Longitudinal and Transverse Spin Transfer of $Lambda$ and $overline{Lambda}$ Hyperons in Polarized $p$+$p$ Collisions at $sqrt{s} = 200$ GeV at RHIC-STAR


Abstract in English

Measurements of the longitudinal spin transfer, $D_{LL}$, and the transverse spin transfer, $D_{TT}$, of the $Lambda(bar{Lambda}$) hyperon in polarized $p$+$p$ collisions are expected to be sensitive to the helicity distribution and transversity distribution of the $s(bar{s})$ quark in proton and the corresponding polarized fragmentation functions. This contribution presents the new preliminary results of the $Lambda(bar{Lambda}$) $D_{LL}$ and $D_{TT}$ using data collected at RHIC-STAR experiment in 2015, with twice larger statistics than previously published results.

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