Measurement of the polarized structure function σlT' for pion electroproduction in the Roper-resonance region

K. Joo; L. C. Smith; I. G. Aznauryan; V. D. Burkert; H. Egiyan; R. Minehart; G. Adams; P. Ambrozewicz; E. Anciant; M. Anghinolfi; B. Asavapibhop; G. Asryan; G. Audit; T. Auger; H. Avakian; H. Bagdasaryan; N. Baillie; J. P. Ball; N. A. Baltzell; S. Barrow; V. Batourine; M. Battaglieri; K. Beard; I. Bedlinskiy; M. Bektasoglu; M. Bellis; N. Benmouna; B. L. Berman; N. Bianchi; A. S. Biselli; B. E. Bonner; S. Bouchigny; S. Boiarinov; R. Bradford; D. Branford; W. J. Briscoe; W. K. Brooks; S. Bueltmann; C. Butuceanu; J. R. Calarco; S. L. Careccia; D. S. Carman; B. Carnahan; C. Cetina; S. Chen; P. L. Cole; A. Coleman; P. Coltharp; D. Cords; P. Corvisiero; D. Crabb; J. P. Cummings; E. de Sanctis; R. DeVita; P. V. Degtyarenko; L. Dennis; A. Deur; K. V. Dharmawardane; K. S. Dhuga; C. Djalali; G. E. Dodge; J. Donnelly; D. Doughty; P. Dragovitsch; Michael Dugger; S. Dytman; O. P. Dzyubak; K. S. Egiyan; L. Elouadrhiri; A. Empl; P. Eugenio; L. Farhi; R. Fatemi; G. Fedotov; G. Feldman; R. J. Feuerbach; T. A. Forest; V. Frolov; H. Funsten; S. J. Gaff; M. Garçon; G. Gavalian; G. P. Gilfoyle; K. L. Giovanetti; P. Girard; F. X. Girod; J. T. Goetz; R. W. Gothe; K. A. Griffioen; M. Guidal; M. Guillo; N. Guler; L. Guo; V. Gyurjyan; R. S. Hakobyan; J. Hardie; D. Heddle; F. W. Hersman; K. Hicks; I. Hleiqawi; M. Holtrop; J. Hu; C. E. Hyde-Wright; Y. Ilieva; D. G. Ireland; B. S. Ishkhanov; M. M. Ito; D. Jenkins; H. S. Jo; H. G. Juengst; J. H. Kelley; J. D. Kellie; M. Khandaker; K. Y. Kim; K. Kim; W. Kim; A. Klein; F. J. Klein; A. V. Klimenko; M. Klusman; M. Kossov; L. H. Kramer; V. Kubarovsky; J. Kuhn; S. E. Kuhn; J. Lachniet; J. M. Laget; J. Langheinrich; D. Lawrence; T. Lee; K. Livingston; K. Lukashin; J. J. Manak; C. Marchand; L. C. Maximon; S. McAleer; B. McKinnon; J. W C McNabb; B. A. Mecking; M. D. Mestayer; C. A. Meyer; K. Mikhailov; M. Mirazita; R. Miskimen; V. Mokeev; S. A. Morrow; V. Muccifora; J. Mueller; G. S. Mutchler; P. Nadel-Turonski; J. Napolitano; R. Nasseripour; S. O. Nelson; S. Niccolai; G. Niculescu; I. Niculescu; B. B. Niczyporuk; R. A. Niyazov; M. Nozar; G. V. O'Rielly; M. Osipenko; A. I. Ostrovidov; K. Park; E. Pasyuk; G. Peterson; S. A. Philips; J. Pierce; 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; G. Riccardi; G. Ricco; M. Ripani; Barry Ritchie; F. Ronchetti; G. Rosner; P. Rossi; D. Rowntree; P. D. Rubin; F. Sabatié; K. Sabourov; C. Salgado; J. P. Santoro; V. Sapunenko; R. A. Schumacher; V. S. Serov; A. Shafi; Y. G. Sharabian; J. Shaw; S. Simionatto; A. V. Skabelin; E. S. Smith; D. I. Sober; M. Spraker; A. Stavinsky; S. S. Stepanyan; S. Stepanyan; B. E. Stokes; P. Stoler; I. I. Strakovsky; S. Strauch; M. Taiuti; S. Taylor; D. J. Tedeschi; U. Thoma; R. Thompson; A. Tkabladze; C. Tur; M. Ungaro; M. F. Vineyard; A. V. Vlassov; K. Wang; L. B. Weinstein; H. Weller; D. P. Weygand; M. Williams; E. Wolin; M. H. Wood; A. Yegneswaran; J. Yun; L. Zana; J. Zhang

doi:10.1103/PhysRevC.72.058202

Measurement of the polarized structure function σlT' for pion electroproduction in the Roper-resonance region

