Electroexcitation of the Roper resonance for 1.7<Q2<4.5GeV2 in e→p→enπ+

I. G. Aznauryan, V. D. Burkert, W. Kim, K. Park, G. Adams, M. J. Amaryan, P. Ambrozewicz, M. Anghinolfi, G. Asryan, H. Avakian, H. Bagdasaryan, N. Baillie, J. P. Ball, N. A. Baltzell, S. Barrow, V. Batourine, M. Battaglieri, I. Bedlinskiy, M. Bektasoglu, M. BellisN. Benmouna, B. L. Berman, A. S. Biselli, L. Blaszczyk, B. E. Bonner, C. Bookwalter, S. Bouchigny, S. Boiarinov, R. Bradford, D. Branford, W. J. Briscoe, W. K. Brooks, S. Bültmann, C. Butuceanu, J. R. Calarco, S. L. Careccia, D. S. Carman, L. Casey, A. Cazes, S. Chen, L. Cheng, P. L. Cole, P. Collins, P. Coltharp, D. Cords, P. Corvisiero, D. Crabb, V. Crede, J. P. Cummings, D. Dale, N. Dashyan, R. De Masi, R. De Vita, E. De Sanctis, P. V. Degtyarenko, H. Denizli, L. Dennis, A. Deur, S. Dhamija, K. V. Dharmawardane, K. S. Dhuga, R. Dickson, C. Djalali, G. E. Dodge, J. Donnelly, D. Doughty, Michael Dugger, S. Dytman, O. P. Dzyubak, H. Egiyan, K. S. Egiyan, L. El Fassi, L. Elouadrhiri, P. Eugenio, R. Fatemi, G. Fedotov, G. Feldman, R. J. Feuerbach, T. A. Forest, A. Fradi, H. Funsten, M. Y. Gabrielyan, M. Garçon, G. Gavalian, N. Gevorgyan, G. P. Gilfoyle, K. L. Giovanetti, F. X. Girod, J. T. Goetz, W. Gohn, E. Golovatch, A. Gonenc, C. I O Gordon, R. W. Gothe, L. Graham, K. A. Griffioen, M. Guidal, M. Guillo, N. Guler, L. Guo, V. Gyurjyan, C. Hadjidakis, K. Hafidi, K. Hafnaoui, H. Hakobyan, R. S. Hakobyan, C. Hanretty, J. Hardie, N. Hassall, D. Heddle, F. W. Hersman, K. Hicks, I. Hleiqawi, M. Holtrop, C. E. Hyde, Y. Ilieva, D. G. Ireland, B. S. Ishkhanov, E. L. Isupov, M. M. Ito, D. Jenkins, H. S. Jo, J. R. Johnstone, K. Joo, H. G. Juengst, N. Kalantarians, D. Keller, J. D. Kellie, M. Khandaker, K. Y. Kim, A. Klein, F. J. Klein, A. V. Klimenko, M. Kossov, Z. Krahn, L. H. Kramer, V. Kubarovsky, J. Kuhn, S. E. Kuhn, S. V. Kuleshov, V. Kuznetsov, J. Lachniet, J. M. Laget, J. Langheinrich, D. Lawrence, T. Lee, Ji Li, A. C S Lima, K. Livingston, H. Y. Lu, K. Lukashin, M. MacCormick, N. Markov, P. Mattione, S. McAleer, B. McKinnon, J. W C McNabb, B. A. Mecking, S. Mehrabyan, J. J. Melone, M. D. Mestayer, C. A. Meyer, T. Mibe, K. Mikhailov, R. Minehart, M. Mirazita, R. Miskimen, V. Mokeev, L. Morand, B. Moreno, K. Moriya, S. A. Morrow, M. Moteabbed, J. Mueller, E. Munevar, G. S. Mutchler, P. Nadel-Turonski, R. Nasseripour, S. Niccolai, G. Niculescu, I. Niculescu, B. B. Niczyporuk, M. R. Niroula, R. A. Niyazov, M. Nozar, G. V. O'Rielly, M. Osipenko, A. I. Ostrovidov, S. Park, E. Pasyuk, C. Paterson, S. Anefalos Pereira, S. A. Philips, J. Pierce, N. Pivnyuk, D. Pocanic, O. Pogorelko, E. Polli, I. Popa, 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, G. Rosner, P. Rossi, D. Rowntree, P. D. Rubin, F. Sabatié, M. S. Saini, J. Salamanca, C. Salgado, J. P. Santoro, V. Sapunenko, D. Schott, R. A. Schumacher, V. S. Serov, Y. G. Sharabian, D. Sharov, J. Shaw, N. V. Shvedunov, A. V. Skabelin, E. S. Smith, L. C. Smith, D. I. Sober, D. Sokhan, A. Stavinsky, S. S. Stepanyan, S. Stepanyan, B. E. Stokes, P. Stoler, I. I. Strakovsky, S. Strauch, R. Suleiman, M. Taiuti, T. Takeuchi, D. J. Tedeschi, A. Tkabladze, S. Tkachenko, L. Todor, C. Tur, M. Ungaro, M. F. Vineyard, A. V. Vlassov, D. P. Watts, L. B. Weinstein, D. P. Weygand, M. Williams, E. Wolin, M. H. Wood, A. Yegneswaran, J. Yun, M. Yurov, L. Zana, B. Zhang, J. Zhang, B. Zhao, Z. W. Zhao

