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A bstract A measurement of the transverse polarization of the Λ and Λ ¯ hyperons in p Ne fixed-target collisions at {s₍₍} s NN = 68. 4 GeV is presented using data collected by the LHCb detector. The polarization is studied using the decay Λ → pπ − together with its charge conjugated process, the integrated values measured are array{cP =0. 029 0. 019 (stat) 0. 012 (syst), \\ P_=0. 003 0. 023 (stat) 0. 014 (syst). array} P Λ = 0. 029 ± 0. 019 stat ± 0. 012 syst, P Λ ¯ = 0. 003 ± 0. 023 stat ± 0. 014 syst. Furthermore, the results are shown as a function of the Feynman x variable, transverse momentum, pseudorapidity and rapidity of the hyperons, and are compared with previous measurements.
Aaij et al. (Tue,) studied this question.