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

A. Airapetian, N. Akopov, Z. Akopov, M. Amarian, E. C. Aschenauer, H. Avakian, R. Avakian, A. Avetissian, E. Avetissian, P. Bailey, B. Bains, V. Baturin, C. Baumgarten, M. Beckmann, S. Belostotski, S. Bernreuther, N. Bianchi, H. Böttcher, A. Borissov, Othmane BouhaliM. Bouwhuis, J. Brack, S. Brauksiepe, W. Brückner, A. Brüll, I. Brunn, H. J. Bulten, G. P. Capitani, P. Chumney, E. Cisbani, G. Ciullo, G. R. Court, P. F. Dalpiaz, R. De Leo, L. De Nardo, E. De Sanctis, D. De Schepper, E. Devitsin, P. K.A. De Witt Huberts, P. Di Nezza, V. Djordjadze, M. Düren, M. Ehrenfried, G. Elbakian, F. Ellinghaus, J. Ely, A. Fantoni, A. Fechtchenko, L. Felawka, B. W. Filippone, H. Fischer, B. Fox, J. Franz, S. Frullani, Y. Gärber, F. Garibaldi, E. Garutti, G. Gavrilov, V. Gharibyan, A. Golendukhin, G. Graw, O. Grebeniouk, P. W. Green, L. G. Greeniaus, A. Gute, W. Haeberli, K. Hafidi, M. Hartig, D. Hasch, D. Heesbeen, F. H. Heinsius, M. Henoch, R. Hertenberger, W. H.A. Hesselink, G. Hofman, Y. Holler, R. J. Holt, B. Hommez, G. Iarygin, A. Izotov, H. E. Jackson, A. Jgoun, P. Jung, R. Kaiser, J. Kanesaka, E. Kinney, A. Kisselev, P. Kitching, H. Kobayashi, N. Koch, K. Königsmann, H. Kolster, V. Korotkov, E. Kotik, V. Kozlov, B. Krauss, V. G. Krivokhijine, G. Kyle, L. Lagamba, A. Laziev, P. Lenisa, P. Liebing, T. Lindemann, W. Lorenzon, A. Maas, N. C.R. Makins, H. Marukyan, F. Masoli, M. McAndrew, K. McIlhany, F. Meissner, F. Menden, N. Meyners, O. Mikloukho, C. A. Miller, R. Milner, V. Muccifora, R. Mussa, A. Nagaitsev, E. Nappi, Y. Naryshkin, A. Nass, K. Negodaeva, W. D. Nowak, K. Oganessyan, T. G. O'Neill, B. R. Owen, S. F. Pate, S. Potashov, D. H. Potterveld, M. Raithel, G. Rakness, V. Rappoport, R. Redwine, D. Reggiani, A. R. Reolon, K. Rith, D. Robinson, A. Rostomyan, M. Ruh, D. Ryckbosch, Y. Sakemi, I. Sanjiev, F. Sato, I. Savin, C. Scarlett, A. Schäfer, C. Schill, F. Schmidt, G. Schnell, K. P. Schüler, A. Schwind, J. Seibert, B. Seitz, T. A. Shibata, V. Shutov, M. C. Simani, A. Simon, K. Sinram, E. Steffens, J. J.M. Steijger, J. Stewart, U. Stösslein, K. Suetsugu, S. Taroian, A. Terkulov, O. Teryaev, S. Tessarin, E. Thomas, B. Tipton, M. Tytgat, G. M. Urciuoli, J. F.J. Van Den Brand, G. Van Der Steenhoven, R. Van De Vyver, J. J. Van Hunen, M. C. Vetterli, V. Vikhrov, M. G. Vincter, J. Visser, C. Weiskopf, J. Wendland, J. Wilbert, T. Wise, S. Yen, S. Yoneyama, H. Zohrabian

Research output: Contribution to journalArticle

207 Citations (Scopus)

Abstract

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 analyzing power in the sin φ 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 π0 asymmetry is of the same size as the π+ 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.

