First measurement of the double spin asymmetry in e→ p→ → e′ π+ n in the resonance region

R. de Vita; M. Anghinolfi; V. D. Burkert; G. E. Dodge; R. Minehart; M. Taiuti; H. Weller; G. Adams; M. J. Amaryan; E. Anciant; D. S. Armstrong; B. Asavapibhop; G. Asryan; G. Audit; T. Auger; H. Avakian; H. Bagdasaryan; J. P. Ball; S. Barrow; M. Battaglieri; K. Beard; M. Bektasoglu; N. Bianchi; A. S. Biselli; S. Boiarinov; B. E. Bonner; P. Bosted; S. Bouchigny; D. Branford; W. K. Brooks; S. Bueltmann; J. R. Calarco; G. P. Capitani; D. S. Carman; B. Carnahan; A. Cazes; L. Ciciani; P. L. Cole; A. Coleman; J. Connelly; D. Cords; P. Corvisiero; D. Crabb; H. Crannell; J. P. Cummings; E. de Sanctis; P. V. Degtyarenko; R. Demirchyan; H. Denizli; L. Dennis; K. V. Dharmawardane; K. S. Dhuga; C. Djalali; D. Doughty; P. Dragovitsch; M. Dugger; S. Dytman; M. Eckhause; H. Egiyan; K. S. Egiyan; L. Elouadrhiri; A. Empl; L. Farhi; R. Fatemi; R. J. Feuerbach; J. Ficenec; T. A. Forest; V. Frolov; H. Funsten; S. J. Gaff; M. Gai; M. Garçon; G. Gavalian; S. Gilad; G. P. Gilfoyle; K. L. Giovanetti; P. Girard; E. Golovatch; K. Griffioen; M. Guidal; M. Guillo; V. Gyurjyan; C. Hadjidakis; D. Hancock; J. Hardie; D. Heddle; P. Heimberg; F. W. Hersman; K. Hicks; R. S. Hicks; M. Holtrop; J. Hu; C. E. Hyde-Wright; B. S. Ishkanov; M. M. Ito; D. Jenkins; K. Joo; J. H. Kelley; J. D. Kellie; M. Khandaker; K. Y. Kim; K. Kim; W. Kim; A. Klein; F. J. Klein; M. Klusman; M. Kossov; L. H. Kramer; Y. Kuang; S. E. Kuhn; J. Lachniet; J. M. Laget; D. Lawrence; J. Li; K. Livingston; A. Longhi; K. Loukachine; M. Lucas; W. Major; J. J. Manak; C. Marchand; S. McAleer; J. McCarthy; J. W.C. McNabb; B. A. Mecking; M. D. Mestayer; C. A. Meyer; K. Mikhailov; M. Mirazita; R. Miskimen; V. Mokeev; V. Muccifora; J. Mueller; G. S. Mutchler; J. Napolitano; S. O. Nelson; G. Niculescu; I. Niculescu; B. B. Niczyporuk; R. A. Niyazov; A. K. Opper; G. V. O'Rielly; M. Osipenko; K. Park; E. Pasyuk; G. Peterson; S. A. Philips; N. Pivnyuk; D. Pocanic; O. Pogorelko; E. Polli; S. Pozdniakov; B. M. Preedom; J. W. Price; Y. Prok; D. Protopopescu; L. M. Qin; B. A. Raue; A. R. Reolon; G. Riccardi; G. Ricco; M. Ripani; B. G. Ritchie; S. Rock; F. Ronchetti; P. Rossi; D. Rowntree; P. D. Rubin; F. Sabatié; K. Sabourov; C. Salgado; V. Sapunenko; M. Sargsyan; R. A. Schumacher; V. S. Serov; A. Shafi; Y. G. Sharabian; J. Shaw; A. V. Skabelin; E. S. Smith; T. Smith; L. C. Smith; D. I. Sober; L. Sorrell; M. Spraker; A. Stavinsky; S. Stepanyan; P. Stoler; I. I. Strakovsky; S. Taylor; D. J. Tedeschi; R. Thompson; L. Todor; M. Ungaro; M. F. Vineyard; A. V. Vlassov; K. Wang; L. B. Weinstein; A. Weisberg; D. P. Weygand; C. S. Whisnant; E. Wolin; A. Yegneswaran; J. Yun; B. Zhang; J. Zhao; Z. Zhou

