This shows you the differences between two versions of the page.
Next revision | Previous revision Next revision Both sides next revision | ||
2017:groups:np:eftinterference [2017/06/16 17:42] ken.mimasu created |
2017:groups:np:eftinterference [2017/06/21 11:52] olivier.mattelaer |
||
---|---|---|---|
Line 1: | Line 1: | ||
- | Non-interference theorem in dimension 6 EFT beyond LO & 2->2 processes | + | ====== Non-interference in dimension 6 EFT: beyond LO & 2 to 2 processes ====== |
+ | People interested (add your name): Francesco Riva, Ken Mimasu, Benjamin Fuks, Julia Harz, Kristin Lohwasser, Fabio Maltoni, Jorge de Blas, Daniele Barducci, Minho Son, Haiying Cai | ||
+ | |||
+ | Investigate the impact of higher order corrections or additional radiation on high energy 2->2 processes involving dimension 6 EFT operators that have been shown not to interfere at leading order. | ||
+ | |||
+ | A simple test case may be $W^+ W^-$ production at a lepton collider. Here the EW corrections including dimension 6 operators have not been calculated but an extra photon (or any extra vector) emission would alter the helicity structure and is part of the higher order contribution. | ||
+ | |||
+ | References: | ||
+ | * "Helicity selection rules and noninterference for BSM amplitudes" [[https://arxiv.org/abs/1607.05236| (arXiv)]] | ||
+ | |||
+ | Helicity amplitude from madgraph (2 to 2 and 2 to 3): | ||
+ | - https://phystev.cnrs.fr/wiki/_media/2017:groups:np:ee_ww_sm_only.tgz | ||
+ | - https://phystev.cnrs.fr/wiki/_media/2017:groups:np:ee_ww_int_only.tgz | ||
+ | - https://phystev.cnrs.fr/wiki/_media/2017:groups:np:ee_ww_sm_dim6.tgz |