computeSingleKinematicsForDVCSComptonFormFactor.xml 1.79 KB
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<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>

<!--
This scenario demonstrates a simple task as the evaluation of DVCS Compton Form Factors (CFF) in a single kinematic point. The result of this scenario is printed out to the standard output. These are CFF values for all GPD types defined in the selected GPD model.
-->

<!-- Scenario starts here -->
<!-- For your convenience and for bookkeeping provide creation date and unique description -->
<scenario date="2017-07-18" description="DVCS CFF evaluation for single kinematics example">

   <!-- First task: evaluate DVCS CFF for a single kinematics --> 
   <!-- Indicate service and its methods to be used and indicate if the result should be stored in the database --> 
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   <task service="DVCSConvolCoeffFunctionService" method="computeSingleKinematic" storeInDB="0">
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      <!-- Define DVCS CFF kinematics -->
      <kinematics type="DVCSConvolCoeffFunctionKinematic">
         <param name="xi" value="0.01" />
         <param name="t" value="-0.1" />
         <param name="Q2" value="4." />
         <param name="MuF2" value="4." />
         <param name="MuR2" value="4." />
      </kinematics>

      <!-- Define physics assumptions -->
      <computation_configuration>

         <!-- Select DVCS CFF model -->
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         <module type="DVCSConvolCoeffFunctionModule" name="DVCSCFFStandard">
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            <!-- Indicate pQCD order of calculation -->
            <param name="qcd_order_type" value="LO" />

            <!-- Select GPD model -->
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            <module type="GPDModule" name="GPDGK16">
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            </module>

         </module>

      </computation_configuration>

   </task>

   <!-- Second task: print results of the last computation into standard output --> 
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   <task service="DVCSConvolCoeffFunctionService" method="printResults">
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   </task>

</scenario>