First measurement of the double spin asymmetry in e→ p→ → e′ π⁺ n in the resonance region

R. de Vita, M. Anghinolfi, V. D. Burkert, G. E. Dodge, R. Minehart, M. Taiuti, H. Weller, G. Adams, M. J. Amaryan, E. Anciant, D. S. Armstrong, B. Asavapibhop, G. Asryan, G. Audit, T. Auger, H. Avakian, H. Bagdasaryan, J. P. Ball, S. Barrow, M. BattaglieriK. Beard, M. Bektasoglu, N. Bianchi, A. S. Biselli, S. Boiarinov, B. E. Bonner, P. Bosted, S. Bouchigny, D. Branford, W. K. Brooks, S. Bueltmann, J. R. Calarco, G. P. Capitani, D. S. Carman, B. Carnahan, A. Cazes, L. Ciciani, P. L. Cole, A. Coleman, J. Connelly, D. Cords, P. Corvisiero, D. Crabb, H. Crannell, J. P. Cummings, E. de Sanctis, P. V. Degtyarenko, R. Demirchyan, H. Denizli, L. Dennis, K. V. Dharmawardane, K. S. Dhuga, C. Djalali, D. Doughty, P. Dragovitsch, M. Dugger, S. Dytman, M. Eckhause, H. Egiyan, K. S. Egiyan, L. Elouadrhiri, A. Empl, L. Farhi, R. Fatemi, R. J. Feuerbach, J. Ficenec, T. A. Forest, V. Frolov, H. Funsten, S. J. Gaff, M. Gai, M. Garçon, G. Gavalian, S. Gilad, G. P. Gilfoyle, K. L. Giovanetti, P. Girard, E. Golovatch, K. Griffioen, M. Guidal, M. Guillo, V. Gyurjyan, C. Hadjidakis, D. Hancock, J. Hardie, D. Heddle, P. Heimberg, F. W. Hersman, K. Hicks, R. S. Hicks, M. Holtrop, J. Hu, C. E. Hyde-Wright, B. S. Ishkanov, M. M. Ito, D. Jenkins, K. Joo, J. H. Kelley, J. D. Kellie, M. Khandaker, K. Y. Kim, K. Kim, W. Kim, A. Klein, F. J. Klein, M. Klusman, M. Kossov, L. H. Kramer, Y. Kuang, S. E. Kuhn, J. Lachniet, J. M. Laget, D. Lawrence, J. Li, K. Livingston, A. Longhi, K. Loukachine, M. Lucas, W. Major, J. J. Manak, C. Marchand, S. McAleer, J. McCarthy, J. W.C. McNabb, B. A. Mecking, M. D. Mestayer, C. A. Meyer, K. Mikhailov, M. Mirazita, R. Miskimen, V. Mokeev, V. Muccifora, J. Mueller, G. S. Mutchler, J. Napolitano, S. O. Nelson, G. Niculescu, I. Niculescu, B. B. Niczyporuk, R. A. Niyazov, A. K. Opper, G. V. O'Rielly, M. Osipenko, K. Park, E. Pasyuk, G. Peterson, S. A. Philips, N. Pivnyuk, D. Pocanic, O. Pogorelko, E. Polli, S. Pozdniakov, B. M. Preedom, J. W. Price, Y. Prok, D. Protopopescu, L. M. Qin, B. A. Raue, A. R. Reolon, G. Riccardi, G. Ricco, M. Ripani, B. G. Ritchie, S. Rock, F. Ronchetti, P. Rossi, D. Rowntree, P. D. Rubin, F. Sabatié, K. Sabourov, C. Salgado, V. Sapunenko, M. Sargsyan, R. A. Schumacher, V. S. Serov, A. Shafi, Y. G. Sharabian, J. Shaw, A. V. Skabelin, E. S. Smith, T. Smith, L. C. Smith, D. I. Sober, L. Sorrell, M. Spraker, A. Stavinsky, S. Stepanyan, P. Stoler, I. I. Strakovsky, S. Taylor, D. J. Tedeschi, R. Thompson, L. Todor, M. Ungaro, M. F. Vineyard, A. V. Vlassov, K. Wang, L. B. Weinstein, A. Weisberg, D. P. Weygand, C. S. Whisnant, E. Wolin, A. Yegneswaran, J. Yun, B. Zhang, J. Zhao, Z. Zhou

