Theory Seminar/Dutta

Start：2016/06/23 (Thu) 1:30 PM
End：2016/06/23 (Thu) 2:30 PM
Location：Kenkyu-honkan 1F meeting room 3

Speaker：Dr.Sukanta Dutta (SGTB Khalsa College, University of Delhi)
Lecture：Constraints on Anomalous Couplings from Perturbative Unitarity
Language：英語/English
Contact：Ryusuke Jinno/jinno-AT-post.kek.jp

Abstract：

（ABSTRACT）

We perform a model independent analysis of the helicity amplitudes at high energy for all the 2 $\to$ 2 scattering processes involving gauge and Higgs bosons in the presence of anomalous $WWV, WWVV, VVH, VVHH$ ($V \equiv Z, gamma$ and $W^\pm$), $HHHH$ and $HHH$ interactions. Further, assuming all anomalous couplings to have arisen only from dimension six operators, we show that the per- turbative unitarity violation can be evaded up to $\sim$ 9 TeV corresponding to the best fit values of $f_{WW}/\Lambda^2$ and $f_{BB}/\Lambda^2$ from the combined analysis of Tevatron and LHC data.