Research output: Contribution to journalArticle

70 Citations (Scopus)

Abstract

The helicity amplitudes of the electroexcitation of the Roper resonance are extracted for 1.7<Q2<4.5GeV2 from recent high precision JLab-CLAS cross section and longitudinally polarized beam asymmetry data for π+ electroproduction on protons at W=1.15-1.69 GeV. The analysis is made using two approaches, dispersion relations and a unitary isobar model, which give consistent Q2 behavior of the helicity amplitudes for the γ *p→N(1440)P11 transition. It is found that the transverse helicity amplitude A1/2, which is large and negative at Q2=0, becomes large and positive at Q2 2GeV2, and then drops slowly with Q2. The longitudinal helicity amplitude S1/2, which was previously found from CLAS e→p→epπ0,enπ+ data to be large and positive at Q2=0.4,0.65GeV2, drops with Q2. Available model predictions for γ*p→N(1440)P11 allow us to conclude that these results provide strong evidence in favor of N(1440)P11 as a first radial excitation of the 3q ground state. The results of the present paper also confirm the conclusion of our previous analysis for Q2<1 GeV2 that the presentation of N(1440)P11 as a qG3 hybrid state is ruled out.

Original languageEnglish (US)
Article number045209
JournalPhysical Review C - Nuclear Physics
Volume78
Issue number4
DOIs
StatePublished - Oct 27 2008

Fingerprint

isobars
asymmetry
ground state
protons
cross sections
predictions
excitation

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Aznauryan, I. G., Burkert, V. D., Kim, W., Park, K., Adams, G., Amaryan, M. J., ... Zhao, Z. W. (2008). Electroexcitation of the Roper resonance for 1.7<Q2<4.5GeV2 in e→p→enπ+. Physical Review C - Nuclear Physics, 78(4), [045209]. https://doi.org/10.1103/PhysRevC.78.045209

Electroexcitation of the Roper resonance for 1.7<Q2<4.5GeV2 in e→p→enπ+. / Aznauryan, I. G.; Burkert, V. D.; Kim, W.; Park, K.; Adams, G.; Amaryan, M. J.; Ambrozewicz, P.; Anghinolfi, M.; Asryan, G.; Avakian, H.; Bagdasaryan, H.; Baillie, N.; Ball, J. P.; Baltzell, N. A.; Barrow, S.; Batourine, V.; Battaglieri, M.; Bedlinskiy, I.; Bektasoglu, M.; Bellis, M.; Benmouna, N.; Berman, B. L.; Biselli, A. S.; Blaszczyk, L.; Bonner, B. E.; Bookwalter, C.; Bouchigny, S.; Boiarinov, S.; Bradford, R.; Branford, D.; Briscoe, W. J.; Brooks, W. K.; Bültmann, S.; Butuceanu, C.; Calarco, J. R.; Careccia, S. L.; Carman, D. S.; Casey, L.; Cazes, A.; Chen, S.; Cheng, L.; Cole, P. L.; Collins, P.; Coltharp, P.; Cords, D.; Corvisiero, P.; Crabb, D.; Crede, V.; Cummings, J. P.; Dale, D.; Dashyan, N.; De Masi, R.; De Vita, R.; De Sanctis, E.; Degtyarenko, P. V.; Denizli, H.; Dennis, L.; Deur, A.; Dhamija, S.; Dharmawardane, K. V.; Dhuga, K. S.; Dickson, R.; Djalali, C.; Dodge, G. E.; Donnelly, J.; Doughty, D.; Dugger, Michael; Dytman, S.; Dzyubak, O. P.; Egiyan, H.; Egiyan, K. S.; El Fassi, L.; Elouadrhiri, L.; Eugenio, P.; Fatemi, R.; Fedotov, G.; Feldman, G.; Feuerbach, R. J.; Forest, T. A.; Fradi, A.; Funsten, H.; Gabrielyan, M. Y.; Garçon, M.; Gavalian, G.; Gevorgyan, N.; Gilfoyle, G. P.; Giovanetti, K. L.; Girod, F. X.; Goetz, J. T.; Gohn, W.; Golovatch, E.; Gonenc, A.; Gordon, C. I O; Gothe, R. W.; Graham, L.; Griffioen, K. A.; Guidal, M.; Guillo, M.; Guler, N.; Guo, L.; Gyurjyan, V.; Hadjidakis, C.; Hafidi, K.; Hafnaoui, K.; Hakobyan, H.; Hakobyan, R. S.; Hanretty, C.; Hardie, J.; Hassall, N.; Heddle, D.; Hersman, F. W.; Hicks, K.; Hleiqawi, I.; Holtrop, M.; Hyde, C. E.; Ilieva, Y.; Ireland, D. G.; Ishkhanov, B. S.; Isupov, E. L.; Ito, M. M.; Jenkins, D.; Jo, H. S.; Johnstone, J. R.; Joo, K.; Juengst, H. G.; Kalantarians, N.; Keller, D.; Kellie, J. D.; Khandaker, M.; Kim, K. Y.; Klein, A.; Klein, F. J.; Klimenko, A. V.; Kossov, M.; Krahn, Z.; Kramer, L. H.; Kubarovsky, V.; Kuhn, J.; Kuhn, S. E.; Kuleshov, S. V.; Kuznetsov, V.; Lachniet, J.; Laget, J. M.; Langheinrich, J.; Lawrence, D.; Lee, T.; Li, Ji; Lima, A. C S; Livingston, K.; Lu, H. Y.; Lukashin, K.; MacCormick, M.; Markov, N.; Mattione, P.; McAleer, S.; McKinnon, B.; McNabb, J. W C; Mecking, B. A.; Mehrabyan, S.; Melone, J. J.; Mestayer, M. D.; Meyer, C. A.; Mibe, T.; Mikhailov, K.; Minehart, R.; Mirazita, M.; Miskimen, R.; Mokeev, V.; Morand, L.; Moreno, B.; Moriya, K.; Morrow, S. A.; Moteabbed, M.; Mueller, J.; Munevar, E.; Mutchler, G. S.; Nadel-Turonski, P.; Nasseripour, R.; Niccolai, S.; Niculescu, G.; Niculescu, I.; Niczyporuk, B. B.; Niroula, M. R.; Niyazov, R. A.; Nozar, M.; O'Rielly, G. V.; Osipenko, M.; Ostrovidov, A. I.; Park, S.; Pasyuk, E.; Paterson, C.; Pereira, S. Anefalos; Philips, S. A.; Pierce, J.; Pivnyuk, N.; Pocanic, D.; Pogorelko, O.; Polli, E.; Popa, I.; Pozdniakov, S.; Preedom, B. M.; Price, J. W.; Prok, Y.; Protopopescu, D.; Qin, L. M.; Raue, B. A.; Riccardi, G.; Ricco, G.; Ripani, M.; Ritchie, Barry; Rosner, G.; Rossi, P.; Rowntree, D.; Rubin, P. D.; Sabatié, F.; Saini, M. S.; Salamanca, J.; Salgado, C.; Santoro, J. P.; Sapunenko, V.; Schott, D.; Schumacher, R. A.; Serov, V. S.; Sharabian, Y. G.; Sharov, D.; Shaw, J.; Shvedunov, N. V.; Skabelin, A. V.; Smith, E. S.; Smith, L. C.; Sober, D. I.; Sokhan, D.; Stavinsky, A.; Stepanyan, S. S.; Stepanyan, S.; Stokes, B. E.; Stoler, P.; Strakovsky, I. I.; Strauch, S.; Suleiman, R.; Taiuti, M.; Takeuchi, T.; Tedeschi, D. J.; Tkabladze, A.; Tkachenko, S.; Todor, L.; Tur, C.; Ungaro, M.; Vineyard, M. F.; Vlassov, A. V.; Watts, D. P.; Weinstein, L. B.; Weygand, D. P.; Williams, M.; Wolin, E.; Wood, M. H.; Yegneswaran, A.; Yun, J.; Yurov, M.; Zana, L.; Zhang, B.; Zhang, J.; Zhao, B.; Zhao, Z. W.

