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physicsmatt

Paper Explainer: Precision Corrections to Fine Tuning in SUSY

22 Nov 2016, 04:06 UTC
Paper Explainer: Precision Corrections to Fine Tuning in SUSY
(200 words excerpt, click title or image to see full post)

This paper is part of a pair with the paper I wrote about here. We were interested in determining how constrained a particular theoretical extension of the Standard Model, supersymmetry (or "SUSY") is by the present experimental results (as of this last summer's ICHEP meeting). The previous paper was the "phenomenology" paper: we took the experimental results, reinterpreted them in the context of a number of interesting models, and calculated the amount of "tuning" that would be present in each model.
The paper we just put out is more of the "theory" paper, the paper that outlines how we did the tuning calculations we used in the phenomenology paper. The results are somewhat technical, so I will spend a bit more time describing the problem in general, and then talk in broad terms about what this paper adds to the discussion. So first I should describe a bit what we mean by "tuning," and why theoretical physicists care so much about it.
The question of "fine tuning" gets back to one of the big theoretical problems that is present in the Standard Model of particle physics: the problem of the Higgs boson mass. I wrote a bit about this in ...

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