Skip to Main Content (Press Enter)

Logo UNITO
  • ×
  • Home
  • Pubblicazioni
  • Progetti
  • Persone
  • Competenze
  • Settori
  • Strutture
  • Terza Missione

UNI-FIND
Logo UNITO

|

UNI-FIND

unito.it
  • ×
  • Home
  • Pubblicazioni
  • Progetti
  • Persone
  • Competenze
  • Settori
  • Strutture
  • Terza Missione
  1. Strutture

Constraints on WIMP Dark Matter from the High Energy PAMELA $\bar{p}/p$ data

Articolo
Data di Pubblicazione:
2009
Abstract:
A new calculation of the $\bar{p}/p$ ratio in cosmic rays is compared to the recent PAMELA data. The good match up to 100 GeV allows to set constraints on exotic contributions from thermal WIMP dark matter candidates. We derive stringent limits on possible enhancements of the WIMP \pbar flux: a $m_{\rm WIMP}$=100 GeV (1 TeV) signal cannot be increased by more than a factor 6 (40) without overrunning PAMELA data. Annihilation through the $W^+W^-$ channel is also inspected and cross-checked with $e^+/(e^-+e^+)$ data. This scenario is strongly disfavored as it fails to simultaneously reproduce positron and antiproton measurements.
Tipologia CRIS:
03A-Articolo su Rivista
Elenco autori:
F. Donato; D. Maurin; P. Brun; T. Delahaye; P. Salati
Autori di Ateneo:
DONATO Fiorenza
Link alla scheda completa:
https://iris.unito.it/handle/2318/101205
Link al Full Text:
https://iris.unito.it/retrieve/handle/2318/101205/6726/PhysRevLett_102_071301.pdf
Pubblicato in:
PHYSICAL REVIEW LETTERS
Journal
  • Utilizzo dei cookie

Realizzato con VIVO | Designed by Cineca | 25.6.1.0