The ep → e′pη reaction at and above the S11 (1535) baryon resonance

R. Thompson, S. Dytman, K. Y. Kim, J. Mueller, G. S. Adams, M. J. Amaryan, E. Anciant, M. Anghinolfi, B. Asavapibhop, T. Auger, G. Audit, H. Avakian, S. Barrow, M. Battaglieri, K. Beard, M. Bektasoglu, W. Bertozzi, N. Bianchi, A. Biselli, S. BoiarinovB. E. Bonner, W. J. Briscoe, W. Brooks, V. D. Burkert, J. R. Calarco, G. Capitani, D. S. Carman, B. Carnahan, P. L. Cole, A. Coleman, J. Connelly, D. Cords, P. Corvisiero, D. Crabb, H. Crannell, J. Cummings, D. Day, P. V. Degtyarenko, R. A. Demirchyan, L. C. Dennis, A. Deppman, E. De Sanctis, R. De Vita, K. S. Dhuga, C. Djalali, G. E. Dodge, D. Doughty, P. Dragovitsch, Michael Dugger, M. Eckhause, Y. V. Efremenko, H. Egiyan, K. S. Egiyan, E. Elouadrhiri, L. Farhi, R. J. Feuerbach, J. Ficenec, K. Fissum, A. Freyberger, H. Funsten, M. Gai, V. B. Gavrilov, G. P. Gilfoyle, K. Giovanetti, S. Gilad, P. Girard, K. A. Griffioen, M. Guidal, M. Guillo, V. Gyurjyan, D. Hancock, J. Hardie, D. Heddle, J. Heisenberg, F. W. Hersman, K. Hicks, R. S. Hicks, M. Holtrop, C. E. Hyde-Wright, M. M. Ito, D. Jenkins, K. Joo, J. Kane, M. Khandaker, W. Kim, A. Klein, F. J. Klein, M. Klusman, M. Kossov, S. E. Kuhn, Y. Kuang, J. M. Laget, D. Lawrence, G. A. Leskin, A. Longhi, K. Loukachine, M. Lucas, R. Magahiz, R. W. Major, J. J. Manak, C. Marchand, S. K. Matthews, S. McAleer, J. McCarthy, J. W C McNabb, B. A. Mecking, M. D. Mestayer, C. A. Meyer, R. Minehart, M. Mirazita, R. Miskimen, V. Muccifora, G. S. Mutchler, J. Napolitano, R. A. Niyazov, M. S. Ohandjanyan, J. T. O'Brien, A. Opper, Y. Patois, G. A. Peterson, S. Philips, N. Pivnyuk, D. Pocanic, O. Pogorelko, E. Polli, B. M. Preedom, J. W. Price, E. M. Qin, B. A. Raue, A. R. Reolon, G. Riccardi, G. Ricco, M. Ripani, Barry Ritchie, F. Ronchetti, P. Rossi, F. Roudot, D. Rowntree, P. D. Rubin, C. W. Salgado, M. Sanzone, V. Sapunenko, A. Sarty, M. Sargsyan, R. A. Schumacher, A. Shafi, Y. G. Sharabian, J. Shaw, S. M. Shuvalov, A. Skabelin, T. Smith, C. Smith, E. S. Smith, D. I. Sober, M. Spraker, S. Stepanyan, P. Stoler, M. Taiuti, S. Taylor, D. Tedeschi, T. Y. Tung, M. F. Vineyard, A. Vlassov, H. Weller, L. B. Weinstein, R. Welsh, D. P. Weygand, S. Whisnant, M. Witkowski, E. Wolin, A. Yegneswaran, J. Yun, Z. Zhou, J. Zhao

Research output: Contribution to journalArticle

114 Citations (Scopus)

Abstract

New cross sections for the reaction ep → epη are reported for total center of mass energy W = 1.5-1.86 GeV and invariant momentum transfer Q2 = 0.25-1.5 (GeV/c)2. This large kinematic range allows extraction of important new information about response functions, photocouplings, and ηN coupling strengths of baryon resonances. Newly observed structure at W ∼ 1.65 GeV is shown to come from interference between S and P waves and can be interpreted with known resonances. Improved values are derived for the photon coupling amplitude for the S11 (1535) resonance.

