Zobrazeno 1 - 10
of 120
pro vyhledávání: '"Riemersma S"'
Publikováno v:
Eur.Phys.J.C1:255-259,1998
The resummation of the $\alpha \ln^2(z)$ non-singlet contributions is performed for initial state QED corrections. As examples, the effect of the resummation on neutral-current deep-inelastic scattering and the $e^+ e^- \rightarrow \mu^+ \mu^-$ scatt
Externí odkaz:
http://arxiv.org/abs/hep-ph/9611214
Publikováno v:
Acta Phys.Polon.B28:577-583,1997
A brief overview is presented of recent developments concerning resummed small-x evolution, based upon the renormalization group equation. The non-singlet and singlet structure functions are discussed for both polarized and unpolarized deep-inelastic
Externí odkaz:
http://arxiv.org/abs/hep-ph/9610427
We present theoretical and experimental considerations pertaining to deeply inelastic heavy-flavour production at HERA. The various theoretical uncertainties in the cross section calculation are discussed. Cuts are imposed to determine the fraction o
Externí odkaz:
http://arxiv.org/abs/hep-ph/9609478
Autor:
Blümlein, J., Riemersma, S.
We perform a numerical study of the QCD corrections to the structure function $F_L(x,Q^2)$ in the HERA energy range. The $K$--factors are of $O(30%)$ and larger in parts of the kinematic range. The relative corrections to $F_L^{c\overline{c}}$ turn o
Externí odkaz:
http://arxiv.org/abs/hep-ph/9609394
Seven next-to-leading order QCD evolution programs are compared. The deviations of the results due to different theoretical prescriptions for truncating the perturbative series are clarified, and a numerical agreement between five codes of better tha
Externí odkaz:
http://arxiv.org/abs/hep-ph/9609400
Autor:
Laenen, E., Buza, M., Harris, B. W., Matiounine, Y., Migneron, R., Riemersma, S., Smith, J., van Neerven, W. L.
Deep-inelastic production of heavy quarks at HERA, especially charm, is an excellent signal to measure the gluon distribution in the proton at small $x$ values. By measuring various differential distributions of the heavy quarks this reaction permits
Externí odkaz:
http://arxiv.org/abs/hep-ph/9609351
Publikováno v:
Nucl.Phys.Proc.Suppl. 51C (1996) 97-105
The differences are discussed between various next-to-leading order prescriptions for the QCD evolution of parton densities and structure functions. Their quantitative impact is understood to an accuracy of 0.02\%. The uncertainties due to the freedo
Externí odkaz:
http://arxiv.org/abs/hep-ph/9609217
Publikováno v:
Nucl.Phys.Proc.Suppl. 51C (1996) 30-48
A survey is given of recent developments on the resummed small-$x$ evolution, in a framework based on the renormalization group equation, of non--singlet and singlet structure functions in both unpolarized and polarized deep--inelastic scattering. Th
Externí odkaz:
http://arxiv.org/abs/hep-ph/9608470
A brief survey is given of recent results on the resummation of leading small-x terms for unpolarized and polarized non--singlet and singlet structure function evolution.
Comment: 6 pages Latex, 2 eps-figures, additional style file procl.sty inc
Comment: 6 pages Latex, 2 eps-figures, additional style file procl.sty inc
Externí odkaz:
http://arxiv.org/abs/hep-ph/9607329
Autor:
Aurenche, P., Schuler, G. A., Bawa, A., Boudinov, E., Buijs, A., Cacciari, M., Corsetti, A., Da Silva, W., Dubinin, M., Engel, R., Erne, F., Field, J., Finch, A., Forshaw, J., Godbole, R., Guillet, J. Ph., Hou, S. R., Kapusta, F., Kennedy, B., Kienzle, M. N., Kraemer, M., Kroll, P., Laenen, E., Lehto, M., Lonnblad, L., Miller, D., Pancheri, G., Parisi, J., Perret-Gallix, D., Ranft, J., van Rhee, T., Riemersma, S., Serbo, V., Seymour, M. H., Shimizu, Y., Sjostrand, T., Soldner-Rembold, S., Stratmann, M., Tyapkin, I., Vogt, A., Ward, J., Wilkens, B., Wright, A., Zimin, N. I.
This report is an overview of the gamma-gamma physics capabilities of LEP2, and covers the following topics: structure functions, equivalent photon approximation, tagging conditions etc, soft and semihard physics, large-$p_t$ processes, heavy-quark p
Externí odkaz:
http://arxiv.org/abs/hep-ph/9601317