INVESTIGADORES
DE FLORIAN Daniel Enrique
artículos
Título:
Next-to-next-to-Leading Logarithmic Corrections at Small Transverse Momentum in Hadronic Collisions
Autor/es:
DANIEL DE FLORIAN; MASSIMILIANO GRAZZINI
Revista:
PHYSICAL REVIEW LETTERS
Editorial:
AMER PHYSICAL SOC
Referencias:
Año: 2000 vol. 85 p. 4678 - 4678
ISSN:
0031-9007
Resumen:
We study the region of small transverse momenta in qq ̄- and gg-initiated processes with no colored particle detected in the final state. We present the universal expression of the O(as^2) logarithmically enhanced contributions up to next-to-next-to-leading-order logarithmic accuracy. From there we extract the coefficients that allow the resummation of the large logarithmic contributions. We find that the coefficient known in the literature as B(2) is process dependent, since it receives a hard contamination from the one-loop correction to the leading-order subprocess. We present the general result of B(2) for both quark and gluon channels.
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