Original languageEnglish
Article number097101
JournalPhysical Review D
Volume64
Issue number9
Publication statusPublished - 1 Nov 2001
Externally publishedYes

Fingerprint

inelastic scattering
pions
asymmetry
kinematics
leptons
positrons
fragmentation
quarks
moments
protons
sensitivity
cross sections
polarization
scattering

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

Cite this

Airapetian, A., Akopov, N., Akopov, Z., Amarian, M., Aschenauer, E. C., Avakian, H., ... Zohrabian, H. (2001). Single-spin azimuthal asymmetries in electroproduction of neutral pions in semi-inclusive deep-inelastic scattering. Physical Review D, 64(9), [097101].

Single-spin azimuthal asymmetries in electroproduction of neutral pions in semi-inclusive deep-inelastic scattering. / Airapetian, A.; Akopov, N.; Akopov, Z.; Amarian, M.; Aschenauer, E. C.; Avakian, H.; Avakian, R.; Avetissian, A.; Avetissian, E.; Bailey, P.; Bains, B.; Baturin, V.; Baumgarten, C.; Beckmann, M.; Belostotski, S.; Bernreuther, S.; Bianchi, N.; Böttcher, H.; Borissov, A.; Bouhali, Othmane; Bouwhuis, M.; Brack, J.; Brauksiepe, S.; Brückner, W.; Brüll, A.; Brunn, I.; Bulten, H. J.; Capitani, G. P.; Chumney, P.; Cisbani, E.; Ciullo, G.; Court, G. R.; Dalpiaz, P. F.; De Leo, R.; De Nardo, L.; De Sanctis, E.; De Schepper, D.; Devitsin, E.; De Witt Huberts, P. K.A.; Di Nezza, P.; Djordjadze, V.; Düren, M.; Ehrenfried, M.; Elbakian, G.; Ellinghaus, F.; Ely, J.; Fantoni, A.; Fechtchenko, A.; Felawka, L.; Filippone, B. W.; Fischer, H.; Fox, B.; Franz, J.; Frullani, S.; Gärber, Y.; Garibaldi, F.; Garutti, E.; Gavrilov, G.; Gharibyan, V.; Golendukhin, A.; Graw, G.; Grebeniouk, O.; Green, P. W.; Greeniaus, L. G.; Gute, A.; Haeberli, W.; Hafidi, K.; Hartig, M.; Hasch, D.; Heesbeen, D.; Heinsius, F. H.; Henoch, M.; Hertenberger, R.; Hesselink, W. H.A.; Hofman, G.; Holler, Y.; Holt, R. J.; Hommez, B.; Iarygin, G.; Izotov, A.; Jackson, H. E.; Jgoun, A.; Jung, P.; Kaiser, R.; Kanesaka, J.; Kinney, E.; Kisselev, A.; Kitching, P.; Kobayashi, H.; Koch, N.; Königsmann, K.; Kolster, H.; Korotkov, V.; Kotik, E.; Kozlov, V.; Krauss, B.; Krivokhijine, V. G.; Kyle, G.; Lagamba, L.; Laziev, A.; Lenisa, P.; Liebing, P.; Lindemann, T.; Lorenzon, W.; Maas, A.; Makins, N. C.R.; Marukyan, H.; Masoli, F.; McAndrew, M.; McIlhany, K.; Meissner, F.; Menden, F.; Meyners, N.; Mikloukho, O.; Miller, C. A.; Milner, R.; Muccifora, V.; Mussa, R.; Nagaitsev, A.; Nappi, E.; Naryshkin, Y.; Nass, A.; Negodaeva, K.; Nowak, W. D.; Oganessyan, K.; O'Neill, T. G.; Owen, B. R.; Pate, S. F.; Potashov, S.; Potterveld, D. H.; Raithel, M.; Rakness, G.; Rappoport, V.; Redwine, R.; Reggiani, D.; Reolon, A. R.; Rith, K.; Robinson, D.; Rostomyan, A.; Ruh, M.; Ryckbosch, D.; Sakemi, Y.; Sanjiev, I.; Sato, F.; Savin, I.; Scarlett, C.; Schäfer, A.; Schill, C.; Schmidt, F.; Schnell, G.; Schüler, K. P.; Schwind, A.; Seibert, J.; Seitz, B.; Shibata, T. A.; Shutov, V.; Simani, M. C.; Simon, A.; Sinram, K.; Steffens, E.; Steijger, J. J.M.; Stewart, J.; Stösslein, U.; Suetsugu, K.; Taroian, S.; Terkulov, A.; Teryaev, O.; Tessarin, S.; Thomas, E.; Tipton, B.; Tytgat, M.; Urciuoli, G. M.; Van Den Brand, J. F.J.; Van Der Steenhoven, G.; Van De Vyver, R.; Van Hunen, J. J.; Vetterli, M. C.; Vikhrov, V.; Vincter, M. G.; Visser, J.; Weiskopf, C.; Wendland, J.; Wilbert, J.; Wise, T.; Yen, S.; Yoneyama, S.; Zohrabian, H.

