-0.05 0 0.05 0 0.1 0.2 0.3 0.4 0.5 a Sinφ (x) for Π

نویسندگان

  • A. V. Efremov
  • K. Goeke
  • P. Schweitzer
چکیده

Recently it became clear that the expression Eq.(115) in the paper [1] for the description of azimuthal sinφ spin asymmetries in semi-inclusive hadroproduction in DIS on longitudinally (with respect to the lepton momentum) polarized target contains a misprint in sign of the twist 3 term. This sign was corrected later in the paper [2] (Eq.(2)). However all authors [3, 4, 5, 6] (including us) aiming at description of this phenomena did not notice this very important change and, as a result, use the same sign as for longitudinal (with respect to the virtual photon momentum) contribution as for the transversal one. With the correct sign in Eq. (115) these contributions should obtain opposite signs with positive sign for the longitudinal part if z-axis chosen in the direction of virtual photon and positive target polarization is opposite to this direction, see Fig.. So all these descriptions should be recalculated with different parameters for the Collins fragmentation function H⊥ 1 . Concerning our paper [5], the azimuthal angle φ should be replaced by (−φ), see caption of Fig.. Moreover the expression for σUT in Eq.(7), BT in Eq.(11) and in Fig.3a should have a minus sign (and similar changes in [6]). With these changes and with using for Collins analyzing power ”the

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تاریخ انتشار 2002