IRN Terascale @ LPSC Grenoble

Session

Beyond the Standard Model

25 avr. 2023, 14:00

Grand Amphi (LPSC Grenoble)

34. Precision predictions for exotic lepton production at the Large Hadron Collider

Yehudi Simon (LPTHE - Sorbonne Université)

25/04/2023 14:00

BSM

We calculate total and differential cross sections for the pair production, at the Large Hadron Collider, of exotic leptons that could emerge from models with vector-like leptons and in Type-III seesaw scenarios. Our predictions include next-to-leading-order QCD corrections, and we subsequently match them with either parton showers, or threshold resummation at the next-to-next-to-leading...

39. Functional one-loop matching of effective field theories

Felix Wilsch (University of Zurich)

25/04/2023 14:20

BSM

The separation of scales in effective field theories is essential for studying the low-energy phenomenology of BSM models. An effective theory, containing only light degrees of freedom, can be obtained from an underlying UV theory by integrating out heavy states using path integral techniques, ensuring that both theories describe the same low-energy dynamics. It is important to perform this...

43. Towards a combined global SMEFT fit: Using likelihood analyses in the Top and Higgs sector

Nikita Schmal (ITP, Heidelberg University)

25/04/2023 14:40

BSM

We present an updated global SMEFT analysis in the Top sector using the SFitter framework which focuses on a comprehensive treatment of uncertainties. We make use of a newly implemented marginalization procedure which allows for comparisons between profiling and marginalization methods. In addition, two top measurements included in the fit are updated using likelihoods made publicly available...

28. Higgs Couplings to Weak Gauge Bosons: Probing 2 New Physics Scales at Once!

Florian Nortier (IPhT (CEA Paris-Saclay))

25/04/2023 15:00

BSM

Measuring the Higgs boson couplings with an increasing precision is an indirect probe of new physics scenarios. In this talk, I will discuss how observing loop-induced deviations to hWW and hZZ couplings via new vectorlike leptons close to the weak scale can be used to deduce an upper bound on the mass scale of new bosons. This is an interesting example where observing a deviation to the...

61. Muon(ium) g-2

Cedric Delaunay (LAPTH)

25/04/2023 15:20

40. On axion couplings and anomalies

Emilian Dudas (CPHT, Ecole Polytechnique)

25/04/2023 16:10

BSM

The axion couplings and their relation to quantum anomalies are discussed.
I comment on a puzzling non-decoupling effect and its consequences.

30. The Universal One-Loop Effective Action with Gravity

Rémy Larue (LPSC)

25/04/2023 16:30

BSM

42. New perspectives in Gravity Mediated SUSY Breaking: New contributions to the Higgs sector

Robin Ducrocq (IPHC)

25/04/2023 16:50

BSM

I will present a model related to a new class of solutions in gravity-mediated supersymmetry breaking. This class of solutions involves a new sector which may help to reduce the fine tuning of the Higgs boson mass. New supersymmetry breaking terms are generated corresponding to soft breaking terms and new hard breaking terms that are Planck-suppressed but may be sizable and contribute to the...

27. Physics at the High Energy Muon Collider

Roberto Franceschini (CERN)

25/04/2023 17:10

BSM

In this talk I will review the physics case of a high energy muon collider for the exploration of new physics with particular focus on Higgs boson physics, top quark physics and dark matter. I will discuss the role of a high energy muon collider in the landscape of future experiment to probe new physics in the next decades.