Spin transfer to $Λ_{c}^{+}$ hyperons in polarized proton collisions at RHIC

Details Spin transfer to $Λ_{c}^{+}$ hyperons in polarized proton collisions at RHIC Spin transfer to $Λ_{c}^{+}$ hyperons in polarized proton collisions at RHIC

2004-12-16

arxiv.org/abs/hep-ph/0412244v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

To be published in the proceedings of SPIN2004 Symposium, 4 pages, 1 figure

Scientific paper

The analysis\cite{ohkuma:1} of helicity transfer to $\Lambda_{c}^{+}$ in polarized proton collisions is extended to the proton helicity correlations with the $\Lambda_{c}^{+}$ transverse polarization in the production plane (parameter $D_{LS}$). The available spin transfer observables for the collisions of {\em two} longitudinally polarized protons are evaluated. It is shown that, in the central region at $\Lambda_{c}^{+}$ transverse momenta of a few GeV/c, $D_{LS}$ parameters are of about the same size as the helicity-to-helicity correlations. The methodical issue of using spin transfers for cross-checks of systematic errors in cross-section $A_{LL}$ measurements at polarized proton colliders is also briefly discussed.

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