In: Physical Review C - Nuclear Physics, Vol. 78, No. 4, 045209, 27.10.2008.

Research output: Contribution to journalArticle

Aznauryan, IG, Burkert, VD, Kim, W, Park, K, Adams, G, Amaryan, MJ, Ambrozewicz, P, Anghinolfi, M, Asryan, G, Avakian, H, Bagdasaryan, H, Baillie, N, Ball, JP, Baltzell, NA, Barrow, S, Batourine, V, Battaglieri, M, Bedlinskiy, I, Bektasoglu, M, Bellis, M, Benmouna, N, Berman, BL, Biselli, AS, Blaszczyk, L, Bonner, BE, Bookwalter, C, Bouchigny, S, Boiarinov, S, Bradford, R, Branford, D, Briscoe, WJ, Brooks, WK, Bültmann, S, Butuceanu, C, Calarco, JR, Careccia, SL, Carman, DS, Casey, L, Cazes, A, Chen, S, Cheng, L, Cole, PL, Collins, P, Coltharp, P, Cords, D, Corvisiero, P, Crabb, D, Crede, V, Cummings, JP, Dale, D, Dashyan, N, De Masi, R, De Vita, R, De Sanctis, E, Degtyarenko, PV, Denizli, H, Dennis, L, Deur, A, Dhamija, S, Dharmawardane, KV, Dhuga, KS, Dickson, R, Djalali, C, Dodge, GE, Donnelly, J, Doughty, D, Dugger, M, Dytman, S, Dzyubak, OP, Egiyan, H, Egiyan, KS, El Fassi, L, Elouadrhiri, L, Eugenio, P, Fatemi, R, Fedotov, G, Feldman, G, Feuerbach, RJ, Forest, TA, Fradi, A, Funsten, H, Gabrielyan, MY, Garçon, M, Gavalian, G, Gevorgyan, N, Gilfoyle, GP, Giovanetti, KL, Girod, FX, Goetz, JT, Gohn, W, Golovatch, E, Gonenc, A, Gordon, CIO, Gothe, RW, Graham, L, Griffioen, KA, Guidal, M, Guillo, M, Guler, N, Guo, L, Gyurjyan, V, Hadjidakis, C, Hafidi, K, Hafnaoui, K, Hakobyan, H, Hakobyan, RS, Hanretty, C, Hardie, J, Hassall, N, Heddle, D, Hersman, FW, Hicks, K, Hleiqawi, I, Holtrop, M, Hyde, CE, Ilieva, Y, Ireland, DG, Ishkhanov, BS, Isupov, EL, Ito, MM, Jenkins, D, Jo, HS, Johnstone, JR, Joo, K, Juengst, HG, Kalantarians, N, Keller, D, Kellie, JD, Khandaker, M, Kim, KY, Klein, A, Klein, FJ, Klimenko, AV, Kossov, M, Krahn, Z, Kramer, LH, Kubarovsky, V, Kuhn, J, Kuhn, SE, Kuleshov, SV, Kuznetsov, V, Lachniet, J, Laget, JM, Langheinrich, J, Lawrence, D, Lee, T, Li, J, Lima, ACS, Livingston, K, Lu, HY, Lukashin, K, MacCormick, M, Markov, N, Mattione, P, McAleer, S, McKinnon, B, McNabb, JWC, Mecking, BA, Mehrabyan, S, Melone, JJ, Mestayer, MD, Meyer, CA, Mibe, T, Mikhailov, K, Minehart, R, Mirazita, M, Miskimen, R, Mokeev, V, Morand, L, Moreno, B, Moriya, K, Morrow, SA, Moteabbed, M, Mueller, J, Munevar, E, Mutchler, GS, Nadel-Turonski, P, Nasseripour, R, Niccolai, S, Niculescu, G, Niculescu, I, Niczyporuk, BB, Niroula, MR, Niyazov, RA, Nozar, M, O'Rielly, GV, Osipenko, M, Ostrovidov, AI, Park, S, Pasyuk, E, Paterson, C, Pereira, SA, Philips, SA, Pierce, J, Pivnyuk, N, Pocanic, D, Pogorelko, O, Polli, E, Popa, I, Pozdniakov, S, Preedom, BM, Price, JW, Prok, Y, Protopopescu, D, Qin, LM, Raue, BA, Riccardi, G, Ricco, G, Ripani, M, Ritchie, B, Rosner, G, Rossi, P, Rowntree, D, Rubin, PD, Sabatié, F, Saini, MS, Salamanca, J, Salgado, C, Santoro, JP, Sapunenko, V, Schott, D, Schumacher, RA, Serov, VS, Sharabian, YG, Sharov, D, Shaw, J, Shvedunov, NV, Skabelin, AV, Smith, ES, Smith, LC, Sober, DI, Sokhan, D, Stavinsky, A, Stepanyan, SS, Stepanyan, S, Stokes, BE, Stoler, P, Strakovsky, II, Strauch, S, Suleiman, R, Taiuti, M, Takeuchi, T, Tedeschi, DJ, Tkabladze, A, Tkachenko, S, Todor, L, Tur, C, Ungaro, M, Vineyard, MF, Vlassov, AV, Watts, DP, Weinstein, LB, Weygand, DP, Williams, M, Wolin, E, Wood, MH, Yegneswaran, A, Yun, J, Yurov, M, Zana, L, Zhang, B, Zhang, J, Zhao, B & Zhao, ZW 2008, 'Electroexcitation of the Roper resonance for 1.7<Q2<4.5GeV2 in e→p→enπ+', Physical Review C - Nuclear Physics, vol. 78, no. 4, 045209. https://doi.org/10.1103/PhysRevC.78.045209