Original languageEnglish (US)
Pages (from-to)1702-1706
Number of pages5
JournalPhysical Review Letters
Volume86
Issue number9
DOIs
StatePublished - Feb 26 2001

Fingerprint

baryon resonance
P waves
S waves
momentum transfer
center of mass
kinematics
interference
cross sections
photons
energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Thompson, R., Dytman, S., Kim, K. Y., Mueller, J., Adams, G. S., Amaryan, M. J., ... Zhao, J. (2001). The ep → e′pη reaction at and above the S11 (1535) baryon resonance. Physical Review Letters, 86(9), 1702-1706. https://doi.org/10.1103/PhysRevLett.86.1702

The ep → e′pη reaction at and above the S11 (1535) baryon resonance. / Thompson, R.; Dytman, S.; Kim, K. Y.; Mueller, J.; Adams, G. S.; Amaryan, M. J.; Anciant, E.; Anghinolfi, M.; Asavapibhop, B.; Auger, T.; Audit, G.; Avakian, H.; Barrow, S.; Battaglieri, M.; Beard, K.; Bektasoglu, M.; Bertozzi, W.; Bianchi, N.; Biselli, A.; Boiarinov, S.; Bonner, B. E.; Briscoe, W. J.; Brooks, W.; Burkert, V. D.; Calarco, J. R.; Capitani, G.; Carman, D. S.; Carnahan, B.; Cole, P. L.; Coleman, A.; Connelly, J.; Cords, D.; Corvisiero, P.; Crabb, D.; Crannell, H.; Cummings, J.; Day, D.; Degtyarenko, P. V.; Demirchyan, R. A.; Dennis, L. C.; Deppman, A.; De Sanctis, E.; De Vita, R.; Dhuga, K. S.; Djalali, C.; Dodge, G. E.; Doughty, D.; Dragovitsch, P.; Dugger, Michael; Eckhause, M.; Efremenko, Y. V.; Egiyan, H.; Egiyan, K. S.; Elouadrhiri, E.; Farhi, L.; Feuerbach, R. J.; Ficenec, J.; Fissum, K.; Freyberger, A.; Funsten, H.; Gai, M.; Gavrilov, V. B.; Gilfoyle, G. P.; Giovanetti, K.; Gilad, S.; Girard, P.; Griffioen, K. A.; Guidal, M.; Guillo, M.; Gyurjyan, V.; Hancock, D.; Hardie, J.; Heddle, D.; Heisenberg, J.; Hersman, F. W.; Hicks, K.; Hicks, R. S.; Holtrop, M.; Hyde-Wright, C. E.; Ito, M. M.; Jenkins, D.; Joo, K.; Kane, J.; Khandaker, M.; Kim, W.; Klein, A.; Klein, F. J.; Klusman, M.; Kossov, M.; Kuhn, S. E.; Kuang, Y.; Laget, J. M.; Lawrence, D.; Leskin, G. A.; Longhi, A.; Loukachine, K.; Lucas, M.; Magahiz, R.; Major, R. W.; Manak, J. J.; Marchand, C.; Matthews, S. K.; McAleer, S.; McCarthy, J.; McNabb, J. W C; Mecking, B. A.; Mestayer, M. D.; Meyer, C. A.; Minehart, R.; Mirazita, M.; Miskimen, R.; Muccifora, V.; Mutchler, G. S.; Napolitano, J.; Niyazov, R. A.; Ohandjanyan, M. S.; O'Brien, J. T.; Opper, A.; Patois, Y.; Peterson, G. A.; Philips, S.; Pivnyuk, N.; Pocanic, D.; Pogorelko, O.; Polli, E.; Preedom, B. M.; Price, J. W.; Qin, E. M.; Raue, B. A.; Reolon, A. R.; Riccardi, G.; Ricco, G.; Ripani, M.; Ritchie, Barry; Ronchetti, F.; Rossi, P.; Roudot, F.; Rowntree, D.; Rubin, P. D.; Salgado, C. W.; Sanzone, M.; Sapunenko, V.; Sarty, A.; Sargsyan, M.; Schumacher, R. A.; Shafi, A.; Sharabian, Y. G.; Shaw, J.; Shuvalov, S. M.; Skabelin, A.; Smith, T.; Smith, C.; Smith, E. S.; Sober, D. I.; Spraker, M.; Stepanyan, S.; Stoler, P.; Taiuti, M.; Taylor, S.; Tedeschi, D.; Tung, T. Y.; Vineyard, M. F.; Vlassov, A.; Weller, H.; Weinstein, L. B.; Welsh, R.; Weygand, D. P.; Whisnant, S.; Witkowski, M.; Wolin, E.; Yegneswaran, A.; Yun, J.; Zhou, Z.; Zhao, J.

