Single-spin azimuthal asymmetries in electroproduction of neutral pions in semi-inclusive deep-inelastic scattering

Autor: M. Henoch, W.H.A. Hesselink, K. Suetsugu, V. Djordjadze, Y. Holler, M. C. Simani, P.K.A. de Witt Huberts, H. J. Bulten, G. Ciullo, Christian Schill, W. Haeberli, S. Brauksiepe, P. Chumney, D. Robinson, V. Vikhrov, A. Rostomyan, A. R. Reolon, A. Avetissian, W.-D. Nowak, N. Meyners, Manuella Vincter, S. Potashov, H. Zohrabian, Michael Tytgat, G. S. Kyle, B. Hommez, B. Seitz, Axel Maas, A. Gute, S. Taroian, Hiroaki Kobayashi, P. Bailey, T. Wise, L. Felawka, F. Schmidt, B. D. Fox, Salvatore Frullani, S. Belostotski, E. De Sanctis, H. E. Jackson, V. G. Krivokhijine, A. Schwind, P. Di Nezza, Franco Garibaldi, M. Beckmann, J. F. J. van den Brand, Jeffrey Brack, P. Liebing, P. F. Dalpiaz, I. Brunn, A. Kisselev, P.W. Green, C. Baumgarten, G. M. Urciuoli, R. Van de Vyver, Klaus Rith, G. P. Capitani, D. Hasch, A. Simon, Thomas O'Neill, K. P. Schüler, D. Heesbeen, F.H. Heinsius, Frank Ellinghaus, E. R. Kinney, K. Negodaeva, M. Amarian, N. Koch, J. Wendland, D. H. Potterveld, E. Kotik, B. R. Owen, Yasuhiro Sakemi, E. Avetissian, Nicola Bianchi, O. Mikloukho, Evaristo Cisbani, M. Ruh, Y. Naryshkin, G. Iarygin, Dirk Ryckbosch, J. Stewart, A. Brüll, A. Airapetian, A. Laziev, A. Borissov, G. Hofman, V. A. Kozlov, M. Hartig, A. Jgoun, M. Ehrenfried, J. van Hunen, H. Marukyan, R. De Leo, B. Krauss, J. Franz, B. Tipton, M. Bouwhuis, C. Scarlett, H. Böttcher, S. F. Pate, O. Grebeniouk, Erika Garutti, U. Stosslein, J. J. M. Steijger, P. Lenisa, J. Seibert, Alessandra Fantoni, L. G. Greeniaus, L. Lagamba, Z. Akopov, B. W. Filippone, Eugenio Nappi, F. Sato, C. Weiskopf, D. Reggiani, K. McIlhany, A. Nass, Peter Jung, K. Sinram, L. De Nardo, V. Gharibyan, I.A. Savin, S. Yoneyama, G.R. Court, Wolfgang Lorenzon, Andreas Schäfer, M. McAndrew, F. Meissner, G. van der Steenhoven, K. Oganessyan, A. Golendukhin, T. Lindemann, H. Fischer, J. Wilbert, V. A. Korotkov, G. Graw, H. Kolster, D. De Schepper, K. Königsmann, V. Baturin, G. Rakness, G. Elbakian, W. Brückner, S. Bernreuther, K. Hafidi, R. J. Holt, F. Masoli, J. Visser, T. A. Shibata, R.O. Avakian, A. Nagaitsev, Michel Vetterli, N. Akopov, E. Devitsin, R. P. Redwine, M. Düren, R. Mussa, V. Rappoport, S. Tessarin, Ross Milner, C. A. Miller, J. Ely, Adel Terkulov, Andrey V. Izotov, H. Avakian, Othmane Bouhali, Y. Gärber, Valeria Muccifora, E. Thomas, G. Schnell, J. Kanesaka, Martin Raithel, E. C. Aschenauer, V. Shutov, B. Bains, I. Sanjiev, Naomi C R Makins, O.V. Teryaev, F. Menden, S. Yen, Ralf Kaiser, E. Steffens, G. Gavrilov, A. Fechtchenko, P. Kitching, Ralf Hertenberger
Přispěvatelé: (Astro)-Particles Physics, Photo Conversion Materials
Jazyk: angličtina
Rok vydání: 2001
Předmět:
Quark
Nuclear and High Energy Physics
Particle physics
transverse [polarization]
media_common.quotation_subject
FRAGMENTATION FUNCTIONS
FOS: Physical sciences
ODD PARTON DISTRIBUTIONS
HERMES
NUCLEONS
transverse momentum dependence
Asymmetry
fragmentation function
energy dependence
x-dependence
High Energy Physics - Experiment
Nuclear physics
27.5 GeV
High Energy Physics - Experiment (hep-ex)
Pion
13.88.+e
ddc:530
deep inelastic scattering [positron p]
Nuclear Experiment
QC
media_common
Physics
13.60.-r
longitudinal [polarization]
electroproduction [pi0]
Scattering
QUARK
polarization [quark]
Deep inelastic scattering
Polarization (waves)
Transverse plane
DESY HERA Stor
13.87.Fh
14.20.Dh
analyzing power
polarized target [p]
High Energy Physics::Experiment
asymmetry [spin]
Lepton
experimental results
Zdroj: Physical Review D, 64(9):097101. American Physical Society
Scopus-Elsevier
Physical Review D, 64(9). American Physical Society
Physical review / D 64(9), 097101 (2001). doi:10.1103/PhysRevD.64.097101
Airapetian, A, van den Brand, J F J, Bulten, H J, Hesselink, W H A, Laziev, A & Simani, M C 2001, ' Single-spin Azimutal Asymmetries in Electroproduction of Neutral Pions in Semi-Inclusive Deep-inelastic Scattering. ', Physical Review D, vol. 64, pp. 097101 . https://doi.org/10.1103/PhysRevD.64.097101
Physical Review D, 64. American Physical Society
Airapetian, A, Bulten, H J, Hesselink, W H A, Laziev, A, Schmidt, F, Simani, M C, Thomas, E, van den Brand, J F J & de Visser, J A G M 2001, ' Single-spin azimuthal asymmetries in electroproduction of neutral pions in semi-inclusive deep-inelastic scattering ', Physical Review D, vol. 64, no. 9 . https://doi.org/10.1103/PhysRevD.64.097101
ISSN: 1550-7998
Popis: A single-spin asymmetry in the azimuthal distribution of neutral pions relative to the lepton scattering plane has been measured for the first time in deep-inelastic scattering of positrons off longitudinally polarized protons. The analysing power in the sin(phi) moment of the cross section is 0.019 +/- 0.007(stat.) +/- 0.003(syst.). This result is compared to single-spin asymmetries for charged pion production measured in the same kinematic range. The pi^0 asymmetry is of the same size as the pi^+ asymmetry and shows a similar dependence on the relevant kinematic variables. The asymmetry is described by a phenomenological calculation based on a fragmentation function that represents sensitivity to the transverse polarization of the struck quark.
Comment: 4 pages, 1 figure, replaced to correct eprint author field, 2nd replacement to correct figure; upper limit of model predictions are corrected. No correction to data or conclusions
Databáze: OpenAIRE
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