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We discuss the arbitrary polynomial chaos (aPC), which has been subject of research in a few recent theoretical papers. Like all polynomial chaos expansion techniques, aPC approximates the dependence of simulation model output on model parameters by expansion in an orthogonal polynomial basis. The aPC generalizes chaos expansion techniques towards arbitrary(More)
A. Airapetian,30 N. Akopov,30 Z. Akopov,30 M. Amarian,6, 30 V.V. Ammosov,22 A. Andrus,15 E.C. Aschenauer,6 W. Augustyniak,29 R. Avakian,30 A. Avetissian,30 E. Avetissian,10 P. Bailey,15 V. Baturin,21 C. Baumgarten,19 M. Beckmann,5 S. Belostotski,21 S. Bernreuther,8 N. Bianchi,10 H.P. Blok,20, 28 J. Blümlein,6 H. Böttcher,6 A. Borissov,17 A. Borysenko,10 M.(More)
A. Airapetian, N. Akopov, Z. Akopov, M. Amarian, 32 V.V. Ammosov, A. Andrus, E.C. Aschenauer, W. Augustyniak, R. Avakian, A. Avetissian, E. Avetissian, P. Bailey, V. Baturin, C. Baumgarten, M. Beckmann, S. Belostotski, S. Bernreuther, N. Bianchi, H.P. Blok, 30 H. Böttcher, A. Borissov, M. Bouwhuis, J. Brack, A. Brüll, I. Brunn, G.P. Capitani, H.C. Chiang,(More)
K. Ackerstaff, A. Airapetian, N. Akopov, I. Akushevich M. Amarian, E.C. Aschenauer, H. Avakian, R. Avakian, A. Avetissian, B. Bains, C. Baumgarten, M. Beckmann, St. Belostotski, J.E. Belz, Th. Benisch, S. Bernreuther, N. Bianchi, J. Blouw, H. Böttcher, A. Borissov, J. Brack, S. Brauksiepe, B. Braun, B. Bray, St. Brons, W. Brückner, A. Brüll, E.E.W. Bruins,(More)
A. Airapetian,32 N. Akopov,32 M. Amarian,24,27,32 E. C. Aschenauer,13,14,6 H. Avakian,10 R. Avakian,32 A. Avetissian,32 E. Avetissian,10,32 B. Bains,15 C. Baumgarten,22 M. Beckmann,12 S. Belostotski,25 J. E. Belz,28,29 Th. Benisch,8 S. Bernreuther,8 N. Bianchi,10 J. Blouw,24 H. Böttcher,6 A. Borissov,6,14 M. Bouwhuis,15 J. Brack,4 S. Brauksiepe,12 B.(More)
The proton, neutron and deuteron structure functions F2(x,Q 2) and g1(x,Q 2), measured at intermediate Q2, are analyzed within a Regge approach. This analysis serves to fix the parameters of this scheme which are then used to calculate, in a unified Regge approach, the properties of ρ0 meson electroproduction on the proton and the deuteron. In this way, the(More)
C. Adolph, M.G. Alekseev, V.Yu. Alexakhin, Yu. Alexandrov,* G.D. Alexeev, A. Amoroso, A.A. Antonov, A. Austregesilo, B. Badełek, F. Balestra, J. Barth, G. Baum, Y. Bedfer, A. Berlin, J. Bernhard, R. Bertini, M. Bettinelli, K. Bicker, J. Bieling, R. Birsa, J. Bisplinghoff, P. Bordalo, F. Bradamante, C. Braun, A. Bravar, A. Bressan, M. Büchele, E. Burtin, L.(More)
We discuss the quark transversity distribution function and a possible way to access it through the measurement of single spin azimuthal asymmetry in semiinclusive single pion electroproduction on a transversely polarized target. At leading order in 1/Q, the cross section for a hard scattering process is given by the convolution of a hard part and a soft(More)