We compare different procedures for combining fixed-order tree-level matrix-element generators with parton showers. We use the case of W-production at the Tevatron and the LHC to compare different implementations of the so-called CKKW and MLM schemes using different matrix-element generators and different parton cascades. We find that although similar results are obtained in all cases, there are important differences.
Comparative study of various algorithms for the merging of parton showers and matrix elements in hadronic collisions / J. Alwall; S. Höche; F. Krauss; N. Lavesson; L. Lönnblad; F. Maltoni; M.L. Mangano; M. Moretti; C.G. Papadopoulos; F. Piccinini; S. Schumann; M. Treccani; J. Winter; M. Worek. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - ELETTRONICO. - 53:3(2007), pp. 473-500. [10.1140/epjc/s10052-007-0490-5]
Comparative study of various algorithms for the merging of parton showers and matrix elements in hadronic collisions
F. Maltoni;
2007
Abstract
We compare different procedures for combining fixed-order tree-level matrix-element generators with parton showers. We use the case of W-production at the Tevatron and the LHC to compare different implementations of the so-called CKKW and MLM schemes using different matrix-element generators and different parton cascades. We find that although similar results are obtained in all cases, there are important differences.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
