Fri·Aug 13, 2021Friday·August 13, 2021

1. 01*

   Light and strange hadron production and anisotropic flow measurement in Au+Au collisions at $\sqrt{s_{\mathrm{NN}}}=3\mathrm{GeV}$ from STAR

   Guannan Xie (for the STAR Collaboration)🇺🇸

   In this proceeding, we present on our first measurements of identified particle ($\pi$, $K$, $p$, $K_s^0$, $\Lambda$, $\varphi$, ${\Xi }^{-}$) production and anisotropic flow ($v_1$, $v_2$) in Au+Au collisions at $\sqrt{s_{\mathrm{NN}}}=3\mathrm{GeV}$. Various models including thermal and transport model calculations are compared to data, these results imply that the matter produced in the 3 GeV Au+Au collisions is considerably different from that at higher energies.

   nucl-exhep-exEPJ Web Conf.(2022)·1 citation
2. 02*

   Transverse Lambda production at the future Electron-Ion Collider

   Zhong-Bo Kang🇺🇸 · John Terry🇺🇸 · Anselm Vossen🇺🇸 · Qinghua Xu🇨🇳 · Jinlong Zhang🇺🇸

   We provide a comprehensive overview of transversely polarized $\Lambda$ production at the future Electron-Ion Collider (EIC). In particular, we study both spontaneous transverse $\Lambda$ polarization as well as the transverse spin transfer within the Transverse Momentum Dependent (TMD) factorization region. To describe spontaneous $\Lambda$ polarization, we consider the contribution from the TMD Polarizing Fragmentation Function (TMD PFF). Similarly, we study the contribution of the transverse spin transfer originating from the transversity TMD Fragmentation Function (TMD FF). We provide projections for the statistical uncertainties in the corresponding spin observables at the future EIC. Using these statistical uncertainties, we characterize the role that the future EIC will play in constraining these distributions. We perform an impact study in the semi-inclusive deep inelastic scattering process for spontaneous $\Lambda$ polarization with a proton beam. We find that the projected experimental data leads to a significant decrease in the uncertainties for the $u$ and sea TMD PFFs. Furthermore, to access the impact of the EIC on the transversity TMD FF, we perform the first extraction of the transversity TMD FF from the recent COMPASS data. We compare the statistical uncertainties of the future EIC with the theoretical uncertainties from our extraction and find that the EIC could have a significant role in constraining this distribution. Finally, we also provide projections for both spontaneous $\Lambda$ polarization as well as the transverse spin transfer inside the jets in back-to-back electron-jet production at the EIC.

   ↳ hep-phhep-exhep-thnucl-ex+1PRD(2022)·33 citations

* Reconstructed cohort: no mailing for this day survives in the archive. Papers are grouped by their submission times and arXiv's announcement cut-off, assuming announcement without delay; positions follow identifier order. Validated at ~91% exact-day agreement against the archived era.