High-Precision Determination of the Electric and Magnetic Form Factors of the Proton (CROSBI ID 177516)
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Podaci o odgovornosti
Bernauer, J. ; Achenbach, P. ; Ayerbe Gayoso, C. ; Böhm, R. ; Bosnar, Damir ; Debenjak, L. ; Distler, M.O. ; Doria, L. ; Esser, A. ; Fonvieille, H. ; Friedrich, J.M. ; Friedrich, J. ; Gómez Rodríguez de la Paz, M. ; Makek, Mihael ; Merkel, H. ; Middleton, D.G. ; Müller, U. ; Nungesser, L. ; Pochodzalla, J. ; Potokar, M. ; Sánchez Majos, S. ; Schlimme, B.S. ; Širca, S. ; Walcher, Th. ; Weinriefer, M.
engleski
High-Precision Determination of the Electric and Magnetic Form Factors of the Proton
New precise results of a measurement of the elastic electron-proton scattering cross section performed at the Mainz Microtron MAMI are presented. About 1400 cross sections were measured with negative four-momentum transfers squared up to Q2 = 1 (GeV/c)2 with statistical errors below 0.2%. The electric and magnetic form factors of the proton were extracted by fits of a large variety of form factor models directly to the cross sections. The form factors show some features at the scale of the pion cloud. The charge and magnetic radii are determined to be <rE2>1/2=0.879(5)stat(4)syst(2)model(4)group fm and <rM2>1/2=0.777(13)stat(9)syst(5)model(2)group fm.
elastic electron scattering; proton electromagnetic form factors
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Podaci o izdanju
105
2010.
242001-1-242001-4
objavljeno
0031-9007
10.1103/PhysRevLett.105.242001