In: Physical Review Letters, Vol. 86, No. 9, 26.02.2001, p. 1702-1706.

Research output: Contribution to journalArticle

Thompson, R, Dytman, S, Kim, KY, Mueller, J, Adams, GS, Amaryan, MJ, Anciant, E, Anghinolfi, M, Asavapibhop, B, Auger, T, Audit, G, Avakian, H, Barrow, S, Battaglieri, M, Beard, K, Bektasoglu, M, Bertozzi, W, Bianchi, N, Biselli, A, Boiarinov, S, Bonner, BE, Briscoe, WJ, Brooks, W, Burkert, VD, Calarco, JR, Capitani, G, Carman, DS, Carnahan, B, Cole, PL, Coleman, A, Connelly, J, Cords, D, Corvisiero, P, Crabb, D, Crannell, H, Cummings, J, Day, D, Degtyarenko, PV, Demirchyan, RA, Dennis, LC, Deppman, A, De Sanctis, E, De Vita, R, Dhuga, KS, Djalali, C, Dodge, GE, Doughty, D, Dragovitsch, P, Dugger, M, Eckhause, M, Efremenko, YV, Egiyan, H, Egiyan, KS, Elouadrhiri, E, Farhi, L, Feuerbach, RJ, Ficenec, J, Fissum, K, Freyberger, A, Funsten, H, Gai, M, Gavrilov, VB, Gilfoyle, GP, Giovanetti, K, Gilad, S, Girard, P, Griffioen, KA, Guidal, M, Guillo, M, Gyurjyan, V, Hancock, D, Hardie, J, Heddle, D, Heisenberg, J, Hersman, FW, Hicks, K, Hicks, RS, Holtrop, M, Hyde-Wright, CE, Ito, MM, Jenkins, D, Joo, K, Kane, J, Khandaker, M, Kim, W, Klein, A, Klein, FJ, Klusman, M, Kossov, M, Kuhn, SE, Kuang, Y, Laget, JM, Lawrence, D, Leskin, GA, Longhi, A, Loukachine, K, Lucas, M, Magahiz, R, Major, RW, Manak, JJ, Marchand, C, Matthews, SK, McAleer, S, McCarthy, J, McNabb, JWC, Mecking, BA, Mestayer, MD, Meyer, CA, Minehart, R, Mirazita, M, Miskimen, R, Muccifora, V, Mutchler, GS, Napolitano, J, Niyazov, RA, Ohandjanyan, MS, O'Brien, JT, Opper, A, Patois, Y, Peterson, GA, Philips, S, Pivnyuk, N, Pocanic, D, Pogorelko, O, Polli, E, Preedom, BM, Price, JW, Qin, EM, Raue, BA, Reolon, AR, Riccardi, G, Ricco, G, Ripani, M, Ritchie, B, Ronchetti, F, Rossi, P, Roudot, F, Rowntree, D, Rubin, PD, Salgado, CW, Sanzone, M, Sapunenko, V, Sarty, A, Sargsyan, M, Schumacher, RA, Shafi, A, Sharabian, YG, Shaw, J, Shuvalov, SM, Skabelin, A, Smith, T, Smith, C, Smith, ES, Sober, DI, Spraker, M, Stepanyan, S, Stoler, P, Taiuti, M, Taylor, S, Tedeschi, D, Tung, TY, Vineyard, MF, Vlassov, A, Weller, H, Weinstein, LB, Welsh, R, Weygand, DP, Whisnant, S, Witkowski, M, Wolin, E, Yegneswaran, A, Yun, J, Zhou, Z & Zhao, J 2001, 'The ep → e′pη reaction at and above the S11 (1535) baryon resonance', Physical Review Letters, vol. 86, no. 9, pp. 1702-1706. https://doi.org/10.1103/PhysRevLett.86.1702
Thompson R, Dytman S, Kim KY, Mueller J, Adams GS, Amaryan MJ et al. The ep → e′pη reaction at and above the S11 (1535) baryon resonance. Physical Review Letters. 2001 Feb 26;86(9):1702-1706. https://doi.org/10.1103/PhysRevLett.86.1702
