Beam-spin asymmetries from semi-inclusive pion electroproduction

W. Gohn; H. Avakian; K. Joo; M. Ungaro; K. P. Adhikari; M. Aghasyan; M. J. Amaryan; M. D. Anderson; S. Anefalos Pereira; J. Ball; N. A. Baltzell; M. Battaglieri; A. S. Biselli; J. Bono; W. J. Briscoe; W. K. Brooks; V. D. Burkert; D. S. Carman; A. Celentano; S. Chandavar; G. Charles; P. L. Cole; M. Contalbrigo; O. Cortes; V. Crede; A. D'Angelo; N. Dashyan; R. De Vita; E. De Sanctis; C. Djalali; D. Doughty; R. Dupre; A. El Alaoui; L. El Fassi; P. Eugenio; G. Fedotov; J. A. Fleming; T. Forest; M. Garçon; Y. Ghandilyan; G. P. Gilfoyle; K. L. Giovanetti; F. X. Girod; R. W. Gothe; K. A. Griffioen; B. Guegan; L. Guo; K. Hafidi; C. Hanretty; N. Harrison; Mohammad Hattawy; K. Hicks; D. Ho; M. Holtrop; C. Hyde; Y. Ilieva; D. G. Ireland; B. S. Ishkhanov; H. S. Jo; D. Keller; M. Khandaker; P. Khetarpal; W. Kim; F. J. Klein; S. Koirala; V. Kubarovsky; S. E. Kuhn; S. V. Kuleshov; P. Lenisa; K. Livingston; H. Y. Lu; I. J D Macgregor; N. Markov; M. Mayer; B. McKinnon; T. Mineeva; M. Mirazita; V. Mokeev; A. Movsisyan; P. Nadel-Turonski; S. Niccolai; I. Niculescu; M. Osipenko; A. I. Ostrovidov; L. L. Pappalardo; R. Paremuzyan; K. Park; E. Pasyuk; P. Peng; J. J. Phillips; S. Pisano; S. Pozdniakov; J. W. Price; S. Procureur; Y. Prok; A. J R Puckett; B. A. Raue; M. Ripani; Barry Ritchie; A. Rizzo; G. Rosner; P. Rossi; P. Roy; F. Sabatié; C. Salgado; D. Schott; R. A. Schumacher; E. Seder; H. Seraydaryan; Y. G. Sharabian; A. Simonyan; G. D. Smith; D. I. Sober; D. Sokhan; P. Stoler; I. I. Strakovsky; S. Stepanyan; S. Strauch; W. Tang; S. Tkachenko; B. Vernarsky; H. Voskanyan; E. Voutier; N. K. Walford; D. P. Watts; L. B. Weinstein; M. H. Wood; N. Zachariou; L. Zana; J. Zhang; I. Zonta