In: Physical Review D, Vol. 64, No. 9, 097101, 01.11.2001.

Research output: Contribution to journalArticle

Airapetian, A, Akopov, N, Akopov, Z, Amarian, M, Aschenauer, EC, Avakian, H, Avakian, R, Avetissian, A, Avetissian, E, Bailey, P, Bains, B, Baturin, V, Baumgarten, C, Beckmann, M, Belostotski, S, Bernreuther, S, Bianchi, N, Böttcher, H, Borissov, A, Bouhali, O, Bouwhuis, M, Brack, J, Brauksiepe, S, Brückner, W, Brüll, A, Brunn, I, Bulten, HJ, Capitani, GP, Chumney, P, Cisbani, E, Ciullo, G, Court, GR, Dalpiaz, PF, De Leo, R, De Nardo, L, De Sanctis, E, De Schepper, D, Devitsin, E, De Witt Huberts, PKA, Di Nezza, P, Djordjadze, V, Düren, M, Ehrenfried, M, Elbakian, G, Ellinghaus, F, Ely, J, Fantoni, A, Fechtchenko, A, Felawka, L, Filippone, BW, Fischer, H, Fox, B, Franz, J, Frullani, S, Gärber, Y, Garibaldi, F, Garutti, E, Gavrilov, G, Gharibyan, V, Golendukhin, A, Graw, G, Grebeniouk, O, Green, PW, Greeniaus, LG, Gute, A, Haeberli, W, Hafidi, K, Hartig, M, Hasch, D, Heesbeen, D, Heinsius, FH, Henoch, M, Hertenberger, R, Hesselink, WHA, Hofman, G, Holler, Y, Holt, RJ, Hommez, B, Iarygin, G, Izotov, A, Jackson, HE, Jgoun, A, Jung, P, Kaiser, R, Kanesaka, J, Kinney, E, Kisselev, A, Kitching, P, Kobayashi, H, Koch, N, Königsmann, K, Kolster, H, Korotkov, V, Kotik, E, Kozlov, V, Krauss, B, Krivokhijine, VG, Kyle, G, Lagamba, L, Laziev, A, Lenisa, P, Liebing, P, Lindemann, T, Lorenzon, W, Maas, A, Makins, NCR, Marukyan, H, Masoli, F, McAndrew, M, McIlhany, K, Meissner, F, Menden, F, Meyners, N, Mikloukho, O, Miller, CA, Milner, R, Muccifora, V, Mussa, R, Nagaitsev, A, Nappi, E, Naryshkin, Y, Nass, A, Negodaeva, K, Nowak, WD, Oganessyan, K, O'Neill, TG, Owen, BR, Pate, SF, Potashov, S, Potterveld, DH, Raithel, M, Rakness, G, Rappoport, V, Redwine, R, Reggiani, D, Reolon, AR, Rith, K, Robinson, D, Rostomyan, A, Ruh, M, Ryckbosch, D, Sakemi, Y, Sanjiev, I, Sato, F, Savin, I, Scarlett, C, Schäfer, A, Schill, C, Schmidt, F, Schnell, G, Schüler, KP, Schwind, A, Seibert, J, Seitz, B, Shibata, TA, Shutov, V, Simani, MC, Simon, A, Sinram, K, Steffens, E, Steijger, JJM, Stewart, J, Stösslein, U, Suetsugu, K, Taroian, S, Terkulov, A, Teryaev, O, Tessarin, S, Thomas, E, Tipton, B, Tytgat, M, Urciuoli, GM, Van Den Brand, JFJ, Van Der Steenhoven, G, Van De Vyver, R, Van Hunen, JJ, Vetterli, MC, Vikhrov, V, Vincter, MG, Visser, J, Weiskopf, C, Wendland, J, Wilbert, J, Wise, T, Yen, S, Yoneyama, S & Zohrabian, H 2001, 'Single-spin azimuthal asymmetries in electroproduction of neutral pions in semi-inclusive deep-inelastic scattering', Physical Review D, vol. 64, no. 9, 097101.
Airapetian A, Akopov N, Akopov Z, Amarian M, Aschenauer EC, Avakian H et al. Single-spin azimuthal asymmetries in electroproduction of neutral pions in semi-inclusive deep-inelastic scattering. Physical Review D. 2001 Nov 1;64(9). 097101.
