July 29, 2015 to August 6, 2015
World Forum
Europe/Amsterdam timezone

Theoretical uncertainties in extracting cosmic ray diffusion parameters: the boron to carbon ratio

Aug 1, 2015, 3:30 PM
Amazon Foyer (World Forum)

Amazon Foyer

World Forum

Churchillplein 10 2517 JW Den Haag The Netherlands
Board: 183
Poster contribution CR-TH Poster 2 CR


Mr Yoann Genolini (LAPTh)


PAMELA and, more recently, AMS-02, are ushering us into a new era of greatly reduced statistical uncertainties in experimental measurements of cosmic ray fluxes. In particular, new determinations of traditional diagnostic tools such as the boron to carbon ratio (B/C) are expected to significantly reduce errors on cosmic-ray diffusion parameters, with important implications for astroparticle physics, ranging from inferring primary source spectra to indirect dark matter searches. It is timely to stress, however, that the conclusions inferred crucially depend on the framework in which the data are interpreted as well as from some nuclear input parameters. We aim at assessing the *theoretical* uncertainties affecting the outcome, with models as simple as possible while still retaining the key dependences. We compare different semi-analytical, two-zone model descriptions of cosmic ray transport in the Galaxy: infinite slab/1D, cylindrical symmetry/2D with homogeneous sources, cylindrical symmetry/2D with inhomogeneous source distribution. We test for the effect of a primary source contamination in the boron flux by parametrically altering its flux, as well as for nuclear cross-section uncertainties. All hypotheses are compared via $\chi^{2}$ minimization techniques to preliminary results from AMS-02.
Collaboration -- not specified --
Registration number following "ICRC2015-I/" 839

Primary author

Mr Yoann Genolini (LAPTh)


Antje Putze (Centre National de la Recherche Scientifique (FR)) PIERRE SALATI (LAPTh & Université de Savoie Mont Blanc) Pasquale Serpico (Unite Reseaux du CNRS (FR))

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