doi:10.1103/PhysRevD.89.072011

Beam-spin asymmetries from semi-inclusive pion electroproduction

W. Gohn, H. Avakian, K. Joo, M. Ungaro, K. P. Adhikari, M. Aghasyan, M. J. Amaryan, M. D. Anderson, S. Anefalos Pereira, J. Ball, N. A. Baltzell, M. Battaglieri, A. S. Biselli, J. Bono, W. J. Briscoe, W. K. Brooks, V. D. Burkert, D. S. Carman, A. Celentano, S. ChandavarG. Charles, P. L. Cole, M. Contalbrigo, O. Cortes, V. Crede, A. D'Angelo, N. Dashyan, R. De Vita, E. De Sanctis, C. Djalali, D. Doughty, R. Dupre, A. El Alaoui, L. El Fassi, P. Eugenio, G. Fedotov, J. A. Fleming, T. Forest, M. Garçon, Y. Ghandilyan, G. P. Gilfoyle, K. L. Giovanetti, F. X. Girod, R. W. Gothe, K. A. Griffioen, B. Guegan, L. Guo, K. Hafidi, C. Hanretty, N. Harrison, Mohammad Hattawy, K. Hicks, D. Ho, M. Holtrop, C. Hyde, Y. Ilieva, D. G. Ireland, B. S. Ishkhanov, H. S. Jo, D. Keller, M. Khandaker, P. Khetarpal, W. Kim, F. J. Klein, S. Koirala, V. Kubarovsky, S. E. Kuhn, S. V. Kuleshov, P. Lenisa, K. Livingston, H. Y. Lu, I. J D Macgregor, N. Markov, M. Mayer, B. McKinnon, T. Mineeva, M. Mirazita, V. Mokeev, A. Movsisyan, P. Nadel-Turonski, S. Niccolai, I. Niculescu, M. Osipenko, A. I. Ostrovidov, L. L. Pappalardo, R. Paremuzyan, K. Park, E. Pasyuk, P. Peng, J. J. Phillips, S. Pisano, S. Pozdniakov, J. W. Price, S. Procureur, Y. Prok, A. J R Puckett, B. A. Raue, M. Ripani, Barry Ritchie, A. Rizzo, G. Rosner, P. Rossi, P. Roy, F. Sabatié, C. Salgado, D. Schott, R. A. Schumacher, E. Seder, H. Seraydaryan, Y. G. Sharabian, A. Simonyan, G. D. Smith, D. I. Sober, D. Sokhan, P. Stoler, I. I. Strakovsky, S. Stepanyan, S. Strauch, W. Tang, S. Tkachenko, B. Vernarsky, H. Voskanyan, E. Voutier, N. K. Walford, D. P. Watts, L. B. Weinstein, M. H. Wood, N. Zachariou, L. Zana, J. Zhang, I. Zonta

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Abstract

We have measured the moment ALUsinφ corresponding to the polarized electron beam-spin asymmetry in semi-inclusive deep inelastic scattering. ALUsinφ is a twist-3 quantity providing information about quark-gluon correlations. Data were taken with the CLAS Spectrometer at Jefferson Lab using a 5.498 GeV longitudinally polarized electron beam and an unpolarized liquid hydrogen target. All three pion channels (π+, π0 and π-) were measured simultaneously over a large range of kinematics within the virtuality range Q2≈1.0-4.5GeV2. The observable was measured with better than 1% statistical precision over a large range of z, PT, xB, and Q2, which permits comparison with several reaction models. The discussed measurements provide an upgrade in statistics over previous measurements, and serve as the first evidence for the negative sign of the π- sinφ moment.

Original language	English (US)
Article number	072011
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	89
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevD.89.072011
State	Published - Apr 11 2014

ASJC Scopus subject areas

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

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10.1103/PhysRevD.89.072011

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Gohn, W., Avakian, H., Joo, K., Ungaro, M., Adhikari, K. P., Aghasyan, M., Amaryan, M. J., Anderson, M. D., Anefalos Pereira, S., Ball, J., Baltzell, N. A., Battaglieri, M., Biselli, A. S., Bono, J., Briscoe, W. J., Brooks, W. K., Burkert, V. D., Carman, D. S., Celentano, A., ... Zonta, I. (2014). Beam-spin asymmetries from semi-inclusive pion electroproduction. Physical Review D - Particles, Fields, Gravitation and Cosmology, 89(7), Article 072011. https://doi.org/10.1103/PhysRevD.89.072011

