English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Open

Presents the pdf analysis as premium feature

PDF Analysis

Insights

Presents the summarisation as premium feature

Summarisation

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Recently, a tentative 130 GeV $\gamma$-ray line signal was identified byquite a few groups. If correct it would constitute a ``smoking gun'' for darkmatter annihilations. Interestingly, the spectra of the cosmic ray electronsdetected by PAMELA and Fermi-LAT both show tiny wiggle-like structure at $\sim100$ GeV, which might indicate a weak signal of the annihilation of $\sim 130$GeV dark matter particles into electrons/positrons with a velocity-weightedcross section $\langle\sigma v\rangle_{\rm \chi\chi\rightarrow e^{+}e^{-}} \sim4\times10^{-26}~{\rm cm^{3}~s^{-1}}$. The prospect of identifying such apotential weak dark-matter-annihilation electron and/or positron component byAMS-02, a mission to measure the high energy cosmic ray spectra withunprecedented accuracy, is investigated.

physics letters b

PAMELA/Fermi-LAT electron cosmic ray spectrum at $\sim$100 GeV:  implication for dark matter annihilation signal in accordance with the 130  GeV $\gamma$-ray line