Airapetian, A. ; Akopov, N. ; Akopov, Z. ; Amarian, M. ; Aschenauer, E. C. ; Avakian, H. ; Avakian, R. ; Avetissian, A. ; Avetissian, E. ; Bailey, P. ; Bains, B. ; Baturin, V. ; Baumgarten, C. ; Beckmann, M. ; Belostotski, S. ; Bernreuther, S. ; Bianchi, N. ; Böttcher, H. ; Borissov, A. ; Bouhali, Othmane ; Bouwhuis, M. ; Brack, J. ; Brauksiepe, S. ; Brückner, W. ; Brüll, A. ; Brunn, I. ; Bulten, H. J. ; Capitani, G. P. ; Chumney, P. ; Cisbani, E. ; Ciullo, G. ; Court, G. R. ; Dalpiaz, P. F. ; De Leo, R. ; De Nardo, L. ; De Sanctis, E. ; De Schepper, D. ; Devitsin, E. ; De Witt Huberts, P. K.A. ; Di Nezza, P. ; Djordjadze, V. ; Düren, M. ; Ehrenfried, M. ; Elbakian, G. ; Ellinghaus, F. ; Ely, J. ; Fantoni, A. ; Fechtchenko, A. ; Felawka, L. ; Filippone, B. W. ; Fischer, H. ; Fox, B. ; Franz, J. ; Frullani, S. ; Gärber, Y. ; Garibaldi, F. ; Garutti, E. ; Gavrilov, G. ; Gharibyan, V. ; Golendukhin, A. ; Graw, G. ; Grebeniouk, O. ; Green, P. W. ; Greeniaus, L. G. ; Gute, A. ; Haeberli, W. ; Hafidi, K. ; Hartig, M. ; Hasch, D. ; Heesbeen, D. ; Heinsius, F. H. ; Henoch, M. ; Hertenberger, R. ; Hesselink, W. H.A. ; Hofman, G. ; Holler, Y. ; Holt, R. J. ; Hommez, B. ; Iarygin, G. ; Izotov, A. ; Jackson, H. E. ; Jgoun, A. ; Jung, P. ; Kaiser, R. ; Kanesaka, J. ; Kinney, E. ; Kisselev, A. ; Kitching, P. ; Kobayashi, H. ; Koch, N. ; Königsmann, K. ; Kolster, H. ; Korotkov, V. ; Kotik, E. ; Kozlov, V. ; Krauss, B. ; Krivokhijine, V. G. ; Kyle, G. ; Lagamba, L. ; Laziev, A. ; Lenisa, P. ; Liebing, P. ; Lindemann, T. ; Lorenzon, W. ; Maas, A. ; Makins, N. C.R. ; Marukyan, H. ; Masoli, F. ; McAndrew, M. ; McIlhany, K. ; Meissner, F. ; Menden, F. ; Meyners, N. ; Mikloukho, O. ; Miller, C. A. ; Milner, R. ; Muccifora, V. ; Mussa, R. ; Nagaitsev, A. ; Nappi, E. ; Naryshkin, Y. ; Nass, A. ; Negodaeva, K. ; Nowak, W. D. ; Oganessyan, K. ; O'Neill, T. G. ; Owen, B. R. ; Pate, S. F. ; Potashov, S. ; Potterveld, D. H. ; Raithel, M. ; Rakness, G. ; Rappoport, V. ; Redwine, R. ; Reggiani, D. ; Reolon, A. R. ; Rith, K. ; Robinson, D. ; Rostomyan, A. ; Ruh, M. ; Ryckbosch, D. ; Sakemi, Y. ; Sanjiev, I. ; Sato, F. ; Savin, I. ; Scarlett, C. ; Schäfer, A. ; Schill, C. ; Schmidt, F. ; Schnell, G. ; Schüler, K. P. ; Schwind, A. ; Seibert, J. ; Seitz, B. ; Shibata, T. A. ; Shutov, V. ; Simani, M. C. ; Simon, A. ; Sinram, K. ; Steffens, E. ; Steijger, J. J.M. ; Stewart, J. ; Stösslein, U. ; Suetsugu, K. ; Taroian, S. ; Terkulov, A. ; Teryaev, O. ; Tessarin, S. ; Thomas, E. ; Tipton, B. ; Tytgat, M. ; Urciuoli, G. M. ; Van Den Brand, J. F.J. ; Van Der Steenhoven, G. ; Van De Vyver, R. ; Van Hunen, J. J. ; Vetterli, M. C. ; Vikhrov, V. ; Vincter, M. G. ; Visser, J. ; Weiskopf, C. ; Wendland, J. ; Wilbert, J. ; Wise, T. ; Yen, S. ; Yoneyama, S. ; Zohrabian, H. / Single-spin azimuthal asymmetries in electroproduction of neutral pions in semi-inclusive deep-inelastic scattering. In: Physical Review D. 2001 ; Vol. 64, No. 9.
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title = "Single-spin azimuthal asymmetries in electroproduction of neutral pions in semi-inclusive deep-inelastic scattering",
abstract = "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 analyzing power in the sin φ 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 π0 asymmetry is of the same size as the π+ 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.",