Gohn, W, Avakian, H, Joo, K, Ungaro, M, Adhikari, KP, Aghasyan, M, Amaryan, MJ, Anderson, MD, Anefalos Pereira, S, Ball, J, Baltzell, NA, Battaglieri, M, Biselli, AS, Bono, J, Briscoe, WJ, Brooks, WK, Burkert, VD, Carman, DS, Celentano, A, Chandavar, S, Charles, G, Cole, PL, Contalbrigo, M, Cortes, O, Crede, V, D'Angelo, A, Dashyan, N, De Vita, R, De Sanctis, E, Djalali, C, Doughty, D, Dupre, R, El Alaoui, A, El Fassi, L, Eugenio, P, Fedotov, G, Fleming, JA, Forest, T, Garçon, M, Ghandilyan, Y, Gilfoyle, GP, Giovanetti, KL, Girod, FX, Gothe, RW, Griffioen, KA, Guegan, B, Guo, L, Hafidi, K, Hanretty, C, Harrison, N, Hattawy, M, Hicks, K, Ho, D, Holtrop, M, Hyde, C, Ilieva, Y, Ireland, DG, Ishkhanov, BS, Jo, HS, Keller, D, Khandaker, M, Khetarpal, P, Kim, W, Klein, FJ, Koirala, S, Kubarovsky, V, Kuhn, SE, Kuleshov, SV, Lenisa, P, Livingston, K, Lu, HY, Macgregor, IJD, Markov, N, Mayer, M, McKinnon, B, Mineeva, T, Mirazita, M, Mokeev, V, Movsisyan, A, Nadel-Turonski, P, Niccolai, S, Niculescu, I, Osipenko, M, Ostrovidov, AI, Pappalardo, LL, Paremuzyan, R, Park, K, Pasyuk, E, Peng, P, Phillips, JJ, Pisano, S, Pozdniakov, S, Price, JW, Procureur, S, Prok, Y, Puckett, AJR, Raue, BA, Ripani, M, Ritchie, B, Rizzo, A, Rosner, G, Rossi, P, Roy, P, Sabatié, F, Salgado, C, Schott, D, Schumacher, RA, Seder, E, Seraydaryan, H, Sharabian, YG, Simonyan, A, Smith, GD, Sober, DI, Sokhan, D, Stoler, P, Strakovsky, II, Stepanyan, S, Strauch, S, Tang, W, Tkachenko, S, Vernarsky, B, Voskanyan, H, Voutier, E, Walford, NK, Watts, DP, Weinstein, LB, Wood, MH, Zachariou, N, Zana, L, Zhang, J & Zonta, I 2014, 'Beam-spin asymmetries from semi-inclusive pion electroproduction', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 89, no. 7, 072011. https://doi.org/10.1103/PhysRevD.89.072011

@article{f79582c394f548968e96ff09cd4a620f,

title = "Beam-spin asymmetries from semi-inclusive pion electroproduction",

abstract = "We have measured the moment ALUsinφ corresponding to the polarized electron beam-spin asymmetry in semi-inclusive deep inelastic scattering. ALUsinφ is a twist-3 quantity providing information about quark-gluon correlations. Data were taken with the CLAS Spectrometer at Jefferson Lab using a 5.498 GeV longitudinally polarized electron beam and an unpolarized liquid hydrogen target. All three pion channels (π+, π0 and π-) were measured simultaneously over a large range of kinematics within the virtuality range Q2≈1.0-4.5GeV2. The observable was measured with better than 1% statistical precision over a large range of z, PT, xB, and Q2, which permits comparison with several reaction models. The discussed measurements provide an upgrade in statistics over previous measurements, and serve as the first evidence for the negative sign of the π- sinφ moment.",

