Fully general Lorentz structure in interaction vertices

[ohl]

Status: as of r4276 there is a completely new parser that understands LaTeX input, e.g.

\charged{u}{ubar} \tex{u} \anti\tex{\bar u} \index{\mu}\lorentz \index{a}\color \tensor{\gamma}\lorentz ... \input{alpha\_s}{0.12} \tex{\alpha_s} \derived{g_s}{\sqrt{4\pi\alpha_s}} ... \vertex[g_s]{\bar u_{\alpha,a}\gamma_{\mu\alpha\beta} T_{Aab} u_{\beta,b} G_{\mu A} ...

Work is in progress on translating the parse tree...

[Juergen Reuter]

THis is the one which is Nr. 1 on TOs priority list.

[Juergen Reuter]

After discussions with TO at the WHIZARD meeting, this might not be soooo complicated and maybe not in the utmost future :P

[Juergen Reuter]

Switching priority with the flavor sums ...

[Juergen Reuter]

This should be the main visible feature of 2.2. So tentatively moving it ahead.

[Juergen Reuter]

This will also become easier once the new O'Mega model definitions and the UFO file format are committed.

[Juergen Reuter]

Milestone renamed

[Juergen Reuter]

Milestone renamed

[Juergen Reuter]

This is part of the general UFO support, and is actually currently being worked on by TO.

[Juergen Reuter]

Milestone renamed

[Juergen Reuter]

This seems to be close to completion now. O'Mega can write its own Fortran code for Lorentz structures now, it supports all four-fermion structures, it can handle 5- and 6- point vertices, it seems to be completely general on color structures (cf. #142), and also Majorana fermions are supported. This will be released as 2.8.0 end of June 2019/early July 2019.

[Juergen Reuter]

Except for the final point with the Majorana fermions (and the issue #270 with the SLHA files) this can be closed soon. As the first point will not be addressed now, this remains open until Majorana fermions are supported.

[Juergen Reuter]

Milestone renamed

[Juergen Reuter]

Transferred to Gitlab issue 305.