r e th a n doub l i ng th e Q 3 r a n g e o f p rev ious d a ta . Sca led by th e d ipo le fit, G o ( Q 2 ) , th e resul ts fo r G n lp(Q 2 ) //+ G ~ ( Q 2 ) d ec rease s m o o thly f rom 1 .0 5 to 0 .9 1 , wh i le G ~ p ( Q ~ ) lcdQ ~ ) is consistent wi th unity. Compar i sons a r e m a d e to Q C D S u m L -eRu le , d iquark , const i tuent qua rk , a n d V M D m o d e ls, n o n e o f whic ,h a g r e e with al l o f th e n e w d a ta . T h e ra tio Q 2 F 2 /Fl a p p r o a c h e s a constant va lue fo r Q 2 > 3 ( G e V /c)2.
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ورودعنوان ژورنال:
- Physical review. D, Particles and fields
دوره 50 9 شماره
صفحات -
تاریخ انتشار 1992