author = "W. Gohn and H. Avakian and K. Joo and M. Ungaro and Adhikari, {K. P.} and M. Aghasyan and Amaryan, {M. J.} and Anderson, {M. D.} and {Anefalos Pereira}, S. and J. Ball and Baltzell, {N. A.} and M. Battaglieri and Biselli, {A. S.} and J. Bono and Briscoe, {W. J.} and Brooks, {W. K.} and Burkert, {V. D.} and Carman, {D. S.} and A. Celentano and S. Chandavar and G. Charles and Cole, {P. L.} and M. Contalbrigo and O. Cortes and V. Crede and A. D'Angelo and N. Dashyan and {De Vita}, R. and {De Sanctis}, E. and C. Djalali and D. Doughty and R. Dupre and {El Alaoui}, A. and {El Fassi}, L. and P. Eugenio and G. Fedotov and Fleming, {J. A.} and T. Forest and M. Gar{\c c}on and Y. Ghandilyan and Gilfoyle, {G. P.} and Giovanetti, {K. L.} and Girod, {F. X.} and Gothe, {R. W.} and Griffioen, {K. A.} and B. Guegan and L. Guo and K. Hafidi and C. Hanretty and N. Harrison and Mohammad Hattawy and K. Hicks and D. Ho and M. Holtrop and C. Hyde and Y. Ilieva and Ireland, {D. G.} and Ishkhanov, {B. S.} and Jo, {H. S.} and D. Keller and M. Khandaker and P. Khetarpal and W. Kim and Klein, {F. J.} and S. Koirala and V. Kubarovsky and Kuhn, {S. E.} and Kuleshov, {S. V.} and P. Lenisa and K. Livingston and Lu, {H. Y.} and Macgregor, {I. J D} and N. Markov and M. Mayer and B. McKinnon and T. Mineeva and M. Mirazita and V. Mokeev and A. Movsisyan and P. Nadel-Turonski and S. Niccolai and I. Niculescu and M. Osipenko and Ostrovidov, {A. I.} and Pappalardo, {L. L.} and R. Paremuzyan and K. Park and E. Pasyuk and P. Peng and Phillips, {J. J.} and S. Pisano and S. Pozdniakov and Price, {J. W.} and S. Procureur and Y. Prok and Puckett, {A. J R} and Raue, {B. A.} and M. Ripani and Barry Ritchie and A. Rizzo and G. Rosner and P. Rossi and P. Roy and F. Sabati{\'e} and C. Salgado and D. Schott and Schumacher, {R. A.} and E. Seder and H. Seraydaryan and Sharabian, {Y. G.} and A. Simonyan and Smith, {G. D.} and Sober, {D. I.} and D. Sokhan and P. Stoler and Strakovsky, {I. I.} and S. Stepanyan and S. Strauch and W. Tang and S. Tkachenko and B. Vernarsky and H. Voskanyan and E. Voutier and Walford, {N. K.} and Watts, {D. P.} and Weinstein, {L. B.} and Wood, {M. H.} and N. Zachariou and L. Zana and J. Zhang and I. Zonta",

year = "2014",

month = apr,

day = "11",

doi = "10.1103/PhysRevD.89.072011",

language = "English (US)",

volume = "89",

journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",

issn = "1550-7998",

number = "7",

}

TY - JOUR

T1 - Beam-spin asymmetries from semi-inclusive pion electroproduction

AU - Gohn, W.

AU - Avakian, H.

AU - Joo, K.

AU - Ungaro, M.

AU - Adhikari, K. P.

AU - Aghasyan, M.

AU - Amaryan, M. J.

AU - Anderson, M. D.

AU - Anefalos Pereira, S.

AU - Ball, J.

AU - Baltzell, N. A.

AU - Battaglieri, M.

AU - Biselli, A. S.

AU - Bono, J.

AU - Briscoe, W. J.

AU - Brooks, W. K.

AU - Burkert, V. D.

AU - Carman, D. S.

AU - Celentano, A.

AU - Chandavar, S.

AU - Charles, G.

AU - Cole, P. L.

AU - Contalbrigo, M.

AU - Cortes, O.

AU - Crede, V.

AU - D'Angelo, A.

AU - Dashyan, N.

AU - De Vita, R.

AU - De Sanctis, E.

AU - Djalali, C.

AU - Doughty, D.

AU - Dupre, R.

AU - El Alaoui, A.

AU - El Fassi, L.

AU - Eugenio, P.

AU - Fedotov, G.

AU - Fleming, J. A.

AU - Forest, T.

AU - Garçon, M.

AU - Ghandilyan, Y.

AU - Gilfoyle, G. P.

AU - Giovanetti, K. L.

AU - Girod, F. X.

AU - Gothe, R. W.

AU - Griffioen, K. A.

AU - Guegan, B.

AU - Guo, L.

AU - Hafidi, K.

AU - Hanretty, C.

AU - Harrison, N.

AU - Hattawy, Mohammad

AU - Hicks, K.

AU - Ho, D.

AU - Holtrop, M.

AU - Hyde, C.

AU - Ilieva, Y.

AU - Ireland, D. G.

AU - Ishkhanov, B. S.

AU - Jo, H. S.

AU - Keller, D.

AU - Khandaker, M.

AU - Khetarpal, P.

AU - Kim, W.

