Transverse Lambda production at the future Electron-Ion Collider

Journal Article (Journal Article)

We provide a comprehensive overview of transversely polarized Λ production at the future Electron-Ion Collider (EIC). In particular, we study both spontaneous transverse Λ polarization as well as the transverse spin transfer within the transverse momentum dependent (TMD) factorization region. To describe spontaneous Λ 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 Λ 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 Λ polarization as well as the transverse spin transfer inside the jets in back-to-back electron-jet production at the EIC.

Full Text

Duke Authors

Cited Authors

  • Kang, ZB; Terry, J; Vossen, A; Xu, Q; Zhang, J

Published Date

  • May 1, 2022

Published In

Volume / Issue

  • 105 / 9

Electronic International Standard Serial Number (EISSN)

  • 2470-0029

International Standard Serial Number (ISSN)

  • 2470-0010

Digital Object Identifier (DOI)

  • 10.1103/PhysRevD.105.094033

Citation Source

  • Scopus