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 propose the transverse velocity ($\beta_T$) dependence of theanti-deuteron to deuteron ratio as a new observable to search for the QCDcritical point in heavy-ion collisions. The QCD critical point can attract thesystem evolution trajectory in the QCD phase diagram, which is known asfocusing effect. To quantify this effect, we employ thermal model and hadronictransport model to simulate the dynamical particle emission along ahypothetical focusing trajectory near critical point. We found the focusingeffect can lead to anomalous $\beta_T$ dependence of $\bar{p}/p$, $\bar{d}/d$and $^3\overline{\text{He}}/^3\text{He}$ ratios. We examined the $\beta_T$dependence of $\bar{p}/p$ and $\bar{d}/d$ ratios of central Au+Au collisions at$\sqrt{s_{NN}}$ = 7.7 to 200 GeV measured by the STAR experiment at RHIC.Surprisingly, we only observe a negative slope in $\beta_T$ dependence of$\bar{d}/d$ ratio at $\sqrt{s_{NN}}$ = 19.6 GeV, which indicates the trajectoryevolution has passed through the critical region. In the future, we couldconstrain the location of the critical point and/or width of the criticalregion by making precise measurements on the $\beta_T$ dependence of$\bar{d}/d$ ratio at different energies and rapidity.

Search for the QCD Critical Point by Transverse Velocity Dependence of Anti-deuteron to Deuteron Ratio