Séminaires et colloques

When theory-guidance walks hand-in-hand with experimental exploration: the case of Beyond the Standard Model searches at the LHC

by Hugo Beauchemin

Gr. Amphi (LPSC)

Gr. Amphi



One way to search for new physics at the Large Hadron Collider is to look, not for signs of specific particles predicted by particular models, but for signatures that have features distinctive of a wide variety of Beyond Standard Model physics models, and that may even reflect new physics not included in any model thus far proposed. These Signature Based Model Independent (SBMI) searches are the subject of this talk. Although in many ways SBMI searches have characteristics associated with exploratory experiments (as described by Steinle and extended by Karaca), we will describe how they involve theoretical assumptions and theory guidance at every level, all the way down to the identification within the data of signatures associated with Standard Model ontology, such as electrons. Our line of analysis invites a restructuring of the epistemology of experimental physics along pragmatist lines. Instead of distinguishing exploratory from other types of experimentation, we distinguish experimental tasks (e.g., testing a hypothesis or exploring through parameter variation) that can be combined with other tasks (calibration, correction, etc.) in the pursuit of epistemic objectives. From this point of view, theory consists in a pool of resources available to an inquiry to help reach its objectives.

Organized by

Cyrille Doux, Sabine Kraml, Killian Martineau