K. Joo, L. C. Smith, I. G. Aznauryan, V. D. Burkert, H. Egiyan, R. Minehart, G. Adams, P. Ambrozewicz, E. Anciant, M. Anghinolfi, B. Asavapibhop, G. Asryan, G. Audit, T. Auger, H. Avakian, H. Bagdasaryan, N. Baillie, J. P. Ball, N. A. Baltzell, S. BarrowV. Batourine, M. Battaglieri, K. Beard, I. Bedlinskiy, M. Bektasoglu, M. Bellis, N. Benmouna, B. L. Berman, N. Bianchi, A. S. Biselli, B. E. Bonner, S. Bouchigny, S. Boiarinov, R. Bradford, D. Branford, W. J. Briscoe, W. K. Brooks, S. Bueltmann, C. Butuceanu, J. R. Calarco, S. L. Careccia, D. S. Carman, B. Carnahan, C. Cetina, S. Chen, P. L. Cole, A. Coleman, P. Coltharp, D. Cords, P. Corvisiero, D. Crabb, J. P. Cummings, E. de Sanctis, R. DeVita, P. V. Degtyarenko, L. Dennis, A. Deur, K. V. Dharmawardane, K. S. Dhuga, C. Djalali, G. E. Dodge, J. Donnelly, D. Doughty, P. Dragovitsch, Michael Dugger, S. Dytman, O. P. Dzyubak, K. S. Egiyan, L. Elouadrhiri, A. Empl, P. Eugenio, L. Farhi, R. Fatemi, G. Fedotov, G. Feldman, R. J. Feuerbach, T. A. Forest, V. Frolov, H. Funsten, S. J. Gaff, M. Garçon, G. Gavalian, G. P. Gilfoyle, K. L. Giovanetti, P. Girard, F. X. Girod, J. T. Goetz, R. W. Gothe, K. A. Griffioen, M. Guidal, M. Guillo, N. Guler, L. Guo, V. Gyurjyan, R. S. Hakobyan, J. Hardie, D. Heddle, F. W. Hersman, K. Hicks, I. Hleiqawi, M. Holtrop, J. Hu, C. E. Hyde-Wright, Y. Ilieva, D. G. Ireland, B. S. Ishkhanov, M. M. Ito, D. Jenkins, H. S. Jo, H. G. Juengst, J. H. Kelley, J. D. Kellie, M. Khandaker, K. Y. Kim, K. Kim, W. Kim, A. Klein, F. J. Klein, A. V. Klimenko, M. Klusman, M. Kossov, L. H. Kramer, V. Kubarovsky, J. Kuhn, S. E. Kuhn, J. Lachniet, J. M. Laget, J. Langheinrich, D. Lawrence, T. Lee, K. Livingston, K. Lukashin, J. J. Manak, C. Marchand, L. C. Maximon, S. McAleer, B. McKinnon, J. W C McNabb, B. A. Mecking, M. D. Mestayer, C. A. Meyer, K. Mikhailov, M. Mirazita, R. Miskimen, V. Mokeev, S. A. Morrow, V. Muccifora, J. Mueller, G. S. Mutchler, P. Nadel-Turonski, J. Napolitano, R. Nasseripour, S. O. Nelson, S. Niccolai, G. Niculescu, I. Niculescu, B. B. Niczyporuk, R. A. Niyazov, M. Nozar, G. V. O'Rielly, M. Osipenko, A. I. Ostrovidov, K. Park, E. Pasyuk, G. Peterson, S. A. Philips, J. Pierce, 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, G. Riccardi, G. Ricco, M. Ripani, Barry Ritchie, F. Ronchetti, G. Rosner, P. Rossi, D. Rowntree, P. D. Rubin, F. Sabatié, K. Sabourov, C. Salgado, J. P. Santoro, V. Sapunenko, R. A. Schumacher, V. S. Serov, A. Shafi, Y. G. Sharabian, J. Shaw, S. Simionatto, A. V. Skabelin, E. S. Smith, D. I. Sober, M. Spraker, A. Stavinsky, S. S. Stepanyan, S. Stepanyan, B. E. Stokes, P. Stoler, I. I. Strakovsky, S. Strauch, M. Taiuti, S. Taylor, D. J. Tedeschi, U. Thoma, R. Thompson, A. Tkabladze, C. Tur, M. Ungaro, M. F. Vineyard, A. V. Vlassov, K. Wang, L. B. Weinstein, H. Weller, D. P. Weygand, M. Williams, E. Wolin, M. H. Wood, A. Yegneswaran, J. Yun, L. Zana, J. Zhang

