Add a list of charm hadron IDs to the pythiaEvtGen interface

[zuoxunwu]

BEGINRELEASENOTES
Adding a list of charm hadron IDs to the pythiaEvtGen interfaces so the generic non-signal charm decays are handled in EvtGen.

ENDRELEASENOTES

Local tests:
Tested with EvtGen decs for D meson decays. Worked as expected.

[tmadlener]

Suggested change

	std::vector<int> B_ids;
	std::vector<int> C_ids;

In principle only the Had_ids are necessary as member variable here, right? The B and C_ids seem to be mainly used for initializing that, but nowhere else.

[vvolkl]

Hi @zuoxunwu,

thanks for the PR! Can you check the suggestion by Thomas above?

[tmadlener]

Hi @zuoxunwu, did you have time to look into the comment above? Is there anything else missing from your side here?

[zuoxunwu]

Suggested change

	B_ids = std::vector<int>{511, 521, 531, 541, 5122, 5132, 5142, 5232, 5242, 5332, 5342, 5412, 5414, 5422,
	std::vector<int> B_ids = std::vector<int>{511, 521, 531, 541, 5122, 5132, 5142, 5232, 5242, 5332, 5342, 5412, 5414, 5422,
	5424, 5432, 5434, 5442, 5444, 5512, 5514, 5522, 5524, 5532, 5534, 5542, 5544, 5544};
	std::vector<int> C_ids = std::vector<int>{411, 421, 431, 4122, 4222, 4212, 4112, 4224, 4214, 4114, 4232, 4132, 4322,
	4312, 4324, 4314, 4332, 4334, 4412, 4422, 4414, 4424, 4432, 4434, 4444};

[zuoxunwu]

Hi @tmadlener and @vvolkl,

Sorry I totally missed the previous notices. Just taking a look.
Indeed it is just for book-keeping. I am not sure if it might be handy for some potential functions, like if a given hadron belongs to B or C (should be obvious by the first digit anyway).
I do not have any preference on this. Let me know if you would prefer one way.

(Just added a declaration, if we remove the B_ids C_ids from the header.)

Best,
Xunwu