Aznauryan, I. G. ; Burkert, V. D. ; Kim, W. ; Park, K. ; Adams, G. ; Amaryan, M. J. ; Ambrozewicz, P. ; Anghinolfi, M. ; Asryan, G. ; Avakian, H. ; Bagdasaryan, H. ; Baillie, N. ; Ball, J. P. ; Baltzell, N. A. ; Barrow, S. ; Batourine, V. ; Battaglieri, M. ; Bedlinskiy, I. ; Bektasoglu, M. ; Bellis, M. ; Benmouna, N. ; Berman, B. L. ; Biselli, A. S. ; Blaszczyk, L. ; Bonner, B. E. ; Bookwalter, C. ; Bouchigny, S. ; Boiarinov, S. ; Bradford, R. ; Branford, D. ; Briscoe, W. J. ; Brooks, W. K. ; Bültmann, S. ; Butuceanu, C. ; Calarco, J. R. ; Careccia, S. L. ; Carman, D. S. ; Casey, L. ; Cazes, A. ; Chen, S. ; Cheng, L. ; Cole, P. L. ; Collins, P. ; Coltharp, P. ; Cords, D. ; Corvisiero, P. ; Crabb, D. ; Crede, V. ; Cummings, J. P. ; Dale, D. ; Dashyan, N. ; De Masi, R. ; De Vita, R. ; De Sanctis, E. ; Degtyarenko, P. V. ; Denizli, H. ; Dennis, L. ; Deur, A. ; Dhamija, S. ; Dharmawardane, K. V. ; Dhuga, K. S. ; Dickson, R. ; Djalali, C. ; Dodge, G. E. ; Donnelly, J. ; Doughty, D. ; Dugger, Michael ; Dytman, S. ; Dzyubak, O. P. ; Egiyan, H. ; Egiyan, K. S. ; El Fassi, L. ; Elouadrhiri, L. ; Eugenio, P. ; Fatemi, R. ; Fedotov, G. ; Feldman, G. ; Feuerbach, R. J. ; Forest, T. A. ; Fradi, A. ; Funsten, H. ; Gabrielyan, M. Y. ; Garçon, M. ; Gavalian, G. ; Gevorgyan, N. ; Gilfoyle, G. P. ; Giovanetti, K. L. ; Girod, F. X. ; Goetz, J. T. ; Gohn, W. ; Golovatch, E. ; Gonenc, A. ; Gordon, C. I O ; Gothe, R. W. ; Graham, L. ; Griffioen, K. A. ; Guidal, M. ; Guillo, M. ; Guler, N. ; Guo, L. ; Gyurjyan, V. ; Hadjidakis, C. ; Hafidi, K. ; Hafnaoui, K. ; Hakobyan, H. ; Hakobyan, R. S. ; Hanretty, C. ; Hardie, J. ; Hassall, N. ; Heddle, D. ; Hersman, F. W. ; Hicks, K. ; Hleiqawi, I. ; Holtrop, M. ; Hyde, C. E. ; Ilieva, Y. ; Ireland, D. G. ; Ishkhanov, B. S. ; Isupov, E. L. ; Ito, M. M. ; Jenkins, D. ; Jo, H. S. ; Johnstone, J. R. ; Joo, K. ; Juengst, H. G. ; Kalantarians, N. ; Keller, D. ; Kellie, J. D. ; Khandaker, M. ; Kim, K. Y. ; Klein, A. ; Klein, F. J. ; Klimenko, A. V. ; Kossov, M. ; Krahn, Z. ; Kramer, L. H. ; Kubarovsky, V. ; Kuhn, J. ; Kuhn, S. E. ; Kuleshov, S. V. ; Kuznetsov, V. ; Lachniet, J. ; Laget, J. M. ; Langheinrich, J. ; Lawrence, D. ; Lee, T. ; Li, Ji ; Lima, A. C S ; Livingston, K. ; Lu, H. Y. ; Lukashin, K. ; MacCormick, M. ; Markov, N. ; Mattione, P. ; McAleer, S. ; McKinnon, B. ; McNabb, J. W C ; Mecking, B. A. ; Mehrabyan, S. ; Melone, J. J. ; Mestayer, M. D. ; Meyer, C. A. ; Mibe, T. ; Mikhailov, K. ; Minehart, R. ; Mirazita, M. ; Miskimen, R. ; Mokeev, V. ; Morand, L. ; Moreno, B. ; Moriya, K. ; Morrow, S. A. ; Moteabbed, M. ; Mueller, J. ; Munevar, E. ; Mutchler, G. S. ; Nadel-Turonski, P. ; Nasseripour, R. ; Niccolai, S. ; Niculescu, G. ; Niculescu, I. ; Niczyporuk, B. B. ; Niroula, M. R. ; Niyazov, R. A. ; Nozar, M. ; O'Rielly, G. V. ; Osipenko, M. ; Ostrovidov, A. I. ; Park, S. ; Pasyuk, E. ; Paterson, C. ; Pereira, S. Anefalos ; Philips, S. A. ; Pierce, J. ; Pivnyuk, N. ; Pocanic, D. ; Pogorelko, O. ; Polli, E. ; Popa, I. ; Pozdniakov, S. ; Preedom, B. M. ; Price, J. W. ; Prok, Y. ; Protopopescu, D. ; Qin, L. M. ; Raue, B. A. ; Riccardi, G. ; Ricco, G. ; Ripani, M. ; Ritchie, Barry ; Rosner, G. ; Rossi, P. ; Rowntree, D. ; Rubin, P. D. ; Sabatié, F. ; Saini, M. S. ; Salamanca, J. ; Salgado, C. ; Santoro, J. P. ; Sapunenko, V. ; Schott, D. ; Schumacher, R. A. ; Serov, V. S. ; Sharabian, Y. G. ; Sharov, D. ; Shaw, J. ; Shvedunov, N. V. ; Skabelin, A. V. ; Smith, E. S. ; Smith, L. C. ; Sober, D. I. ; Sokhan, D. ; Stavinsky, A. ; Stepanyan, S. S. ; Stepanyan, S. ; Stokes, B. E. ; Stoler, P. ; Strakovsky, I. I. ; Strauch, S. ; Suleiman, R. ; Taiuti, M. ; Takeuchi, T. ; Tedeschi, D. J. ; Tkabladze, A. ; Tkachenko, S. ; Todor, L. ; Tur, C. ; Ungaro, M. ; Vineyard, M. F. ; Vlassov, A. V. ; Watts, D. P. ; Weinstein, L. B. ; Weygand, D. P. ; Williams, M. ; Wolin, E. ; Wood, M. H. ; Yegneswaran, A. ; Yun, J. ; Yurov, M. ; Zana, L. ; Zhang, B. ; Zhang, J. ; Zhao, B. ; Zhao, Z. W. / Electroexcitation of the Roper resonance for 1.7<Q2<4.5GeV2 in e→p→enπ+. In: Physical Review C - Nuclear Physics. 2008 ; Vol. 78, No. 4.
@article{c70d0a510c79448eb8ea33660ef986fe,
title = "Electroexcitation of the Roper resonance for 1.7<Q2<4.5GeV2 in e→p→enπ+",
abstract = "The helicity amplitudes of the electroexcitation of the Roper resonance are extracted for 1.7<Q2<4.5GeV2 from recent high precision JLab-CLAS cross section and longitudinally polarized beam asymmetry data for π+ electroproduction on protons at W=1.15-1.69 GeV. The analysis is made using two approaches, dispersion relations and a unitary isobar model, which give consistent Q2 behavior of the helicity amplitudes for the γ *p→N(1440)P11 transition. It is found that the transverse helicity amplitude A1/2, which is large and negative at Q2=0, becomes large and positive at Q2 2GeV2, and then drops slowly with Q2. The longitudinal helicity amplitude S1/2, which was previously found from CLAS e→p→epπ0,enπ+ data to be large and positive at Q2=0.4,0.65GeV2, drops with Q2. Available model predictions for γ*p→N(1440)P11 allow us to conclude that these results provide strong evidence in favor of N(1440)P11 as a first radial excitation of the 3q ground state. The results of the present paper also confirm the conclusion of our previous analysis for Q2<1 GeV2 that the presentation of N(1440)P11 as a qG3 hybrid state is ruled out.",
author = "Aznauryan, {I. G.} and Burkert, {V. D.} and W. Kim and K. Park and G. Adams and Amaryan, {M. J.} and P. Ambrozewicz and M. Anghinolfi and G. Asryan 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 I. Bedlinskiy and M. Bektasoglu and M. Bellis and N. Benmouna and Berman, {B. L.} and Biselli, {A. S.} and L. Blaszczyk and Bonner, {B. E.} and C. Bookwalter and S. Bouchigny and S. Boiarinov and R. Bradford and D. Branford and Briscoe, {W. J.} and Brooks, {W. K.} and S. B{\"u}ltmann and C. Butuceanu and Calarco, {J. R.} and Careccia, {S. L.} and Carman, {D. S.} and L. Casey and A. Cazes and S. Chen and L. Cheng and Cole, {P. L.} and P. Collins and P. Coltharp and D. Cords and P. Corvisiero and D. Crabb and V. Crede and Cummings, {J. P.} and D. Dale and N. Dashyan and {De Masi}, R. and {De Vita}, R. and {De Sanctis}, E. and Degtyarenko, {P. V.} and H. Denizli and L. Dennis and A. Deur and S. Dhamija and Dharmawardane, {K. V.} and Dhuga, {K. S.} and R. Dickson and C. Djalali and Dodge, {G. E.} and J. Donnelly and D. Doughty and Michael Dugger and S. Dytman and Dzyubak, {O. P.} and H. Egiyan and Egiyan, {K. S.