Physics

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

26 Scopus citations

Abstract

The polarized longitudinal-transverse structure function σLT' measures the interference between real and imaginary amplitudes in pion electroproduction and can be used to probe the coupling between resonant and nonresonant processes. We report new measurements of σLT' in the N(1440)12+ (Roper) resonance region at Q2=0.40 and 0.65GeV2 for both the π0p and π+n channels. The experiment was performed at Jefferson Lab with the CEBAF Large Acceptance Spectrometer (CLAS) using longitudinally polarized electrons at a beam energy of 1.515 GeV. Complete angular distributions were obtained and are compared to recent phenomenological models. The σLT'(π+n) channel shows a large sensitivity to the Roper-resonance multipoles M1- and S1- and provides new constraints on models of resonance formation.

Original language	English (US)
Article number	058202
Journal	Physical Review C - Nuclear Physics
Volume	72
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevC.72.058202
State	Published - Nov 2005

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1103/PhysRevC.72.058202

Cite this

Joo, K., Smith, L. C., Aznauryan, I. G., Burkert, V. D., Egiyan, H., Minehart, R., Adams, G., Ambrozewicz, P., Anciant, E., Anghinolfi, M., Asavapibhop, B., Asryan, G., Audit, G., Auger, T., Avakian, H., Bagdasaryan, H., Baillie, N., Ball, J. P., Baltzell, N. A., ... Zhang, J. (2005). Measurement of the polarized structure function σlT' for pion electroproduction in the Roper-resonance region. Physical Review C - Nuclear Physics, 72(5), Article 058202. https://doi.org/10.1103/PhysRevC.72.058202