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

The double spin asymmetry for the →e→p → e;π⁺ n channel was measured for the first time. A comparison with phenomenological models showed the high sensitivity of this observable to resonance contributions. The sign and magnitude of the measured assymmetry indicate the dominance of the helicity-1/2 contribution in the reaction, in contrast with the helicity-3/2 dominance observed at the photon point.

Original language	English
Article number	082001
Pages (from-to)	082001/1-082001/6
Journal	Physical Review Letters
Volume	88
Issue number	8
State	Published - Feb 25 2002

ASJC Scopus subject areas

General Physics and Astronomy

Cite this

de Vita, R., Anghinolfi, M., Burkert, V. D., Dodge, G. E., Minehart, R., Taiuti, M., Weller, H., Adams, G., Amaryan, M. J., Anciant, E., Armstrong, D. S., Asavapibhop, B., Asryan, G., Audit, G., Auger, T., Avakian, H., Bagdasaryan, H., Ball, J. P., Barrow, S., ... Zhou, Z. (2002). First measurement of the double spin asymmetry in e→ p→ → e′ π⁺ n in the resonance region. Physical Review Letters, 88(8), 082001/1-082001/6. Article 082001.

@article{53cb4784a5ee46d0a8df16e5c16abd1b,

title = "First measurement of the double spin asymmetry in e→ p→ → e′ π+ n in the resonance region",

abstract = "The double spin asymmetry for the →e→p → e;π+ n channel was measured for the first time. A comparison with phenomenological models showed the high sensitivity of this observable to resonance contributions. The sign and magnitude of the measured assymmetry indicate the dominance of the helicity-1/2 contribution in the reaction, in contrast with the helicity-3/2 dominance observed at the photon point.",