author = "A. Airapetian and N. Akopov and Z. Akopov and M. Amarian and Aschenauer, {E. C.} and H. Avakian and R. Avakian and A. Avetissian and E. Avetissian and P. Bailey and B. Bains and V. Baturin and C. Baumgarten and M. Beckmann and S. Belostotski and S. Bernreuther and N. Bianchi and H. B{\"o}ttcher and A. Borissov and Othmane Bouhali and M. Bouwhuis and J. Brack and S. Brauksiepe and W. Br{\"u}ckner and A. Br{\"u}ll and I. Brunn and Bulten, {H. J.} and Capitani, {G. P.} and P. Chumney and E. Cisbani and G. Ciullo and Court, {G. R.} and Dalpiaz, {P. F.} and {De Leo}, R. and {De Nardo}, L. and {De Sanctis}, E. and {De Schepper}, D. and E. Devitsin and {De Witt Huberts}, {P. K.A.} and {Di Nezza}, P. and V. Djordjadze and M. D{\"u}ren and M. Ehrenfried and G. Elbakian and F. Ellinghaus and J. Ely and A. Fantoni and A. Fechtchenko and L. Felawka and Filippone, {B. W.} and H. Fischer and B. Fox and J. Franz and S. Frullani and Y. G{\"a}rber and F. Garibaldi and E. Garutti and G. Gavrilov and V. Gharibyan and A. Golendukhin and G. Graw and O. Grebeniouk and Green, {P. W.} and Greeniaus, {L. G.} and A. Gute and W. Haeberli and K. Hafidi and M. Hartig and D. Hasch and D. Heesbeen and Heinsius, {F. H.} and M. Henoch and R. Hertenberger and Hesselink, {W. H.A.} and G. Hofman and Y. Holler and Holt, {R. J.} and B. Hommez and G. Iarygin and A. Izotov and Jackson, {H. E.} and A. Jgoun and P. Jung and R. Kaiser and J. Kanesaka and E. Kinney and A. Kisselev and P. Kitching and H. Kobayashi and N. Koch and K. K{\"o}nigsmann and H. Kolster and V. Korotkov and E. Kotik and V. Kozlov and B. Krauss and Krivokhijine, {V. G.} and G. Kyle and L. Lagamba and A. Laziev and P. Lenisa and P. Liebing and T. Lindemann and W. Lorenzon and A. Maas and Makins, {N. C.R.} and H. Marukyan and F. Masoli and M. McAndrew and K. McIlhany and F. Meissner and F. Menden and N. Meyners and O. Mikloukho and Miller, {C. A.} and R. Milner and V. Muccifora and R. Mussa and A. Nagaitsev and E. Nappi and Y. Naryshkin and A. Nass and K. Negodaeva and Nowak, {W. D.} and K. Oganessyan and O'Neill, {T. G.} and Owen, {B. R.} and Pate, {S. F.} and S. Potashov and Potterveld, {D. H.} and M. Raithel and G. Rakness and V. Rappoport and R. Redwine and D. Reggiani and Reolon, {A. R.} and K. Rith and D. Robinson and A. Rostomyan and M. Ruh and D. Ryckbosch and Y. Sakemi and I. Sanjiev and F. Sato and I. Savin and C. Scarlett and A. Sch{\"a}fer and C. Schill and F. Schmidt and G. Schnell and Sch{\"u}ler, {K. P.} and A. Schwind and J. Seibert and B. Seitz and Shibata, {T. A.} and V. Shutov and Simani, {M. C.} and A. Simon and K. Sinram and E. Steffens and Steijger, {J. J.M.} and J. Stewart and U. St{\"o}sslein and K. Suetsugu and S. Taroian and A. Terkulov and O. Teryaev and S. Tessarin and E. Thomas and B. Tipton and M. Tytgat and Urciuoli, {G. M.} and {Van Den Brand}, {J. F.J.} and {Van Der Steenhoven}, G. and {Van De Vyver}, R. and {Van Hunen}, {J. J.} and Vetterli, {M. C.} and V. Vikhrov and Vincter, {M. G.} and J. Visser and C. Weiskopf and J. Wendland and J. Wilbert and T. Wise and S. Yen and S. Yoneyama and H. Zohrabian",
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journal = "Physical review D: Particles and fields",
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TY - JOUR