Joo, K, Smith, LC, Aznauryan, IG, Burkert, VD, Egiyan, H, Minehart, R, Adams, G, Ambrozewicz, P, Anciant, E, Anghinolfi, M, Asavapibhop, B, Asryan, G, Audit, G, Auger, T, Avakian, H, Bagdasaryan, H, Baillie, N, Ball, JP, Baltzell, NA, Barrow, S, Batourine, V, Battaglieri, M, Beard, K, Bedlinskiy, I, Bektasoglu, M, Bellis, M, Benmouna, N, Berman, BL, Bianchi, N, Biselli, AS, Bonner, BE, Bouchigny, S, Boiarinov, S, Bradford, R, Branford, D, Briscoe, WJ, Brooks, WK, Bueltmann, S, Butuceanu, C, Calarco, JR, Careccia, SL, Carman, DS, Carnahan, B, Cetina, C, Chen, S, Cole, PL, Coleman, A, Coltharp, P, Cords, D, Corvisiero, P, Crabb, D, Cummings, JP, de Sanctis, E, DeVita, R, Degtyarenko, PV, Dennis, L, Deur, A, Dharmawardane, KV, Dhuga, KS, Djalali, C, Dodge, GE, Donnelly, J, Doughty, D, Dragovitsch, P, Dugger, M, Dytman, S, Dzyubak, OP, Egiyan, KS, Elouadrhiri, L, Empl, A, Eugenio, P, Farhi, L, Fatemi, R, Fedotov, G, Feldman, G, Feuerbach, RJ, Forest, TA, Frolov, V, Funsten, H, Gaff, SJ, Garçon, M, Gavalian, G, Gilfoyle, GP, Giovanetti, KL, Girard, P, Girod, FX, Goetz, JT, Gothe, RW, Griffioen, KA, Guidal, M, Guillo, M, Guler, N, Guo, L, Gyurjyan, V, Hakobyan, RS, Hardie, J, Heddle, D, Hersman, FW, Hicks, K, Hleiqawi, I, Holtrop, M, Hu, J, Hyde-Wright, CE, Ilieva, Y, Ireland, DG, Ishkhanov, BS, Ito, MM, Jenkins, D, Jo, HS, Juengst, HG, Kelley, JH, Kellie, JD, Khandaker, M, Kim, KY, Kim, K, Kim, W, Klein, A, Klein, FJ, Klimenko, AV, Klusman, M, Kossov, M, Kramer, LH, Kubarovsky, V, Kuhn, J, Kuhn, SE, Lachniet, J, Laget, JM, Langheinrich, J, Lawrence, D, Lee, T, Livingston, K, Lukashin, K, Manak, JJ, Marchand, C, Maximon, LC, McAleer, S, McKinnon, B, McNabb, JWC, Mecking, BA, Mestayer, MD, Meyer, CA, Mikhailov, K, Mirazita, M, Miskimen, R, Mokeev, V, Morrow, SA, Muccifora, V, Mueller, J, Mutchler, GS, Nadel-Turonski, P, Napolitano, J, Nasseripour, R, Nelson, SO, Niccolai, S, Niculescu, G, Niculescu, I, Niczyporuk, BB, Niyazov, RA, Nozar, M, O'Rielly, GV, Osipenko, M, Ostrovidov, AI, Park, K, Pasyuk, E, Peterson, G, Philips, SA, Pierce, J, Pivnyuk, N, Pocanic, D, Pogorelko, O, Polli, E, Pozdniakov, S, Preedom, BM, Price, JW, Prok, Y, Protopopescu, D, Qin, LM, Raue, BA, Riccardi, G, Ricco, G, Ripani, M, Ritchie, B, Ronchetti, F, Rosner, G, Rossi, P, Rowntree, D, Rubin, PD, Sabatié, F, Sabourov, K, Salgado, C, Santoro, JP, Sapunenko, V, Schumacher, RA, Serov, VS, Shafi, A, Sharabian, YG, Shaw, J, Simionatto, S, Skabelin, AV, Smith, ES, Sober, DI, Spraker, M, Stavinsky, A, Stepanyan, SS, Stepanyan, S, Stokes, BE, Stoler, P, Strakovsky, II, Strauch, S, Taiuti, M, Taylor, S, Tedeschi, DJ, Thoma, U, Thompson, R, Tkabladze, A, Tur, C, Ungaro, M, Vineyard, MF, Vlassov, AV, Wang, K, Weinstein, LB, Weller, H, Weygand, DP, Williams, M, Wolin, E, Wood, MH, Yegneswaran, A, Yun, J, Zana, L & Zhang, J 2005, 'Measurement of the polarized structure function σlT' for pion electroproduction in the Roper-resonance region', Physical Review C - Nuclear Physics, vol. 72, no. 5, 058202. https://doi.org/10.1103/PhysRevC.72.058202

@article{526dc8e6efdd4014825eeed59bf82420,

title = "Measurement of the polarized structure function σlT' for pion electroproduction in the Roper-resonance region",

abstract = "The polarized longitudinal-transverse structure function σLT' measures the interference between real and imaginary amplitudes in pion electroproduction and can be used to probe the coupling between resonant and nonresonant processes. We report new measurements of σLT' in the N(1440)12+ (Roper) resonance region at Q2=0.40 and 0.65GeV2 for both the π0p and π+n channels. The experiment was performed at Jefferson Lab with the CEBAF Large Acceptance Spectrometer (CLAS) using longitudinally polarized electrons at a beam energy of 1.515 GeV. Complete angular distributions were obtained and are compared to recent phenomenological models. The σLT'(π+n) channel shows a large sensitivity to the Roper-resonance multipoles M1- and S1- and provides new constraints on models of resonance formation.",

