Programme

P.58 -- Poster, VCTP-48

Date: Thursday, 3 August 2023

Time: 08:30 - 10:00

An upgrade to Lilith - a tool for constraining new physics from Higgs measurements

Nguyen Dang Bao Nhi (1), Le Duc Ninh (2), Sabine Kraml (3), Tran Quang Loc (4)

(1) University of Science, Vietnam National University, Ho Chi Minh City, Vietnam; (2) Phenikaa University, Hanoi, Vietnam; (3) Laboratoire de Physique Subatomique et de Cosmologie, Université Grenoble-Alpes, CNRS/IN2P3, Grenoble, France; (4) She-Kings LLC, Santa Fe, US.

Lilith is a public Python library for constraining new physics from the Higgs production measurements by the statistical method of maximum likelihood. The current Lilith version 2.1 uses the Higgs signal strengths as input. This talk introduces a new version of the program, Lilith 2.2 coming with a new choice of input data using Simplified Template Cross Section (STXS) measurements. We then give examples of using Lilith to fit the Higgs couplings of the Standard Model Effective Field Theory and of the Two Higgs Doublet models type I and II for illustrating the usage of Lilith in various new physics scenarios. The importance of the theoretical uncertainties and their correlations on the constraint results is also discussed. The program is publicly available on GitHub.

Presenter: Nguyễn Đặng Bảo Nhi