Thompson, R. ; Dytman, S. ; Kim, K. Y. ; Mueller, J. ; Adams, G. S. ; Amaryan, M. J. ; Anciant, E. ; Anghinolfi, M. ; Asavapibhop, B. ; Auger, T. ; Audit, G. ; Avakian, H. ; Barrow, S. ; Battaglieri, M. ; Beard, K. ; Bektasoglu, M. ; Bertozzi, W. ; Bianchi, N. ; Biselli, A. ; Boiarinov, S. ; Bonner, B. E. ; Briscoe, W. J. ; Brooks, W. ; Burkert, V. D. ; Calarco, J. R. ; Capitani, G. ; Carman, D. S. ; Carnahan, B. ; Cole, P. L. ; Coleman, A. ; Connelly, J. ; Cords, D. ; Corvisiero, P. ; Crabb, D. ; Crannell, H. ; Cummings, J. ; Day, D. ; Degtyarenko, P. V. ; Demirchyan, R. A. ; Dennis, L. C. ; Deppman, A. ; De Sanctis, E. ; De Vita, R. ; Dhuga, K. S. ; Djalali, C. ; Dodge, G. E. ; Doughty, D. ; Dragovitsch, P. ; Dugger, Michael ; Eckhause, M. ; Efremenko, Y. V. ; Egiyan, H. ; Egiyan, K. S. ; Elouadrhiri, E. ; Farhi, L. ; Feuerbach, R. J. ; Ficenec, J. ; Fissum, K. ; Freyberger, A. ; Funsten, H. ; Gai, M. ; Gavrilov, V. B. ; Gilfoyle, G. P. ; Giovanetti, K. ; Gilad, S. ; Girard, P. ; Griffioen, K. A. ; Guidal, M. ; Guillo, M. ; Gyurjyan, V. ; Hancock, D. ; Hardie, J. ; Heddle, D. ; Heisenberg, J. ; Hersman, F. W. ; Hicks, K. ; Hicks, R. S. ; Holtrop, M. ; Hyde-Wright, C. E. ; Ito, M. M. ; Jenkins, D. ; Joo, K. ; Kane, J. ; Khandaker, M. ; Kim, W. ; Klein, A. ; Klein, F. J. ; Klusman, M. ; Kossov, M. ; Kuhn, S. E. ; Kuang, Y. ; Laget, J. M. ; Lawrence, D. ; Leskin, G. A. ; Longhi, A. ; Loukachine, K. ; Lucas, M. ; Magahiz, R. ; Major, R. W. ; Manak, J. J. ; Marchand, C. ; Matthews, S. K. ; McAleer, S. ; McCarthy, J. ; McNabb, J. W C ; Mecking, B. A. ; Mestayer, M. D. ; Meyer, C. A. ; Minehart, R. ; Mirazita, M. ; Miskimen, R. ; Muccifora, V. ; Mutchler, G. S. ; Napolitano, J. ; Niyazov, R. A. ; Ohandjanyan, M. S. ; O'Brien, J. T. ; Opper, A. ; Patois, Y. ; Peterson, G. A. ; Philips, S. ; Pivnyuk, N. ; Pocanic, D. ; Pogorelko, O. ; Polli, E. ; Preedom, B. M. ; Price, J. W. ; Qin, E. M. ; Raue, B. A. ; Reolon, A. R. ; Riccardi, G. ; Ricco, G. ; Ripani, M. ; Ritchie, Barry ; Ronchetti, F. ; Rossi, P. ; Roudot, F. ; Rowntree, D. ; Rubin, P. D. ; Salgado, C. W. ; Sanzone, M. ; Sapunenko, V. ; Sarty, A. ; Sargsyan, M. ; Schumacher, R. A. ; Shafi, A. ; Sharabian, Y. G. ; Shaw, J. ; Shuvalov, S. M. ; Skabelin, A. ; Smith, T. ; Smith, C. ; Smith, E. S. ; Sober, D. I. ; Spraker, M. ; Stepanyan, S. ; Stoler, P. ; Taiuti, M. ; Taylor, S. ; Tedeschi, D. ; Tung, T. Y. ; Vineyard, M. F. ; Vlassov, A. ; Weller, H. ; Weinstein, L. B. ; Welsh, R. ; Weygand, D. P. ; Whisnant, S. ; Witkowski, M. ; Wolin, E. ; Yegneswaran, A. ; Yun, J. ; Zhou, Z. ; Zhao, J. / The ep → e′pη reaction at and above the S11 (1535) baryon resonance. In: Physical Review Letters. 2001 ; Vol. 86, No. 9. pp. 1702-1706.
@article{a6516eb810d7482aa111f5cbfb75848c,
title = "The ep → e′pη reaction at and above the S11 (1535) baryon resonance",
abstract = "New cross sections for the reaction ep → epη are reported for total center of mass energy W = 1.5-1.86 GeV and invariant momentum transfer Q2 = 0.25-1.5 (GeV/c)2. This large kinematic range allows extraction of important new information about response functions, photocouplings, and ηN coupling strengths of baryon resonances. Newly observed structure at W ∼ 1.65 GeV is shown to come from interference between S and P waves and can be interpreted with known resonances. Improved values are derived for the photon coupling amplitude for the S11 (1535) resonance.",