author = "{de Vita}, R. and M. Anghinolfi and Burkert, {V. D.} and Dodge, {G. E.} and R. Minehart and M. Taiuti and H. Weller and G. Adams and Amaryan, {M. J.} and E. Anciant and Armstrong, {D. S.} and B. Asavapibhop and G. Asryan and G. Audit and T. Auger and H. Avakian and H. Bagdasaryan and Ball, {J. P.} and S. Barrow and M. Battaglieri and K. Beard and M. Bektasoglu and N. Bianchi and Biselli, {A. S.} and S. Boiarinov and Bonner, {B. E.} and P. Bosted and S. Bouchigny and D. Branford and Brooks, {W. K.} and S. Bueltmann and Calarco, {J. R.} and Capitani, {G. P.} and Carman, {D. S.} and B. Carnahan and A. Cazes and L. Ciciani and Cole, {P. L.} and A. Coleman and J. Connelly and D. Cords and P. Corvisiero and D. Crabb and H. Crannell and Cummings, {J. P.} and {de Sanctis}, E. and Degtyarenko, {P. V.} and R. Demirchyan and H. Denizli and L. Dennis and Dharmawardane, {K. V.} and Dhuga, {K. S.} and C. Djalali and D. Doughty and P. Dragovitsch and M. Dugger and S. Dytman and M. Eckhause and H. Egiyan and Egiyan, {K. S.} and L. Elouadrhiri and A. Empl and L. Farhi and R. Fatemi and Feuerbach, {R. J.} and J. Ficenec and Forest, {T. A.} and V. Frolov and H. Funsten and Gaff, {S. J.} and M. Gai and M. Gar{\c c}on and G. Gavalian and S. Gilad and Gilfoyle, {G. P.} and Giovanetti, {K. L.} and P. Girard and E. Golovatch and K. Griffioen and M. Guidal and M. Guillo and V. Gyurjyan and C. Hadjidakis and D. Hancock and J. Hardie and D. Heddle and P. Heimberg and Hersman, {F. W.} and K. Hicks and Hicks, {R. S.} and M. Holtrop and J. Hu and Hyde-Wright, {C. E.} and Ishkanov, {B. S.} and Ito, {M. M.} and D. Jenkins and K. Joo and Kelley, {J. H.} and Kellie, {J. D.} and M. Khandaker and Kim, {K. Y.} and K. Kim and W. Kim and A. Klein and Klein, {F. J.} and M. Klusman and M. Kossov and Kramer, {L. H.} and Y. Kuang and Kuhn, {S. E.} and J. Lachniet and Laget, {J. M.} and D. Lawrence and J. Li and K. Livingston and A. Longhi and K. Loukachine and M. Lucas and W. Major and Manak, {J. J.} and C. Marchand and S. McAleer and J. McCarthy and McNabb, {J. W.C.} and Mecking, {B. A.} and Mestayer, {M. D.} and Meyer, {C. A.} and K. Mikhailov and M. Mirazita and R. Miskimen and V. Mokeev and V. Muccifora and J. Mueller and Mutchler, {G. S.} and J. Napolitano and Nelson, {S. O.} and G. Niculescu and I. Niculescu and Niczyporuk, {B. B.} and Niyazov, {R. A.} and Opper, {A. K.} and O'Rielly, {G. V.} and M. Osipenko and K. Park and E. Pasyuk and G. Peterson and Philips, {S. A.} and N. Pivnyuk and D. Pocanic and O. Pogorelko and E. Polli and S. Pozdniakov and Preedom, {B. M.} and Price, {J. W.} and Y. Prok and D. Protopopescu and Qin, {L. M.} and Raue, {B. A.} and Reolon, {A. R.} and G. Riccardi and G. Ricco and M. Ripani and Ritchie, {B. G.} and S. Rock and F. Ronchetti and P. Rossi and D. Rowntree and Rubin, {P. D.} and F. Sabati{\'e} and K. Sabourov and C. Salgado and V. Sapunenko and M. Sargsyan and Schumacher, {R. A.} and Serov, {V. S.} and A. Shafi and Sharabian, {Y. G.} and J. Shaw and Skabelin, {A. V.} and Smith, {E. S.} and T. Smith and Smith, {L. C.} and Sober, {D. I.} and L. Sorrell and M. Spraker and A. Stavinsky and S. Stepanyan and P. Stoler and Strakovsky, {I. I.} and S. Taylor and Tedeschi, {D. J.} and R. Thompson and L. Todor and M. Ungaro and Vineyard, {M. F.} and Vlassov, {A. V.} and K. Wang and Weinstein, {L. B.} and A. Weisberg and Weygand, {D. P.} and Whisnant, {C. S.} and E. Wolin and A. Yegneswaran and J. Yun and B. Zhang and J. Zhao and Z. Zhou",

