NNLO calculation of DIS; Precision determination of the strong coupling constant, extraction of the gluon density, and comments on "hidden" gluinos

Authors
Santiago, J Yndurain, FJ
Citation
J. Santiago et Fj. Yndurain, NNLO calculation of DIS; Precision determination of the strong coupling constant, extraction of the gluon density, and comments on "hidden" gluinos, NUCL PH B-P, 86, 2000, pp. 69-73
Citations number
34
Categorie Soggetti
Physics
Journal title
NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS
ISSN journal
09205632 → ACNP
Volume
86
Year of publication
2000
Pages
69 - 73
Database
ISI
SICI code
0920-5632(200006)86:<69:NCODPD>2.0.ZU;2-Z
Abstract
Calculations of deep inelastic processes (DIS) to next-to-next to leading o rder are discussed. Fitting ep experiment in the range 2.5 less than or equ al to Q(2) less than or equal to 230 GeV2, we find the coupling alpha(s)(M- Z(2)) = 0.1172 +/- 0.0024. We also get the gluon density xG(x, Q(2) similar or equal to 10 GeV2) = 0.51 x(-0.44)(1 - x)(8.1), and negative evidence fo r the existence of light gluinos.