author = "R. Thompson and S. Dytman and Kim, {K. Y.} and J. Mueller and Adams, {G. S.} and Amaryan, {M. J.} and E. Anciant and M. Anghinolfi and B. Asavapibhop and T. Auger and G. Audit and H. Avakian and S. Barrow and M. Battaglieri and K. Beard and M. Bektasoglu and W. Bertozzi and N. Bianchi and A. Biselli and S. Boiarinov and Bonner, {B. E.} and Briscoe, {W. J.} and W. Brooks and Burkert, {V. D.} and Calarco, {J. R.} and G. Capitani and Carman, {D. S.} and B. Carnahan and Cole, {P. L.} and A. Coleman and J. Connelly and D. Cords and P. Corvisiero and D. Crabb and H. Crannell and J. Cummings and D. Day and Degtyarenko, {P. V.} and Demirchyan, {R. A.} and Dennis, {L. C.} and A. Deppman and {De Sanctis}, E. and {De Vita}, R. and Dhuga, {K. S.} and C. Djalali and Dodge, {G. E.} and D. Doughty and P. Dragovitsch and Michael Dugger and M. Eckhause and Efremenko, {Y. V.} and H. Egiyan and Egiyan, {K. S.} and E. Elouadrhiri and L. Farhi and Feuerbach, {R. J.} and J. Ficenec and K. Fissum and A. Freyberger and H. Funsten and M. Gai and Gavrilov, {V. B.} and Gilfoyle, {G. P.} and K. Giovanetti and S. Gilad and P. Girard and Griffioen, {K. A.} and M. Guidal and M. Guillo and V. Gyurjyan and D. Hancock and J. Hardie and D. Heddle and J. Heisenberg and Hersman, {F. W.} and K. Hicks and Hicks, {R. S.} and M. Holtrop and Hyde-Wright, {C. E.} and Ito, {M. M.} and D. Jenkins and K. Joo and J. Kane and M. Khandaker and W. Kim and A. Klein and Klein, {F. J.} and M. Klusman and M. Kossov and Kuhn, {S. E.} and Y. Kuang and Laget, {J. M.} and D. Lawrence and Leskin, {G. A.} and A. Longhi and K. Loukachine and M. Lucas and R. Magahiz and Major, {R. W.} and Manak, {J. J.} and C. Marchand and Matthews, {S. K.} and S. McAleer and J. McCarthy and McNabb, {J. W C} and Mecking, {B. A.} and Mestayer, {M. D.} and Meyer, {C. A.} and R. Minehart and M. Mirazita and R. Miskimen and V. Muccifora and Mutchler, {G. S.} and J. Napolitano and Niyazov, {R. A.} and Ohandjanyan, {M. S.} and O'Brien, {J. T.} and A. Opper and Y. Patois and Peterson, {G. A.} and S. Philips and N. Pivnyuk and D. Pocanic and O. Pogorelko and E. Polli and Preedom, {B. M.} and Price, {J. W.} and Qin, {E. M.} and Raue, {B. A.} and Reolon, {A. R.} and G. Riccardi and G. Ricco and M. Ripani and Barry Ritchie and F. Ronchetti and P. Rossi and F. Roudot and D. Rowntree and Rubin, {P. D.} and Salgado, {C. W.} and M. Sanzone and V. Sapunenko and A. Sarty and M. Sargsyan and Schumacher, {R. A.} and A. Shafi and Sharabian, {Y. G.} and J. Shaw and Shuvalov, {S. M.} and A. Skabelin and T. Smith and C. Smith and Smith, {E. S.} and Sober, {D. I.} and M. Spraker and S. Stepanyan and P. Stoler and M. Taiuti and S. Taylor and D. Tedeschi and Tung, {T. Y.} and Vineyard, {M. F.} and A. Vlassov and H. Weller and Weinstein, {L. B.} and R. Welsh and Weygand, {D. P.} and S. Whisnant and M. Witkowski and E. Wolin and A. Yegneswaran and J. Yun and Z. Zhou and J. Zhao",
year = "2001",
month = "2",
day = "26",
doi = "10.1103/PhysRevLett.86.1702",
language = "English (US)",
volume = "86",
pages = "1702--1706",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "9",

