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--- 2017:groups:np:eftinterference [2017/06/16 17:42]
ken.mimasu created
+++ 2017:groups:np:eftinterference [2017/06/18 00:15]
kristin.lohwasser
@@ 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
+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)]]
+  * Rivet tool implementing stage 1 and 0 selections maintained by LHCHXSWG [[https://svnweb.cern.ch/cern/wsvn/lhchiggsxs/repository/TemplateXS/| (link)]]

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