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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We study the production of $\Lambda\Lambda$ and $\overline{\Lambda \text{n}}$exotic states in central Pb+Pb collisions at $\sqrt{s_{NN}}=2.76$ TeV at LHCvia both hadron and quark coalescence within a covariant coalescence model witha blast-wave-like parametrization for the phase-space configurations ofconstituent particles at freezeout. In the hadron coalescence, the two statesare considered as molecular states while they are considered as six-quarkstates in the quark coalescence.For $\overline{\Lambda \text{n}}$, we find thatthe yields of both molecular and six-quark states are much larger than theexperimental upper-limits. For $\Lambda\Lambda$, while the molecule-state yieldis much larger than the experimental upper-limits, the six-quark-state yieldcould be lower than the upper-limits. The higher molecule-state yields aremainly due to the large contribution of short-lived strong resonance decaysinto (anti-)nucleons and (anti-)$\Lambda$ which can significantly enhance themolecule-state yields of $\Lambda\Lambda$ and $\overline{\Lambda \text{n}}$ viahadron coalescence. Our results suggest that the current experimentalmeasurement at LHC cannot exclude the existence of the $\Lambda\Lambda$ as anexotic six-quark state, and if $\Lambda\Lambda$ is a six-quark state, it isthen on the brink of being discovered.

physical review. c

Production of $\Lambda\Lambda$ and $\bar{\Lambda \text{n}}$ in central  Pb+Pb collisions at $\sqrt{s_{NN}}$=2.76 TeV within a covariant coalescence  model