Moments of the proton F2 structure function at low Q2 -: art. no. 094008

被引:50
作者
Armstrong, CS [1 ]
Ent, R
Keppel, CE
Liuti, S
Niculescu, G
Niculescu, I
机构
[1] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA
[2] Hampton Univ, Hampton, VA 23668 USA
[3] Univ Virginia, Charlottesville, VA 22901 USA
[4] Ist Nazl Fis Nucl, Sez Roma Tre, Rome, Italy
[5] Ohio Univ, Athens, OH 45071 USA
[6] George Washington Univ, Washington, DC 20052 USA
关键词
D O I
10.1103/PhysRevD.63.094008
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We investigate the Q(2) dependence of inclusive electron-proton scattering F-2 structure function data in both the nucleon resonance region and the deep inelastic region, at momentum transfers below 5 (GeV/c)(2). From these data we construct moments of F-2, down to momentum transfers of Q(2)approximate to0.1 (GeV/c)(2). The second moment is only slowly varying with Q(2) down to Q(2)approximate to1 (GeV/c)(2), which is a reflection of duality. Below Q(2) of 1 (GeV/c)(2), the Q(2) dependence of the moments is predominantly governed by the elastic contribution, whereas the inelastic channels still seem governed by local duality.
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