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SUMMARY:New  Markov-Chain Monte Carlo analyses for the evaluation of the a
 ntiproton  background
DTSTART;VALUE=DATE-TIME:20201006T140500Z
DTEND;VALUE=DATE-TIME:20201006T142500Z
DTSTAMP;VALUE=DATE-TIME:20260518T065418Z
UID:indico-contribution-2195@cern.ch
DESCRIPTION:Speakers: Pedro De la Torre Luque (University of Bari)\nGalact
 ic cosmic rays (GCRs) undergo diffusion by plasma wave interactions\, nucl
 ear reactions with interstellar gas and other processes during their propa
 gation. A good knowledge in the spallation cross sections is a key ingredi
 ent to study this diffusion since the formation of secondary CRs keeps tra
 ck of the amount of matter traversed. In this work\, we perform different 
 analyses of the diffusion parameters that best match the most recent CR da
 ta from the AMS-02 experiment for different spallation cross sections para
 meterizations. The simulations will be performed with a preliminary versio
 n of the upcoming DRAGON2 code and the analysis is carried out with a Mark
 ov-Chain Monte Carlo algorithm.\n\nRecent CR antiproton studies have claim
 ed the possibility of an excess of data over the predicted flux\, which ca
 n be the signature of annihilation or decay of a dark matter particle with
  a mass around 80 GeV into antiprons.  We will derive the antiproton spect
 ra predicted by the propagation parameters inferred from our MCMC analyses
  in order to evaluate\, for first time\, the uncertainties associated to t
 he spallation cross sections in the antiproton predictions and test their 
 compatibility with antiproton data.\n\nhttps://indico.particle.mephi.ru/ev
 ent/35/contributions/2195/
LOCATION:Zoom Astroparticle
URL:https://indico.particle.mephi.ru/event/35/contributions/2195/
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