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object --+ | dict --+ | base_objects.PhysicsObject --+ | HelasMultiProcess
HelasMultiProcess: If initiated with an AmplitudeList, generates the HelasMatrixElements for the Amplitudes, identifying processes with identical matrix elements
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matrix_element_class HelasMatrixElement: list of processes with identical Helas calls, and the list of HelasDiagrams associated with the processes. |
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new empty dictionary |
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Default values for all properties
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Filter for valid process property values.
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Return process property names as a nicely sorted list.
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Allow initialization with AmplitudeList. Matrix_element_opts are potential options to be passed to the constructor of the HelasMatrixElements created. By default it is none, but when called from LoopHelasProcess, this options will contain 'optimized_output'.
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Process the color information for a given matrix element made of a tree diagram. compute_loop_nc is dummy here for the tree-level Nc and present for structural reasons only. |
Generate the HelasMatrixElements for the amplitudes, identifying processes with identical matrix elements, as defined by HelasMatrixElement.__eq__. Returns a HelasMatrixElementList and an amplitude map (used by the SubprocessGroup functionality). decay_ids is a list of decayed particle ids, since those should not be combined even if matrix element is identical. The compute_loop_nc sets wheter independent tracking of Nc power coming from the color loop trace is necessary or not (it is time consuming). Matrix_element_opts are potential additional options to be passed to the HelasMatrixElements constructed. |
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