} and {El Fassi}, L. and L. Elouadrhiri and P. Eugenio and R. Fatemi and G. Fedotov and G. Feldman and Feuerbach, {R. J.} and Forest, {T. A.} and A. Fradi and H. Funsten and Gabrielyan, {M. Y.} and M. Gar{\cc}on and G. Gavalian and N. Gevorgyan and Gilfoyle, {G. P.} and Giovanetti, {K. L.} and Girod, {F. X.} and Goetz, {J. T.} and W. Gohn and E. Golovatch and A. Gonenc and Gordon, {C. I O} and Gothe, {R. W.} and L. Graham and Griffioen, {K. A.} and M. Guidal and M. Guillo and N. Guler and L. Guo and V. Gyurjyan and C. Hadjidakis and K. Hafidi and K. Hafnaoui and H. Hakobyan and Hakobyan, {R. S.} and C. Hanretty and J. Hardie and N. Hassall and D. Heddle and Hersman, {F. W.} and K. Hicks and I. Hleiqawi and M. Holtrop and Hyde, {C. E.} and Y. Ilieva and Ireland, {D. G.} and Ishkhanov, {B. S.} and Isupov, {E. L.} and Ito, {M. M.} and D. Jenkins and Jo, {H. S.} and Johnstone, {J. R.} and K. Joo and Juengst, {H. G.} and N. Kalantarians and D. Keller and Kellie, {J. D.} and M. Khandaker and Kim, {K. Y.} and A. Klein and Klein, {F. J.} and Klimenko, {A. V.} and M. Kossov and Z. Krahn and Kramer, {L. H.} and V. Kubarovsky and J. Kuhn and Kuhn, {S. E.} and Kuleshov, {S. V.} and V. Kuznetsov and J. Lachniet and Laget, {J. M.} and J. Langheinrich and D. Lawrence and T. Lee and Ji Li and Lima, {A. C S} and K. Livingston and Lu, {H. Y.} and K. Lukashin and M. MacCormick and N. Markov and P. Mattione and S. McAleer and B. McKinnon and McNabb, {J. W C} and Mecking, {B. A.} and S. Mehrabyan and Melone, {J. J.} and Mestayer, {M. D.} and Meyer, {C. A.} and T. Mibe and K. Mikhailov and R. Minehart and M. Mirazita and R. Miskimen and V. Mokeev and L. Morand and B. Moreno and K. Moriya and Morrow, {S. A.} and M. Moteabbed and J. Mueller and E. Munevar and Mutchler, {G. S.} and P. Nadel-Turonski and R. Nasseripour and S. Niccolai and G. Niculescu and I. Niculescu and Niczyporuk, {B. B.} and Niroula, {M. R.} and Niyazov, {R. A.} and M. Nozar and O'Rielly, {G. V.} and M. Osipenko and Ostrovidov, {A. I.} and S. Park and E. Pasyuk and C. Paterson and Pereira, {S. Anefalos} and Philips, {S. A.} and J. Pierce and N. Pivnyuk and D. Pocanic and O. Pogorelko and E. Polli and I. Popa 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 G. Rosner and P. Rossi and D. Rowntree and Rubin, {P. D.} and F. Sabati{\'e} and Saini, {M. S.} and J. Salamanca and C. Salgado and Santoro, {J. P.} and V. Sapunenko and D. Schott and Schumacher, {R. A.} and Serov, {V. S.} and Sharabian, {Y. G.} and D. Sharov and J. Shaw and Shvedunov, {N. V.} and Skabelin, {A. V.} and Smith, {E. S.} and Smith, {L. C.} and Sober, {D. I.} and D. Sokhan 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 R. Suleiman and M. Taiuti and T. Takeuchi and Tedeschi, {D. J.} and A. Tkabladze and S. Tkachenko and L. Todor and C. Tur and M. Ungaro and Vineyard, {M. F.} and Vlassov, {A. V.} and Watts, {D. P.} and Weinstein, {L. B.} and Weygand, {D. P.} and M. Williams and E. Wolin and Wood, {M. H.} and A. Yegneswaran and J. Yun and M. Yurov and L. Zana and B. Zhang and J. Zhang and B. Zhao and Zhao, {Z. W.}",
year = "2008",
month = "10",
day = "27",
doi = "10.1103/PhysRevC.78.045209",
language = "English (US)",
volume = "78",
journal = "Physical Review C - Nuclear Physics",
issn = "0556-2813",
publisher = "American Physical Society",
number = "4",

