Is the B/C data slope in AMS-02 data actually telling us something about the diffusion coefficient slope?

The measurement of the boron to carbon flux ratio provides relevant insights on the propagation of cosmic rays in the Galaxy. There is a common misconception about the fact that high-energy B/C data from AMS-02 directly provides the slope of the diffusion coefficient, implying that additional effects at play (convection, reacceleration, and destruction) can be neglected. Using the USINE code and taking into account all the relevant processes, we show that this assumption is not supported: the B/C data slope is not constant, its rigidity dependence being shaped in particular by inelastic interactions up to TeV energies. Heavier species are expected to be more impacted than lighter ones, and this should reflect in AMS-02 data, for which a softening of the slope with Z is predicted

Is the B/C data slope in AMS-02 data actually telling us something about the diffusion coefficient slope?

The measurement of the boron to carbon flux ratio provides relevant insights on the propagation of cosmic rays in the Galaxy. There is a common misconception about the fact that high-energy B/C data from AMS-02 directly provides the slope of the diffusion coefficient, implying that additional effects at play (convection, reacceleration, and destruction) can be neglected. Using the USINE code and taking into account all the relevant processes, we show that this assumption is not supported: the B/C data slope is not constant, its rigidity dependence being shaped in particular by inelastic interactions up to TeV energies. Heavier species are expected to be more impacted than lighter ones, and this should reflect in AMS-02 data, for which a softening of the slope with Z is predicted

Is the B/C data slope in AMS-02 data actually telling us something about the diffusion coefficient slope?

The measurement of the boron to carbon flux ratio provides relevant insights on the propagation of cosmic rays in the Galaxy. There is a common misconception about the fact that high-energy B/C data from AMS-02 directly provides the slope of the diffusion coefficient, implying that additional effects at play (convection, reacceleration, and destruction) can be neglected. Using the USINE code and taking into account all the relevant processes, we show that this assumption is not supported: the B/C data slope is not constant, its rigidity dependence being shaped in particular by inelastic interactions up to TeV energies. Heavier species are expected to be more impacted than lighter ones, and this should reflect in AMS-02 data, for which a softening of the slope with Z is predicted

Integrating Multidisciplinary Results to Produce New Knowledge About the Physician-Patient Relationship: A Methodology Applied to the INTERMEDE Project

International audienceThe INTERMEDE Project brought together a number of research teams to study the interaction between a patient and their general practitioner, and how this can produce social inequalities in health. The ultimate objective of the project was to formalize a core of common findings by integrating qualitative and quantitative results. The methodology chosen for the integration was inspired by the Delphi participatory method. It involves several rounds of questions and feedback in writing between all members of project teams, in order to compare contradictory opinions and identify key concepts arising from the project. This interdisciplinary research has provided a more nuanced understanding of the mechanisms underlying physician–patient interaction by revealing the convergences of the various disciplinary approaches