Internal seminar by Mia West and Henry Truong

Friday 25 Feb 2022, 14:00 → 15:00 Europe/London

Mia West: „On the Road to the Standard Model“

Abstract: Effective field theories are crucial tools in our quest to find new physics beyond the Standard Model. In the electroweak sector, the Higgs Effective Field Theory (HEFT) is a general framework, encompassing even the Standard Model Effective Field Theory (SMEFT). The distinguishing feature of SMEFT is that the Higgs boson itself transforms as part of the classic doublet H. The class of theories lying in HEFT but not SMEFT is what we explore in this talk - and whether or not they contain a road to the Standard Model.

 

Henry Truong: „A factorisation-aware matrix element emulator“

 

Abstract: In this talk I will present a neural network based model to emulate matrix elements. This model improves on existing methods by taking advantage of the known factorisation properties of matrix elements. In doing so we can control the behaviour of simulated matrix elements when extrapolating into more singular regions than the ones used for training the neural network. We apply our model to the case of leading-order jet production in e+e− collisions with up to five jets. Our results show that this model can reproduce the matrix elements with errors below the one-percent level on the phase-space covered during fitting and testing, and a robust extrapolation to the parts of the phase-space where the matrix elements are more singular than seen at the fitting stage.

 

Zoom link:  IPPP Seminars (Friday at 2 pm UK time)

https://durhamuniversity.zoom.us/j/99420124988?pwd=ZEFLSDB3THJtaWZOTU54R25mT1NuZz09

Meeting ID: 994 2012 4988