year = "2002",

month = feb,

day = "25",

language = "English",

volume = "88",

pages = "082001/1--082001/6",

number = "8",

}

de Vita, R, Anghinolfi, M, Burkert, VD, Dodge, GE, Minehart, R, Taiuti, M, Weller, H, Adams, G, Amaryan, MJ, Anciant, E, Armstrong, DS, Asavapibhop, B, Asryan, G, Audit, G, Auger, T, Avakian, H, Bagdasaryan, H, Ball, JP, Barrow, S, Battaglieri, M, Beard, K, Bektasoglu, M, Bianchi, N, Biselli, AS, Boiarinov, S, Bonner, BE, Bosted, P, Bouchigny, S, Branford, D, Brooks, WK, Bueltmann, S, Calarco, JR, Capitani, GP, Carman, DS, Carnahan, B, Cazes, A, Ciciani, L, Cole, PL, Coleman, A, Connelly, J, Cords, D, Corvisiero, P, Crabb, D, Crannell, H, Cummings, JP, de Sanctis, E, Degtyarenko, PV, Demirchyan, R, Denizli, H, Dennis, L, Dharmawardane, KV, Dhuga, KS, Djalali, C, Doughty, D, Dragovitsch, P, Dugger, M, Dytman, S, Eckhause, M, Egiyan, H, Egiyan, KS, Elouadrhiri, L, Empl, A, Farhi, L, Fatemi, R, Feuerbach, RJ, Ficenec, J, Forest, TA, Frolov, V, Funsten, H, Gaff, SJ, Gai, M, Garçon, M, Gavalian, G, Gilad, S, Gilfoyle, GP, Giovanetti, KL, Girard, P, Golovatch, E, Griffioen, K, Guidal, M, Guillo, M, Gyurjyan, V, Hadjidakis, C, Hancock, D, Hardie, J, Heddle, D, Heimberg, P, Hersman, FW, Hicks, K, Hicks, RS, Holtrop, M, Hu, J, Hyde-Wright, CE, Ishkanov, BS, Ito, MM, Jenkins, D, Joo, K, Kelley, JH, Kellie, JD, Khandaker, M, Kim, KY, Kim, K, Kim, W, Klein, A, Klein, FJ, Klusman, M, Kossov, M, Kramer, LH, Kuang, Y, Kuhn, SE, Lachniet, J, Laget, JM, Lawrence, D, Li, J, Livingston, K, Longhi, A, Loukachine, K, Lucas, M, Major, W, Manak, JJ, Marchand, C, McAleer, S, McCarthy, J, McNabb, JWC, Mecking, BA, Mestayer, MD, Meyer, CA, Mikhailov, K, Mirazita, M, Miskimen, R, Mokeev, V, Muccifora, V, Mueller, J, Mutchler, GS, Napolitano, J, Nelson, SO, Niculescu, G, Niculescu, I, Niczyporuk, BB, Niyazov, RA, Opper, AK, O'Rielly, GV, Osipenko, M, Park, K, Pasyuk, E, Peterson, G, Philips, SA, Pivnyuk, N, Pocanic, D, Pogorelko, O, Polli, E, Pozdniakov, S, Preedom, BM, Price, JW, Prok, Y, Protopopescu, D, Qin, LM, Raue, BA, Reolon, AR, Riccardi, G, Ricco, G, Ripani, M, Ritchie, BG, Rock, S, Ronchetti, F, Rossi, P, Rowntree, D, Rubin, PD, Sabatié, F, Sabourov, K, Salgado, C, Sapunenko, V, Sargsyan, M, Schumacher, RA, Serov, VS, Shafi, A, Sharabian, YG, Shaw, J, Skabelin, AV, Smith, ES, Smith, T, Smith, LC, Sober, DI, Sorrell, L, Spraker, M, Stavinsky, A, Stepanyan, S, Stoler, P, Strakovsky, II, Taylor, S, Tedeschi, DJ, Thompson, R, Todor, L, Ungaro, M, Vineyard, MF, Vlassov, AV, Wang, K, Weinstein, LB, Weisberg, A, Weygand, DP, Whisnant, CS, Wolin, E, Yegneswaran, A, Yun, J, Zhang, B, Zhao, J & Zhou, Z 2002, 'First measurement of the double spin asymmetry in e→ p→ → e′ π⁺ n in the resonance region', Physical Review Letters, vol. 88, no. 8, 082001, pp. 082001/1-082001/6.