AU - Klein, F. J.

AU - Koirala, S.

AU - Kubarovsky, V.

AU - Kuhn, S. E.

AU - Kuleshov, S. V.

AU - Lenisa, P.

AU - Livingston, K.

AU - Lu, H. Y.

AU - Macgregor, I. J D

AU - Markov, N.

AU - Mayer, M.

AU - McKinnon, B.

AU - Mineeva, T.

AU - Mirazita, M.

AU - Mokeev, V.

AU - Movsisyan, A.

AU - Nadel-Turonski, P.

AU - Niccolai, S.

AU - Niculescu, I.

AU - Osipenko, M.

AU - Ostrovidov, A. I.

AU - Pappalardo, L. L.

AU - Paremuzyan, R.

AU - Park, K.

AU - Pasyuk, E.

AU - Peng, P.

AU - Phillips, J. J.

AU - Pisano, S.

AU - Pozdniakov, S.

AU - Price, J. W.

AU - Procureur, S.

AU - Prok, Y.

AU - Puckett, A. J R

AU - Raue, B. A.

AU - Ripani, M.

AU - Ritchie, Barry

AU - Rizzo, A.

AU - Rosner, G.

AU - Rossi, P.

AU - Roy, P.

AU - Sabatié, F.

AU - Salgado, C.

AU - Schott, D.

AU - Schumacher, R. A.

AU - Seder, E.

AU - Seraydaryan, H.

AU - Sharabian, Y. G.

AU - Simonyan, A.

AU - Smith, G. D.

AU - Sober, D. I.

AU - Sokhan, D.

AU - Stoler, P.

AU - Strakovsky, I. I.

AU - Stepanyan, S.

AU - Strauch, S.

AU - Tang, W.

AU - Tkachenko, S.

AU - Vernarsky, B.

AU - Voskanyan, H.

AU - Voutier, E.

AU - Walford, N. K.

AU - Watts, D. P.

AU - Weinstein, L. B.

AU - Wood, M. H.

AU - Zachariou, N.

AU - Zana, L.

AU - Zhang, J.

AU - Zonta, I.

PY - 2014/4/11

Y1 - 2014/4/11

N2 - We have measured the moment ALUsinφ corresponding to the polarized electron beam-spin asymmetry in semi-inclusive deep inelastic scattering. ALUsinφ is a twist-3 quantity providing information about quark-gluon correlations. Data were taken with the CLAS Spectrometer at Jefferson Lab using a 5.498 GeV longitudinally polarized electron beam and an unpolarized liquid hydrogen target. All three pion channels (π+, π0 and π-) were measured simultaneously over a large range of kinematics within the virtuality range Q2≈1.0-4.5GeV2. The observable was measured with better than 1% statistical precision over a large range of z, PT, xB, and Q2, which permits comparison with several reaction models. The discussed measurements provide an upgrade in statistics over previous measurements, and serve as the first evidence for the negative sign of the π- sinφ moment.

AB - We have measured the moment ALUsinφ corresponding to the polarized electron beam-spin asymmetry in semi-inclusive deep inelastic scattering. ALUsinφ is a twist-3 quantity providing information about quark-gluon correlations. Data were taken with the CLAS Spectrometer at Jefferson Lab using a 5.498 GeV longitudinally polarized electron beam and an unpolarized liquid hydrogen target. All three pion channels (π+, π0 and π-) were measured simultaneously over a large range of kinematics within the virtuality range Q2≈1.0-4.5GeV2. The observable was measured with better than 1% statistical precision over a large range of z, PT, xB, and Q2, which permits comparison with several reaction models. The discussed measurements provide an upgrade in statistics over previous measurements, and serve as the first evidence for the negative sign of the π- sinφ moment.

UR - http://www.scopus.com/inward/record.url?scp=84898617920&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84898617920&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.89.072011

DO - 10.1103/PhysRevD.89.072011

M3 - Article

AN - SCOPUS:84898617920

SN - 1550-7998

VL - 89

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

IS - 7

M1 - 072011

ER -

Beam-spin asymmetries from semi-inclusive pion electroproduction

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