}

TY - JOUR

T1 - The ep → e′pη reaction at and above the S11 (1535) baryon resonance

AU - Thompson, R.

AU - Dytman, S.

AU - Kim, K. Y.

AU - Mueller, J.

AU - Adams, G. S.

AU - Amaryan, M. J.

AU - Anciant, E.

AU - Anghinolfi, M.

AU - Asavapibhop, B.

AU - Auger, T.

AU - Audit, G.

AU - Avakian, H.

AU - Barrow, S.

AU - Battaglieri, M.

AU - Beard, K.

AU - Bektasoglu, M.

AU - Bertozzi, W.

AU - Bianchi, N.

AU - Biselli, A.

AU - Boiarinov, S.

AU - Bonner, B. E.

AU - Briscoe, W. J.

AU - Brooks, W.

AU - Burkert, V. D.

AU - Calarco, J. R.

AU - Capitani, G.

AU - Carman, D. S.

AU - Carnahan, B.

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.

AU - Day, D.

AU - Degtyarenko, P. V.

AU - Demirchyan, R. A.

AU - Dennis, L. C.

AU - Deppman, A.

AU - De Sanctis, E.

AU - De Vita, R.

AU - Dhuga, K. S.

AU - Djalali, C.

AU - Dodge, G. E.

AU - Doughty, D.

AU - Dragovitsch, P.

AU - Dugger, Michael

AU - Eckhause, M.

AU - Efremenko, Y. V.

AU - Egiyan, H.

AU - Egiyan, K. S.

AU - Elouadrhiri, E.

AU - Farhi, L.

AU - Feuerbach, R. J.

AU - Ficenec, J.

AU - Fissum, K.

AU - Freyberger, A.

AU - Funsten, H.

AU - Gai, M.

AU - Gavrilov, V. B.

AU - Gilfoyle, G. P.

AU - Giovanetti, K.

AU - Gilad, S.

AU - Girard, P.

AU - Griffioen, K. A.

AU - Guidal, M.

AU - Guillo, M.

AU - Gyurjyan, V.

AU - Hancock, D.

AU - Hardie, J.

AU - Heddle, D.

AU - Heisenberg, J.

AU - Hersman, F. W.

AU - Hicks, K.

AU - Hicks, R. S.

AU - Holtrop, M.

AU - Hyde-Wright, C. E.

AU - Ito, M. M.