TY - JOUR

T1 - First measurement of the double spin asymmetry in e→ p→ → e′ π+ n in the resonance region

AU - de Vita, R.

AU - Anghinolfi, M.

AU - Burkert, V. D.

AU - Dodge, G. E.

AU - Minehart, R.

AU - Taiuti, M.

AU - Weller, H.

AU - Adams, G.

AU - Amaryan, M. J.

AU - Anciant, E.

AU - Armstrong, D. S.

AU - Asavapibhop, B.

AU - Asryan, G.

AU - Audit, G.

AU - Auger, T.

AU - Avakian, H.

AU - Bagdasaryan, H.

AU - Ball, J. P.

AU - Barrow, S.

AU - Battaglieri, M.

AU - Beard, K.

AU - Bektasoglu, M.

AU - Bianchi, N.

AU - Biselli, A. S.

AU - Boiarinov, S.

AU - Bonner, B. E.

AU - Bosted, P.

AU - Bouchigny, S.

AU - Branford, D.

AU - Brooks, W. K.

AU - Bueltmann, S.

AU - Calarco, J. R.

AU - Capitani, G. P.

AU - Carman, D. S.

AU - Carnahan, B.

AU - Cazes, A.

AU - Ciciani, L.

AU - Cole, P. L.

AU - Coleman, A.

AU - Connelly, J.

AU - Cords, D.

AU - Corvisiero, P.

AU - Crabb, D.

AU - Crannell, H.

AU - Cummings, J. P.

AU - de Sanctis, E.

AU - Degtyarenko, P. V.

AU - Demirchyan, R.

AU - Denizli, H.

AU - Dennis, L.

AU - Dharmawardane, K. V.

AU - Dhuga, K. S.

AU - Djalali, C.

AU - Doughty, D.

AU - Dragovitsch, P.

AU - Dugger, M.

AU - Dytman, S.

AU - Eckhause, M.

AU - Egiyan, H.

AU - Egiyan, K. S.

AU - Elouadrhiri, L.

AU - Empl, A.

AU - Farhi, L.

AU - Fatemi, R.

AU - Feuerbach, R. J.

AU - Ficenec, J.

AU - Forest, T. A.

AU - Frolov, V.

AU - Funsten, H.

AU - Gaff, S. J.

AU - Gai, M.

AU - Garçon, M.

AU - Gavalian, G.

AU - Gilad, S.

AU - Gilfoyle, G. P.

AU - Giovanetti, K. L.

AU - Girard, P.

AU - Golovatch, E.

AU - Griffioen, K.

AU - Guidal, M.

AU - Guillo, M.

AU - Gyurjyan, V.

AU - Hadjidakis, C.

AU - Hancock, D.

AU - Hardie, J.

AU - Heddle, D.

AU - Heimberg, P.

AU - Hersman, F. W.

AU - Hicks, K.

AU - Hicks, R. S.

AU - Holtrop, M.

AU - Hu, J.

AU - Hyde-Wright, C. E.

AU - Ishkanov, B. S.

AU - Ito, M. M.

AU - Jenkins, D.

AU - Joo, K.

AU - Kelley, J. H.

AU - Kellie, J. D.

AU - Khandaker, M.

AU - Kim, K. Y.

AU - Kim, K.

AU - Kim, W.

AU - Klein, A.

AU - Klein, F. J.

AU - Klusman, M.

AU - Kossov, M.

AU - Kramer, L. H.

AU - Kuang, Y.

AU - Kuhn, S. E.

AU - Lachniet, J.

AU - Laget, J. M.

AU - Lawrence, D.

AU - Li, J.

AU - Livingston, K.

AU - Longhi, A.

AU - Loukachine, K.

AU - Lucas, M.

