Erratum:Λpolarization in peripheral heavy ion collisions [Phys. Rev. C88, 034905 (2013)]

Abstract

In Sec. II, in the un-numbered equation after Eq. (4), we reported the angular distribution of the proton momentum dN/d * as a function of the polarization vector 0. In our convention, which follows that of Ref. [10], this vector has a maximal magnitude of 1/2, i.e., the spin, whereas the usual convention in particle physics has as maximal magnitude 1, i.e., 100% polarization.

Hyperons polarization in heavy-ion collisions

“…Nevertheless the comparison (see figure 5) of various approaches shows the similar scale and rapidity dependence of polarization. Another approach to polarization is based on the so-called thermal vorticity [7]. To provide the comparison we calculated (see figure 6) the thermal vorticity field and respective polarization.…”

“…We compare the two rather distinct methods of determining the hyperon polarization. The first corresponds to its earlier suggested [3] and explored [5] relation to the induced axial current while the second one follows the procedure based on the thermal vorticity [7]. The first method is based on the calculation of strange axial charge…”

“…The mechanism analogous to CVE (known as axial vortical effect, see [4] and references therein) leads to induced axial current of strange quarks which may be converted to polarization of Λ-hyperons [3,5,6]. Another mechanism of this polarization is provided by so-called thermal vorticity in the hydrodynamical approach [7].…”

Chaotic vortical flows and their manifestations

“…The first corresponds to earlier suggested [3] and explored [4] relation to induced axial current while the second one follows the procedure [8,16] based on thermal vorticity. …”

“…therein) leads to induced axial current of strange quarks which may be converted to polarization of Λ-hyperons [3,4,7]. Another mechanism of this polarization is provided [8] by so-called thermal vorticity in the hydrodynamical approach.…”