AU - Jenkins, D.

AU - Joo, K.

AU - Kane, J.

AU - Khandaker, M.

AU - Kim, W.

AU - Klein, A.

AU - Klein, F. J.

AU - Klusman, M.

AU - Kossov, M.

AU - Kuhn, S. E.

AU - Kuang, Y.

AU - Laget, J. M.

AU - Lawrence, D.

AU - Leskin, G. A.

AU - Longhi, A.

AU - Loukachine, K.

AU - Lucas, M.

AU - Magahiz, R.

AU - Major, R. W.

AU - Manak, J. J.

AU - Marchand, C.

AU - Matthews, S. K.

AU - McAleer, S.

AU - McCarthy, J.

AU - McNabb, J. W C

AU - Mecking, B. A.

AU - Mestayer, M. D.

AU - Meyer, C. A.

AU - Minehart, R.

AU - Mirazita, M.

AU - Miskimen, R.

AU - Muccifora, V.

AU - Mutchler, G. S.

AU - Napolitano, J.

AU - Niyazov, R. A.

AU - Ohandjanyan, M. S.

AU - O'Brien, J. T.

AU - Opper, A.

AU - Patois, Y.

AU - Peterson, G. A.

AU - Philips, S.

AU - Pivnyuk, N.

AU - Pocanic, D.

AU - Pogorelko, O.

AU - Polli, E.

AU - Preedom, B. M.

AU - Price, J. W.

AU - Qin, E. M.

AU - Raue, B. A.

AU - Reolon, A. R.

AU - Riccardi, G.

AU - Ricco, G.

AU - Ripani, M.

AU - Ritchie, Barry

AU - Ronchetti, F.

AU - Rossi, P.

AU - Roudot, F.

AU - Rowntree, D.

AU - Rubin, P. D.

AU - Salgado, C. W.

AU - Sanzone, M.

AU - Sapunenko, V.

AU - Sarty, A.

AU - Sargsyan, M.

AU - Schumacher, R. A.

AU - Shafi, A.

AU - Sharabian, Y. G.

AU - Shaw, J.

AU - Shuvalov, S. M.

AU - Skabelin, A.

AU - Smith, T.

AU - Smith, C.

AU - Smith, E. S.

AU - Sober, D. I.

AU - Spraker, M.

AU - Stepanyan, S.

AU - Stoler, P.

AU - Taiuti, M.

AU - Taylor, S.

AU - Tedeschi, D.

AU - Tung, T. Y.

AU - Vineyard, M. F.

AU - Vlassov, A.

AU - Weller, H.

AU - Weinstein, L. B.

AU - Welsh, R.

AU - Weygand, D. P.

AU - Whisnant, S.

AU - Witkowski, M.

AU - Wolin, E.

AU - Yegneswaran, A.

AU - Yun, J.

AU - Zhou, Z.

AU - Zhao, J.

PY - 2001/2/26

Y1 - 2001/2/26

N2 - New cross sections for the reaction ep → epη are reported for total center of mass energy W = 1.5-1.86 GeV and invariant momentum transfer Q2 = 0.25-1.5 (GeV/c)2. This large kinematic range allows extraction of important new information about response functions, photocouplings, and ηN coupling strengths of baryon resonances. Newly observed structure at W ∼ 1.65 GeV is shown to come from interference between S and P waves and can be interpreted with known resonances. Improved values are derived for the photon coupling amplitude for the S11 (1535) resonance.

AB - New cross sections for the reaction ep → epη are reported for total center of mass energy W = 1.5-1.86 GeV and invariant momentum transfer Q2 = 0.25-1.5 (GeV/c)2. This large kinematic range allows extraction of important new information about response functions, photocouplings, and ηN coupling strengths of baryon resonances. Newly observed structure at W ∼ 1.65 GeV is shown to come from interference between S and P waves and can be interpreted with known resonances. Improved values are derived for the photon coupling amplitude for the S11 (1535) resonance.

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U2 - 10.1103/PhysRevLett.86.1702

DO - 10.1103/PhysRevLett.86.1702

M3 - Article

AN - SCOPUS:4243935384

VL - 86

SP - 1702

EP - 1706

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 9

ER -