Small x behaviour of the chirally - odd
نویسندگان
چکیده
The small x behaviour of the structure function h1(x,Q ) is studied within the leading logarithmic approximation of perturbative QCD. There are two contributions relevant at small x. The leading one behaves like ( 1 x ) i.e. it is just a constant in this limit. The second contribution, suppressed by one power of x, includes the terms summed by the GLAP equation. Thus for h1(x,Q ) the GLAP asymptotics and Regge asymptotics are completely different, making h1(x,Q ) quite an interesting quantity for the study of small x physics. Dedicated to Professor Wojciech Królikowski. On leave of absence from N. Copernicus Astronomical Center, Polish Academy of Sciences, Warsaw, Poland. On leave of absence from Soltan Institute for Nuclear Studies, Warsaw, Poland.
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