T1 - Single-spin azimuthal asymmetries in electroproduction of neutral pions in semi-inclusive deep-inelastic scattering

AU - Airapetian, A.

AU - Akopov, N.

AU - Akopov, Z.

AU - Amarian, M.

AU - Aschenauer, E. C.

AU - Avakian, H.

AU - Avakian, R.

AU - Avetissian, A.

AU - Avetissian, E.

AU - Bailey, P.

AU - Bains, B.

AU - Baturin, V.

AU - Baumgarten, C.

AU - Beckmann, M.

AU - Belostotski, S.

AU - Bernreuther, S.

AU - Bianchi, N.

AU - Böttcher, H.

AU - Borissov, A.

AU - Bouhali, Othmane

AU - Bouwhuis, M.

AU - Brack, J.

AU - Brauksiepe, S.

AU - Brückner, W.

AU - Brüll, A.

AU - Brunn, I.

AU - Bulten, H. J.

AU - Capitani, G. P.

AU - Chumney, P.

AU - Cisbani, E.

AU - Ciullo, G.

AU - Court, G. R.

AU - Dalpiaz, P. F.

AU - De Leo, R.

AU - De Nardo, L.

AU - De Sanctis, E.

AU - De Schepper, D.

AU - Devitsin, E.

AU - De Witt Huberts, P. K.A.

AU - Di Nezza, P.

AU - Djordjadze, V.

AU - Düren, M.

AU - Ehrenfried, M.

AU - Elbakian, G.

AU - Ellinghaus, F.

AU - Ely, J.

AU - Fantoni, A.

AU - Fechtchenko, A.

AU - Felawka, L.

AU - Filippone, B. W.

AU - Fischer, H.

AU - Fox, B.

AU - Franz, J.

AU - Frullani, S.

AU - Gärber, Y.

AU - Garibaldi, F.

AU - Garutti, E.

AU - Gavrilov, G.

AU - Gharibyan, V.

AU - Golendukhin, A.

AU - Graw, G.

AU - Grebeniouk, O.

AU - Green, P. W.

AU - Greeniaus, L. G.

AU - Gute, A.

AU - Haeberli, W.

AU - Hafidi, K.