author = "K. Joo and Smith, {L. C.} and Aznauryan, {I. G.} and Burkert, {V. D.} and H. Egiyan and R. Minehart and G. Adams and P. Ambrozewicz and E. Anciant and M. Anghinolfi and B. Asavapibhop and G. Asryan and G. Audit and T. Auger and H. Avakian and H. Bagdasaryan and N. Baillie and Ball, {J. P.} and Baltzell, {N. A.} and S. Barrow and V. Batourine and M. Battaglieri and K. Beard and I. Bedlinskiy and M. Bektasoglu and M. Bellis and N. Benmouna and Berman, {B. L.} and N. Bianchi and Biselli, {A. S.} and Bonner, {B. E.} and S. Bouchigny and S. Boiarinov and R. Bradford and D. Branford and Briscoe, {W. J.} and Brooks, {W. K.} and S. Bueltmann and C. Butuceanu and Calarco, {J. R.} and Careccia, {S. L.} and Carman, {D. S.} and B. Carnahan and C. Cetina and S. Chen and Cole, {P. L.} and A. Coleman and P. Coltharp and D. Cords and P. Corvisiero and D. Crabb and Cummings, {J. P.} and {de Sanctis}, E. and R. DeVita and Degtyarenko, {P. V.} and L. Dennis and A. Deur and Dharmawardane, {K. V.} and Dhuga, {K. S.} and C. Djalali and Dodge, {G. E.} and J. Donnelly and D. Doughty and P. Dragovitsch and Michael Dugger and S. Dytman and Dzyubak, {O. P.} and Egiyan, {K. S.} and L. Elouadrhiri and A. Empl and P. Eugenio and L. Farhi and R. Fatemi and G. Fedotov and G. Feldman and Feuerbach, {R. J.} and Forest, {T. A.} and V. Frolov and H. Funsten and Gaff, {S. J.} and M. Gar{\c c}on and G. Gavalian and Gilfoyle, {G. P.} and Giovanetti, {K. L.} and P. Girard and Girod, {F. X.} and Goetz, {J. T.} and Gothe, {R. W.} and Griffioen, {K. A.} and M. Guidal and M. Guillo and N. Guler and L. Guo and V. Gyurjyan and Hakobyan, {R. S.} and J. Hardie and D. Heddle and Hersman, {F. W.} and K. Hicks and I. Hleiqawi and M. Holtrop and J. Hu and Hyde-Wright, {C. E.} and Y. Ilieva and Ireland, {D. G.} and Ishkhanov, {B. S.} and Ito, {M. M.} and D. Jenkins and Jo, {H. S.} and Juengst, {H. G.} 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 Klimenko, {A. V.} and M. Klusman and M. Kossov and Kramer, {L. H.} and V. Kubarovsky and J. Kuhn and Kuhn, {S. E.} and J. Lachniet and Laget, {J. M.} and J. Langheinrich and D. Lawrence and T. Lee and K. Livingston and K. Lukashin and Manak, {J. J.} and C. Marchand and Maximon, {L. C.} and S. McAleer and B. McKinnon 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 Morrow, {S. A.} and V. Muccifora and J. Mueller and Mutchler, {G. S.} and P. Nadel-Turonski and J. Napolitano and R. Nasseripour and Nelson, {S. O.} and S. Niccolai and G. Niculescu and I. Niculescu and Niczyporuk, {B. B.} and Niyazov, {R. A.} and M. Nozar and O'Rielly, {G. V.} and M. Osipenko and Ostrovidov, {A. I.} and K. Park and E. Pasyuk and G. Peterson and Philips, {S. A.} and J. Pierce 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 G. Riccardi and G. Ricco and M. Ripani and Barry Ritchie and F. Ronchetti and G. Rosner and P. Rossi and D. Rowntree and Rubin, {P. D.} and F. Sabati{\'e} and K. Sabourov and C. Salgado and Santoro, {J. P.} and V. Sapunenko and Schumacher, {R. A.} and Serov, {V. S.} and A. Shafi and Sharabian, {Y. G.} and J. Shaw and S. Simionatto and Skabelin, {A. V.} and Smith, {E. S.} and Sober, {D. I.} and M. Spraker and A. Stavinsky and Stepanyan, {S. S.} and S. Stepanyan and Stokes, {B. E.} and P. Stoler and Strakovsky, {I. I.} and S. Strauch and M. Taiuti and S. Taylor and Tedeschi, {D. J.} and U. Thoma and R. Thompson and A. Tkabladze and C. Tur and M. Ungaro and Vineyard, {M. F.} and Vlassov, {A. V.} and K. Wang and Weinstein, {L. B.} and H. Weller and Weygand, {D. P.} and M. Williams and E. Wolin and Wood, {M. H.} and A. Yegneswaran and J. Yun and L. Zana and J. Zhang",

year = "2005",

month = nov,

doi = "10.1103/PhysRevC.72.058202",

language = "English (US)",

volume = "72",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

publisher = "American Physical Society",

number = "5",

}

TY - JOUR

T1 - Measurement of the polarized structure function σlT' for pion electroproduction in the Roper-resonance region

AU - Joo, K.

