Changes between Initial Version and Version 1 of DecayChains


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Timestamp:
03/20/12 16:15:37 (8 years ago)
Author:
trac
Comment:

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  • DecayChains

    v1 v1  
     1
     2
     3== Decay Chains  ==
     4
     5
     6
     7=== People ===
     8   1. Johan Alwall
     9   1. Tim Stelzer
     10
     11=== Aim of the project ===
     12Allow MadGraph to specify decay chains of the type pp>(t>(W+>e+ve)b)(t~>(W->jj)b~).
     13
     14=== Tools ===
     15   * MadGraph
     16
     17=== Work ===
     18   * MadGraph:
     19      * Implementation of pruning of topologies to speed up process generation for many final state particles
     20      * Example: pp>(t>(w+>jj)b)(t~>(w->l-vl~)b~): 16 min 15 s with decay chains, 2 h 33 min without decay chains
     21      * Allow only specified decay chains. Give information on which resonances must be on-shell to MadEvent
     22      * Allow more than 9 external particles
     23   * MadEvent:
     24      * Read on-shell resonance information to generate only correct diagrams
     25      * Allow more than 9 external particles
     26
     27The implementation in MadGraph and MadEvent is completed, but needs to be tested with "real" physics. Still to do is:
     28   * Diagram drawing for more than 9 external particles
     29   * Allowing more than 10 external particles in MadGraph
     30
     31==== Physics results and papers writeup ====
     32To be decided
     33
     34-- Main.JohanAlwall - 31 Aug 2007