AU - Major, W.

AU - Manak, J. J.

AU - Marchand, C.

AU - McAleer, S.

AU - McCarthy, J.

AU - McNabb, J. W.C.

AU - Mecking, B. A.

AU - Mestayer, M. D.

AU - Meyer, C. A.

AU - Mikhailov, K.

AU - Mirazita, M.

AU - Miskimen, R.

AU - Mokeev, V.

AU - Muccifora, V.

AU - Mueller, J.

AU - Mutchler, G. S.

AU - Napolitano, J.

AU - Nelson, S. O.

AU - Niculescu, G.

AU - Niculescu, I.

AU - Niczyporuk, B. B.

AU - Niyazov, R. A.

AU - Opper, A. K.

AU - O'Rielly, G. V.

AU - Osipenko, M.

AU - Park, K.

AU - Pasyuk, E.

AU - Peterson, G.

AU - Philips, S. A.

AU - Pivnyuk, N.

AU - Pocanic, D.

AU - Pogorelko, O.

AU - Polli, E.

AU - Pozdniakov, S.

AU - Preedom, B. M.

AU - Price, J. W.

AU - Prok, Y.

AU - Protopopescu, D.

AU - Qin, L. M.

AU - Raue, B. A.

AU - Reolon, A. R.

AU - Riccardi, G.

AU - Ricco, G.

AU - Ripani, M.

AU - Ritchie, B. G.

AU - Rock, S.

AU - Ronchetti, F.

AU - Rossi, P.

AU - Rowntree, D.

AU - Rubin, P. D.

AU - Sabatié, F.

AU - Sabourov, K.

AU - Salgado, C.

AU - Sapunenko, V.

AU - Sargsyan, M.

AU - Schumacher, R. A.

AU - Serov, V. S.

AU - Shafi, A.

AU - Sharabian, Y. G.

AU - Shaw, J.

AU - Skabelin, A. V.

AU - Smith, E. S.

AU - Smith, T.

AU - Smith, L. C.

AU - Sober, D. I.

AU - Sorrell, L.

AU - Spraker, M.

AU - Stavinsky, A.

AU - Stepanyan, S.

AU - Stoler, P.

AU - Strakovsky, I. I.

AU - Taylor, S.

AU - Tedeschi, D. J.

AU - Thompson, R.

AU - Todor, L.

AU - Ungaro, M.

AU - Vineyard, M. F.

AU - Vlassov, A. V.

AU - Wang, K.

AU - Weinstein, L. B.

AU - Weisberg, A.

AU - Weygand, D. P.

AU - Whisnant, C. S.

AU - Wolin, E.

AU - Yegneswaran, A.

AU - Yun, J.

AU - Zhang, B.

AU - Zhao, J.

AU - Zhou, Z.

PY - 2002/2/25

Y1 - 2002/2/25

N2 - The double spin asymmetry for the →e→p → e;π+ n channel was measured for the first time. A comparison with phenomenological models showed the high sensitivity of this observable to resonance contributions. The sign and magnitude of the measured assymmetry indicate the dominance of the helicity-1/2 contribution in the reaction, in contrast with the helicity-3/2 dominance observed at the photon point.

AB - The double spin asymmetry for the →e→p → e;π+ n channel was measured for the first time. A comparison with phenomenological models showed the high sensitivity of this observable to resonance contributions. The sign and magnitude of the measured assymmetry indicate the dominance of the helicity-1/2 contribution in the reaction, in contrast with the helicity-3/2 dominance observed at the photon point.

UR - http://www.scopus.com/inward/record.url?scp=80051476534&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=80051476534&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:80051476534

SN - 0031-9007

VL - 88

SP - 082001/1-082001/6

JO - Physical Review Letters

JF - Physical Review Letters

IS - 8

M1 - 082001

ER -

First measurement of the double spin asymmetry in e→ p→ → e′ π⁺ n in the resonance region

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