AU - Smith, L. C.

AU - Aznauryan, I. G.

AU - Burkert, V. D.

AU - Egiyan, H.

AU - Minehart, R.

AU - Adams, G.

AU - Ambrozewicz, P.

AU - Anciant, E.

AU - Anghinolfi, M.

AU - Asavapibhop, B.

AU - Asryan, G.

AU - Audit, G.

AU - Auger, T.

AU - Avakian, H.

AU - Bagdasaryan, H.

AU - Baillie, N.

AU - Ball, J. P.

AU - Baltzell, N. A.

AU - Barrow, S.

AU - Batourine, V.

AU - Battaglieri, M.

AU - Beard, K.

AU - Bedlinskiy, I.

AU - Bektasoglu, M.

AU - Bellis, M.

AU - Benmouna, N.

AU - Berman, B. L.

AU - Bianchi, N.

AU - Biselli, A. S.

AU - Bonner, B. E.

AU - Bouchigny, S.

AU - Boiarinov, S.

AU - Bradford, R.

AU - Branford, D.

AU - Briscoe, W. J.

AU - Brooks, W. K.

AU - Bueltmann, S.

AU - Butuceanu, C.

AU - Calarco, J. R.

AU - Careccia, S. L.

AU - Carman, D. S.

AU - Carnahan, B.

AU - Cetina, C.

AU - Chen, S.

AU - Cole, P. L.

AU - Coleman, A.

AU - Coltharp, P.

AU - Cords, D.

AU - Corvisiero, P.

AU - Crabb, D.

AU - Cummings, J. P.

AU - de Sanctis, E.

AU - DeVita, R.

AU - Degtyarenko, P. V.

AU - Dennis, L.

AU - Deur, A.

AU - Dharmawardane, K. V.

AU - Dhuga, K. S.

AU - Djalali, C.

AU - Dodge, G. E.

AU - Donnelly, J.

AU - Doughty, D.

AU - Dragovitsch, P.

AU - Dugger, Michael

AU - Dytman, S.

AU - Dzyubak, O. P.

AU - Egiyan, K. S.

AU - Elouadrhiri, L.

AU - Empl, A.

AU - Eugenio, P.

AU - Farhi, L.

AU - Fatemi, R.

AU - Fedotov, G.

AU - Feldman, G.

AU - Feuerbach, R. J.

AU - Forest, T. A.

AU - Frolov, V.

AU - Funsten, H.

AU - Gaff, S. J.

AU - Garçon, M.

AU - Gavalian, G.

AU - Gilfoyle, G. P.

AU - Giovanetti, K. L.

AU - Girard, P.

AU - Girod, F. X.

AU - Goetz, J. T.

AU - Gothe, R. W.

AU - Griffioen, K. A.

AU - Guidal, M.

AU - Guillo, M.

AU - Guler, N.

AU - Guo, L.

AU - Gyurjyan, V.

AU - Hakobyan, R. S.

AU - Hardie, J.

AU - Heddle, D.

AU - Hersman, F. W.

AU - Hicks, K.

AU - Hleiqawi, I.

AU - Holtrop, M.

AU - Hu, J.

AU - Hyde-Wright, C. E.

AU - Ilieva, Y.

AU - Ireland, D. G.

AU - Ishkhanov, B. S.

AU - Ito, M. M.

AU - Jenkins, D.

AU - Jo, H. S.

AU - Juengst, H. G.

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 - Klimenko, A. V.

AU - Klusman, M.

AU - Kossov, M.

AU - Kramer, L. H.

AU - Kubarovsky, V.

AU - Kuhn, J.

AU - Kuhn, S. E.

AU - Lachniet, J.

AU - Laget, J. M.

AU - Langheinrich, J.

AU - Lawrence, D.

AU - Lee, T.

AU - Livingston, K.

AU - Lukashin, K.

AU - Manak, J. J.

