Commit 8c692c8e authored by Stefan Hoeche's avatar Stefan Hoeche
Browse files

documented decay selectors

parent b6a9fad5
......@@ -10,6 +10,7 @@ Sherpa provides the following selectors
@menu
* One particle selectors:: one particle selectors
* Two particle selectors:: two particle selectors
* Decay selectors:: decay selectors
* Jet finders:: cuts on QCD partons
* Universal selector:: user-defined cuts
* Minimum selector:: cuts that are inclusive for several selectors
......@@ -83,6 +84,40 @@ R separation
@end table
@node Decay selectors
@subsection Decay selectors
The selectors listed here implement cuts on the matrix element level,
based on particle decays, see @ref{Decay} and @ref{DecayOS}.
@table @option
@item DecayMass
Invariant mass of a decaying particle. The syntax is
@verbatim
DecayMass <flavour code> <min value> <max value>
@end verbatim
@item Decay
Any kinematic variable of a decaying particle. The syntax is
@verbatim
Decay(<expression>) <flavour code> <min value> <max value>
@end verbatim
where @code{<expression>} is an expression handled by the
internal interpreter, see @ref{Interpreter}.
@item Decay2
Any kinematic variable of a pair of decaying particles. The syntax is
@verbatim
Decay2(<expression>) <flavour1 code> <flavour2 code> <min value> <max value>
@end verbatim
where @code{<expression>} is an expression handled by the
internal interpreter, see @ref{Interpreter}.
@end table
Particles are identified by flavour, i.e. the cut is applied
on @emph{all} decaying particles that match @option{<flavour code>}.
@option{<min value>} and @option{<max value>} are floating point
numbers, which can also be given in a format that is understood
by the internal algebra interpreter, see @ref{Interpreter}.
@node Jet finders
@subsection Jet finders
......
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