}

TY - JOUR

T1 - Electroexcitation of the Roper resonance for 1.7<Q2<4.5GeV2 in e→p→enπ+

AU - Aznauryan, I. G.

AU - Burkert, V. D.

AU - Kim, W.

AU - Park, K.

AU - Adams, G.

AU - Amaryan, M. J.

AU - Ambrozewicz, P.

AU - Anghinolfi, M.

AU - Asryan, G.

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 - Bedlinskiy, I.

AU - Bektasoglu, M.

AU - Bellis, M.

AU - Benmouna, N.

AU - Berman, B. L.

AU - Biselli, A. S.

AU - Blaszczyk, L.

AU - Bonner, B. E.

AU - Bookwalter, C.

AU - Bouchigny, S.

AU - Boiarinov, S.

AU - Bradford, R.

AU - Branford, D.

AU - Briscoe, W. J.

AU - Brooks, W. K.

AU - Bültmann, S.

AU - Butuceanu, C.

AU - Calarco, J. R.

AU - Careccia, S. L.

AU - Carman, D. S.

AU - Casey, L.

AU - Cazes, A.

AU - Chen, S.

AU - Cheng, L.

AU - Cole, P. L.

AU - Collins, P.

AU - Coltharp, P.

AU - Cords, D.

AU - Corvisiero, P.

AU - Crabb, D.

AU - Crede, V.

AU - Cummings, J. P.

AU - Dale, D.

AU - Dashyan, N.

AU - De Masi, R.

AU - De Vita, R.

AU - De Sanctis, E.

AU - Degtyarenko, P. V.

AU - Denizli, H.

AU - Dennis, L.

AU - Deur, A.

AU - Dhamija, S.

AU - Dharmawardane, K. V.

AU - Dhuga, K. S.

AU - Dickson, R.

AU - Djalali, C.

AU - Dodge, G. E.

AU - Donnelly, J.

AU - Doughty, D.

AU - Dugger, Michael

AU - Dytman, S.

AU - Dzyubak, O. P.

AU - Egiyan, H.

AU - Egiyan, K. S.

AU - El Fassi, L.

AU - Elouadrhiri, L.

AU - Eugenio, P.

AU - Fatemi, R.

AU - Fedotov, G.

AU - Feldman, G.

AU - Feuerbach, R. J.

AU - Forest, T. A.

AU - Fradi, A.

AU - Funsten, H.

AU - Gabrielyan, M. Y.

AU - Garçon, M.

AU - Gavalian, G.

AU - Gevorgyan, N.

AU - Gilfoyle, G. P.

AU - Giovanetti, K. L.

AU - Girod, F. X.

AU - Goetz, J. T.

AU - Gohn, W.

AU - Golovatch, E.

AU - Gonenc, A.

AU - Gordon, C. I O

AU - Gothe, R. W.

AU - Graham, L.

AU - Griffioen, K. A.

AU - Guidal, M.

AU - Guillo, M.

AU - Guler, N.

AU - Guo, L.

AU - Gyurjyan, V.

AU - Hadjidakis, C.

AU - Hafidi, K.

AU - Hafnaoui, K.

AU - Hakobyan, H.

AU - Hakobyan, R. S.

AU - Hanretty, C.

AU - Hardie, J.

AU - Hassall, N.

AU - Heddle, D.

AU - Hersman, F. W.

AU - Hicks, K.

AU - Hleiqawi, I.

AU - Holtrop, M.

AU - Hyde, C. E.

AU - Ilieva, Y.

AU - Ireland, D. G.

AU - Ishkhanov, B. S.

AU - Isupov, E. L.

AU - Ito, M. M.

AU - Jenkins, D.

AU - Jo, H. S.

AU - Johnstone, J. R.

AU - Joo, K.

AU - Juengst, H. G.

AU - Kalantarians, N.

AU - Keller, D.

AU - Kellie, J. D.

AU - Khandaker, M.

AU - Kim, K. Y.

AU - Klein, A.

AU - Klein, F. J.

AU - Klimenko, A. V.

AU - Kossov, M.

AU - Krahn, Z.

AU - Kramer, L. H.

AU - Kubarovsky, V.

AU - Kuhn, J.

AU - Kuhn, S. E.

AU - Kuleshov, S. V.

AU - Kuznetsov, V.

AU - Lachniet, J.

AU - Laget, J. M.

AU - Langheinrich, J.

AU - Lawrence, D.

AU - Lee, T.

AU - Li, Ji

AU - Lima, A. C S

AU - Livingston, K.

AU - Lu, H. Y.

AU - Lukashin, K.

AU - MacCormick, M.

AU - Markov, N.

AU - Mattione, P.

