Download or read book Proton and Deuteron F2 Structure Function at Low Q2 written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements of the proton and deuteron F2 structure functions are presented. The data, taken at Jefferson Lab Hall C, span the four-momentum transfer range 0.06Qsup2/sup2.8GeVsup2/sup and Bjorken x values from 0.009 to 0.45, thus extending the knowledge of Fsub2/sub to low values of Qsup2/sup at low x. Next-to-next-to-leading-order calculations using recent parton distribution functions start to deviate from the data for Qsup2/sup2 GeVsup2/sup at the low and high x values. Down to the lowest value of Qsup2/sup, the structure function is in good agreement with a parametrization of Fsub2/sub based on data that have been taken at much higher values of Qsub2/sub or much lower values of x, and which are constrained by data at the photon point. The ratio of the deuteron and proton structure functions at low x remains well described by a logarithmic dependence on Qsup2