3 years ago

# $Z_c(3900)/Z_c(3885)$ Z c ( 3900 ) / Z c ( 3885 ) as a virtual state from $\pi J/\psi -\bar{D}^*D$ π J / ψ - D ¯ ∗ D interaction

Dian-Yong Chen, Jun He

### Abstract

In this work, we study the $${\pi \!}J{\!/}\psi$$ and $$\bar{D}^*D$$ invariant mass spectra of the Y(4260) decay to find out the origin of the $$Z_c(3900)$$ and $$Z_c(3885)$$ structures. The $${\pi \!}J{\!/}\psi -\bar{D}^{*}D$$ interaction is studied in a coupled-channel quasipotential Bethe–Saltpeter equation approach, and embedded to the Y(4260) decay process to reproduce both $${\pi ^{-}\!}J{\!/}\psi$$ and $$D^{*-}D^0$$ invariant mass spectra observed at BESIII simultaneously. It is found out that a virtual state at energy about 3870 MeV is produced from the interaction when both invariant mass spectra are comparable with the experiment. The results support that both $$Z_c(3900)$$ and $$Z_c(3885)$$ have the same origin, that is, a virtual state from $${\pi \!}J{\!/}\psi -\bar{D}^*{D}$$ interaction, in which the $$\bar{D}^*{D}$$ interaction is more important and the coupling between $$\bar{D}^*{D}$$ and $${\pi \!}J{\!/}\psi$$ channels plays a minor role.

DOI: 10.1140/epjc/s10052-018-5580-z

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.