AU - Hartig, M.

AU - Hasch, D.

AU - Heesbeen, D.

AU - Heinsius, F. H.

AU - Henoch, M.

AU - Hertenberger, R.

AU - Hesselink, W. H.A.

AU - Hofman, G.

AU - Holler, Y.

AU - Holt, R. J.

AU - Hommez, B.

AU - Iarygin, G.

AU - Izotov, A.

AU - Jackson, H. E.

AU - Jgoun, A.

AU - Jung, P.

AU - Kaiser, R.

AU - Kanesaka, J.

AU - Kinney, E.

AU - Kisselev, A.

AU - Kitching, P.

AU - Kobayashi, H.

AU - Koch, N.

AU - Königsmann, K.

AU - Kolster, H.

AU - Korotkov, V.

AU - Kotik, E.

AU - Kozlov, V.

AU - Krauss, B.

AU - Krivokhijine, V. G.

AU - Kyle, G.

AU - Lagamba, L.

AU - Laziev, A.

AU - Lenisa, P.

AU - Liebing, P.

AU - Lindemann, T.

AU - Lorenzon, W.

AU - Maas, A.

AU - Makins, N. C.R.

AU - Marukyan, H.

AU - Masoli, F.

AU - McAndrew, M.

AU - McIlhany, K.

AU - Meissner, F.

AU - Menden, F.

AU - Meyners, N.

AU - Mikloukho, O.

AU - Miller, C. A.

AU - Milner, R.

AU - Muccifora, V.

AU - Mussa, R.

AU - Nagaitsev, A.

AU - Nappi, E.

AU - Naryshkin, Y.

AU - Nass, A.

AU - Negodaeva, K.

AU - Nowak, W. D.

AU - Oganessyan, K.

AU - O'Neill, T. G.

AU - Owen, B. R.

AU - Pate, S. F.

AU - Potashov, S.

AU - Potterveld, D. H.

AU - Raithel, M.

AU - Rakness, G.

AU - Rappoport, V.

AU - Redwine, R.

AU - Reggiani, D.

AU - Reolon, A. R.

AU - Rith, K.

AU - Robinson, D.

AU - Rostomyan, A.

AU - Ruh, M.

AU - Ryckbosch, D.

AU - Sakemi, Y.

AU - Sanjiev, I.

AU - Sato, F.

AU - Savin, I.

AU - Scarlett, C.

AU - Schäfer, A.

AU - Schill, C.

AU - Schmidt, F.

AU - Schnell, G.

AU - Schüler, K. P.

AU - Schwind, A.

AU - Seibert, J.

AU - Seitz, B.

AU - Shibata, T. A.

AU - Shutov, V.

AU - Simani, M. C.

AU - Simon, A.

AU - Sinram, K.

AU - Steffens, E.

AU - Steijger, J. J.M.

AU - Stewart, J.

AU - Stösslein, U.

AU - Suetsugu, K.

AU - Taroian, S.

AU - Terkulov, A.

AU - Teryaev, O.

AU - Tessarin, S.

AU - Thomas, E.

AU - Tipton, B.

AU - Tytgat, M.

AU - Urciuoli, G. M.

AU - Van Den Brand, J. F.J.

AU - Van Der Steenhoven, G.

AU - Van De Vyver, R.

AU - Van Hunen, J. J.

AU - Vetterli, M. C.

AU - Vikhrov, V.

AU - Vincter, M. G.

AU - Visser, J.

AU - Weiskopf, C.

AU - Wendland, J.

AU - Wilbert, J.

AU - Wise, T.

AU - Yen, S.

AU - Yoneyama, S.

AU - Zohrabian, H.

PY - 2001/11/1

Y1 - 2001/11/1

N2 - 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 analyzing power in the sin φ 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 π0 asymmetry is of the same size as the π+ 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.

AB - 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 analyzing power in the sin φ 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 π0 asymmetry is of the same size as the π+ 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.

UR - http://www.scopus.com/inward/record.url?scp=17944397217&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=17944397217&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:17944397217

VL - 64

JO - Physical review D: Particles and fields

JF - Physical review D: Particles and fields

SN - 1550-7998

IS - 9

M1 - 097101

ER -