Abstract
Assuming the observation of a squark at the Large Hadron Collider, we investigate methods to access its flavour content and thus gain information on the underlying flavour structure of the theory. Based on simple observables, we apply a likelihood inference method to determine the top-flavour content of the observed particle. In addition, we employ a multivariate analysis in order to classify different flavour hypotheses. Both methods are discussed within a simplified model and the more general Minimal Supersymmetric Standard Model including most general squark mixing. We conclude that the likelihood inference may provide an estimation of the top-flavour content if additional knowledge, especially on the gaugino sector is available, while the multivariate analysis identifies different flavour patterns and can accommodate a more minimalistic set of observables.
Highlights
One of the main goals of the Large Hadron Collider (LHC) is the quest for signals of physics beyond the Standard Model of particle physics
Experimental studies typically are based on the Minimal Flavour Violation (MFV) paradigm assuming that all flavour-violating interactions stem from the Yukawa couplings alone, as it is the case in the Standard Model
We discuss the question to which extend the flavour decomposition of a squark-like state produced at the Large Hadron Collider can be reconstructed
Summary
One of the main goals of the Large Hadron Collider (LHC) is the quest for signals of physics beyond the Standard Model of particle physics. Assuming the discovery of a squark-like state at the LHC, e.g., through the channel mentioned above, it will be crucial to understand its exact nature and in particular reveal its flavour content This information will give important hints towards the flavour structure of the underlying theory and will hint towards possible Grand Unification frameworks [17, 38,39,40,41,42,43,44,45,46,47,48].
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