@article{24ca6a8c5c134f848357fea11ca5930d,

title = "Single-spin azimuthal asymmetry in exclusive electroproduction of pi(+) mesons",

abstract = "A single-spin asymmetry in the distribution of exclusively produced pi(+) mesons azimuthally around the virtual photon direction relative to the lepton scattering plane has been measured for the first time in deep-inelastic scattering of positrons off longitudinally polarized protons. Integrated over the experimental acceptance, the sin moment of the polarization asymmetry of the cross section is measured to be -0.18 +/- 0.05(stat.) +/- 0.02(syst.). The asymmetry is also studied as a function of the relevant kinematic variables, and its magnitude is found to grow with decreasing x and increasing -t and vanish at t --> t(min) (where x is the Bjorken scaling variable and t is the squared four-momentum transferred to the nucleon). (C) 2002 Elsevier Science B.V. All rights reserved.",

keywords = "LEADING ORDER",

author = "A. Airapetian and N. Akopov and Z. Akopov and M. Amarian and E.C. Aschenauer and H. Avakian and R. Avakian and A. Avetissian and E. Avetissian and P. Bailey and V. Baturin and C. Baumgarten and M. Beckmann and S. Belostotski and S. Bernreuther and N. Bianchi and H. Bottcher and A. Borissov and O. Bouhali and M. Bouwhuis and J. Brack and S. Brauksiepe and A. Brull and I. Brunn and H.J. Bulten and G.P. Capitani and P. Chumney and E. Cisbani and G. Ciullo and G.R. Court and P.F. Dalpiaz and {De Leo}, R. and {De Nardo}, L. and {De Sanctis}, E. and {De Schepper}, D. and E. Devitsin and P.K.A.D. Huberts and {Di Nezza}, P. and M. Duren and M. Ehrenfried and G. Elbakian and F. Ellinghaus and J. Ely and R. Fabbri and A. Fantoni and A. Fechtchenko and L. Felawka and B.W. Filippone and H. Fischer and {van den Brand}, J.F.J. and {HERMES Collaboration}",

year = "2002",

month = may,

day = "23",

doi = "10.1016/S0370-2693(02)01780-X",

language = "English",

volume = "535",

pages = "85--92",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier",

number = "1-4",

}