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/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Recent results from proton(deuteron)-nucleus collisions at RHIC and LHCenergies have shown an unexpected suppression of excited quarkonium states ascompared to their ground states. In particular, stronger suppression of the$\psi(2S)$ relative to the $J/\psi$ has been detected. Similar observationswere made at lower energies and were easily explained by nuclear absorption. Athigher energies, a similar explanation would violate the Heisenberg principle,since the calculations based on the uncertainty principle lead to a charmoniumformation time expected to be larger than the nuclear radius, which results inidentical nuclear break-up probability for the $\psi(2S)$ and $J/\psi$. On thecontrary, this behavior is naturally explained by the interactions of thequarkonium states with a comoving medium. We present our results on $J/\psi$and $\psi(2S)$ production for d+Au collisions at $\sqrt{s}=200$ GeV and forp+Pb collisions at $\sqrt{s}=5.02$ TeV.

Excited charmonium suppression in proton-nucleus collisions as a consequence of comovers