AU - McAleer, S.

AU - McKinnon, B.

AU - McNabb, J. W C

AU - Mecking, B. A.

AU - Mehrabyan, S.

AU - Melone, J. J.

AU - Mestayer, M. D.

AU - Meyer, C. A.

AU - Mibe, T.

AU - Mikhailov, K.

AU - Minehart, R.

AU - Mirazita, M.

AU - Miskimen, R.

AU - Mokeev, V.

AU - Morand, L.

AU - Moreno, B.

AU - Moriya, K.

AU - Morrow, S. A.

AU - Moteabbed, M.

AU - Mueller, J.

AU - Munevar, E.

AU - Mutchler, G. S.

AU - Nadel-Turonski, P.

AU - Nasseripour, R.

AU - Niccolai, S.

AU - Niculescu, G.

AU - Niculescu, I.

AU - Niczyporuk, B. B.

AU - Niroula, M. R.

AU - Niyazov, R. A.

AU - Nozar, M.

AU - O'Rielly, G. V.

AU - Osipenko, M.

AU - Ostrovidov, A. I.

AU - Park, S.

AU - Pasyuk, E.

AU - Paterson, C.

AU - Pereira, S. Anefalos

AU - Philips, S. A.

AU - Pierce, J.

AU - Pivnyuk, N.

AU - Pocanic, D.

AU - Pogorelko, O.

AU - Polli, E.

AU - Popa, I.

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 - Rosner, G.

AU - Rossi, P.

AU - Rowntree, D.

AU - Rubin, P. D.

AU - Sabatié, F.

AU - Saini, M. S.

AU - Salamanca, J.

AU - Salgado, C.

AU - Santoro, J. P.

AU - Sapunenko, V.

AU - Schott, D.

AU - Schumacher, R. A.

AU - Serov, V. S.

AU - Sharabian, Y. G.

AU - Sharov, D.

AU - Shaw, J.

AU - Shvedunov, N. V.

AU - Skabelin, A. V.

AU - Smith, E. S.

AU - Smith, L. C.

AU - Sober, D. I.

AU - Sokhan, D.

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 - Suleiman, R.

AU - Taiuti, M.

AU - Takeuchi, T.

AU - Tedeschi, D. J.

AU - Tkabladze, A.

AU - Tkachenko, S.

AU - Todor, L.

AU - Tur, C.

AU - Ungaro, M.

AU - Vineyard, M. F.

AU - Vlassov, A. V.

AU - Watts, D. P.

AU - Weinstein, L. B.

AU - Weygand, D. P.

AU - Williams, M.

AU - Wolin, E.

AU - Wood, M. H.

AU - Yegneswaran, A.

AU - Yun, J.

AU - Yurov, M.

AU - Zana, L.

AU - Zhang, B.

AU - Zhang, J.

AU - Zhao, B.

AU - Zhao, Z. W.

PY - 2008/10/27

Y1 - 2008/10/27

N2 - The helicity amplitudes of the electroexcitation of the Roper resonance are extracted for 1.7<Q2<4.5GeV2 from recent high precision JLab-CLAS cross section and longitudinally polarized beam asymmetry data for π+ electroproduction on protons at W=1.15-1.69 GeV. The analysis is made using two approaches, dispersion relations and a unitary isobar model, which give consistent Q2 behavior of the helicity amplitudes for the γ *p→N(1440)P11 transition. It is found that the transverse helicity amplitude A1/2, which is large and negative at Q2=0, becomes large and positive at Q2 2GeV2, and then drops slowly with Q2. The longitudinal helicity amplitude S1/2, which was previously found from CLAS e→p→epπ0,enπ+ data to be large and positive at Q2=0.4,0.65GeV2, drops with Q2. Available model predictions for γ*p→N(1440)P11 allow us to conclude that these results provide strong evidence in favor of N(1440)P11 as a first radial excitation of the 3q ground state. The results of the present paper also confirm the conclusion of our previous analysis for Q2<1 GeV2 that the presentation of N(1440)P11 as a qG3 hybrid state is ruled out.

AB - The helicity amplitudes of the electroexcitation of the Roper resonance are extracted for 1.7<Q2<4.5GeV2 from recent high precision JLab-CLAS cross section and longitudinally polarized beam asymmetry data for π+ electroproduction on protons at W=1.15-1.69 GeV. The analysis is made using two approaches, dispersion relations and a unitary isobar model, which give consistent Q2 behavior of the helicity amplitudes for the γ *p→N(1440)P11 transition. It is found that the transverse helicity amplitude A1/2, which is large and negative at Q2=0, becomes large and positive at Q2 2GeV2, and then drops slowly with Q2. The longitudinal helicity amplitude S1/2, which was previously found from CLAS e→p→epπ0,enπ+ data to be large and positive at Q2=0.4,0.65GeV2, drops with Q2. Available model predictions for γ*p→N(1440)P11 allow us to conclude that these results provide strong evidence in favor of N(1440)P11 as a first radial excitation of the 3q ground state. The results of the present paper also confirm the conclusion of our previous analysis for Q2<1 GeV2 that the presentation of N(1440)P11 as a qG3 hybrid state is ruled out.

UR - http://www.scopus.com/inward/record.url?scp=55949134648&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=55949134648&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.78.045209

DO - 10.1103/PhysRevC.78.045209

M3 - Article

AN - SCOPUS:55949134648

VL - 78

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

SN - 0556-2813

IS - 4

M1 - 045209

ER -