AU - Marchand, C.

AU - Maximon, L. C.

AU - McAleer, S.

AU - McKinnon, B.

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 - Morrow, S. A.

AU - Muccifora, V.

AU - Mueller, J.

AU - Mutchler, G. S.

AU - Nadel-Turonski, P.

AU - Napolitano, J.

AU - Nasseripour, R.

AU - Nelson, S. O.

AU - Niccolai, S.

AU - Niculescu, G.

AU - Niculescu, I.

AU - Niczyporuk, B. B.

AU - Niyazov, R. A.

AU - Nozar, M.

AU - O'Rielly, G. V.

AU - Osipenko, M.

AU - Ostrovidov, A. I.

AU - Park, K.

AU - Pasyuk, E.

AU - Peterson, G.

AU - Philips, S. A.

AU - Pierce, J.

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 - Riccardi, G.

AU - Ricco, G.

AU - Ripani, M.

AU - Ritchie, Barry

AU - Ronchetti, F.

AU - Rosner, G.

AU - Rossi, P.

AU - Rowntree, D.

AU - Rubin, P. D.

AU - Sabatié, F.

AU - Sabourov, K.

AU - Salgado, C.

AU - Santoro, J. P.

AU - Sapunenko, V.

AU - Schumacher, R. A.

AU - Serov, V. S.

AU - Shafi, A.

AU - Sharabian, Y. G.

AU - Shaw, J.

AU - Simionatto, S.

AU - Skabelin, A. V.

AU - Smith, E. S.

AU - Sober, D. I.

AU - Spraker, M.

AU - Stavinsky, A.

AU - Stepanyan, S. S.

AU - Stepanyan, S.

AU - Stokes, B. E.

AU - Stoler, P.

AU - Strakovsky, I. I.

AU - Strauch, S.

AU - Taiuti, M.

AU - Taylor, S.

AU - Tedeschi, D. J.

AU - Thoma, U.

AU - Thompson, R.

AU - Tkabladze, A.

AU - Tur, C.

AU - Ungaro, M.

AU - Vineyard, M. F.

AU - Vlassov, A. V.

AU - Wang, K.

AU - Weinstein, L. B.

AU - Weller, H.

AU - Weygand, D. P.

AU - Williams, M.

AU - Wolin, E.

AU - Wood, M. H.

AU - Yegneswaran, A.

AU - Yun, J.

AU - Zana, L.

AU - Zhang, J.

PY - 2005/11

Y1 - 2005/11

N2 - The polarized longitudinal-transverse structure function σLT' measures the interference between real and imaginary amplitudes in pion electroproduction and can be used to probe the coupling between resonant and nonresonant processes. We report new measurements of σLT' in the N(1440)12+ (Roper) resonance region at Q2=0.40 and 0.65GeV2 for both the π0p and π+n channels. The experiment was performed at Jefferson Lab with the CEBAF Large Acceptance Spectrometer (CLAS) using longitudinally polarized electrons at a beam energy of 1.515 GeV. Complete angular distributions were obtained and are compared to recent phenomenological models. The σLT'(π+n) channel shows a large sensitivity to the Roper-resonance multipoles M1- and S1- and provides new constraints on models of resonance formation.

AB - The polarized longitudinal-transverse structure function σLT' measures the interference between real and imaginary amplitudes in pion electroproduction and can be used to probe the coupling between resonant and nonresonant processes. We report new measurements of σLT' in the N(1440)12+ (Roper) resonance region at Q2=0.40 and 0.65GeV2 for both the π0p and π+n channels. The experiment was performed at Jefferson Lab with the CEBAF Large Acceptance Spectrometer (CLAS) using longitudinally polarized electrons at a beam energy of 1.515 GeV. Complete angular distributions were obtained and are compared to recent phenomenological models. The σLT'(π+n) channel shows a large sensitivity to the Roper-resonance multipoles M1- and S1- and provides new constraints on models of resonance formation.

UR - http://www.scopus.com/inward/record.url?scp=28844435300&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=28844435300&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.72.058202

DO - 10.1103/PhysRevC.72.058202

M3 - Article

AN - SCOPUS:28844435300

SN - 0556-2813

VL - 72

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 5

M1 - 058202

ER -

Measurement of the polarized structure function σlT' for pion electroproduction in the Roper-resonance region

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this