Manual BOX

manual-BOX

User Manual: Pdf

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Preprint typeset in JHEP style - PAPER VERSION March 16, 2011POWHEG BOX @ rev. ***************************(release 1.0)The POWHEG BOX user manual:common featuresSimone AlioliDeutsches Elektronen-Synchrotron DESYPlatanenallee 6, D-15738 Zeuthen, GermanyE-mail: simone.alioli@desy.dePaolo NasonINFN, Sezione di Milano-Bicocca, Piazza della Scienza 3, 20126 Milan, ItalyE-mail: Paolo.Nason@mib.infn.itCarlo OleariUniversit`a di Milano-Bicocca and INFN, Sezione di Milano-BicoccaPiazza della Scienza 3, 20126 Milan, ItalyE-mail: Carlo.Oleari@mib.infn.itEmanuele ReInstitute for Particle Physics Phenomenology, Department of PhysicsUniversity of Durham, Durham, DH1 3LE, UKE-mail: emanuele.re@durham.ac.ukAbstract: This note documents the use of the package POWHEG BOX. In this document theuser will find a description of the general features of the package. Issues related to specificprocesses are discussed in dedicated manuals available in the corresponding folders.Keywords: POWHEG, Shower Monte Carlo, NLO.
Contents1. Introduction 12. Organization of the package 23. Modes of operation 33.1 The analysis routines 54. Input parameters 54.1 Mandatory parameters 64.2 Optional parameters 95. Special modes of operation 105.1 Weighted-event generation 105.1.1 Generation cut and Born suppression factor 115.2 The pdfreweight flag 135.3 The manyseeds flag 146. Counters and statistics 167. Random number generator 171. IntroductionThe POWHEG BOX program is a framework to implement Next-to-Leading-Order (NLO) cal-culations in Shower Monte Carlo (SMC) programs according to the POWHEG method. Anexplanation of the method and a detailed discussion of how the code is organized can befound in refs. [1, 2, 3]. The code is distributed according to the “MCNET GUIDELINESfor Event Generator Authors and Users” and can be found inhttp://powhegbox.mib.infn.it.The latest version of the package can be downloaded trough SVN:$ svn checkout --username anonymous --password anonymoussvn://powhegbox.mib.infn.it/trunk/POWHEG-BOXPrevious revisions are available using the [--revision n] option. Periodic releases ofthe code will be available in svn://powhegbox.mib.infn.it/tags.– 1 –

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