[Formula presented] Dependence of Quadrupole Strength in the [Formula presented] Transition

K. Joo, L. C. Smith, V. D. Burkert, R. Minehart, I. G. Aznauryan, L. Elouadrhiri, S. Stepanyan, G. S. Adams, M. J. Amaryan, E. Anciant, M. Anghinolfi, D. S. Armstrong, B. Asavapibhop, G. Audit, T. Auger, H. Avakian, S. Barrow, H. Bagdasaryan, M. Battaglieri, K. BeardM. Bektasoglu, W. Bertozzi, N. Bianchi, A. S. Biselli, S. Boiarinov, B. E. Bonner, W. K. Brooks, J. R. Calarco, G. P. Capitani, D. S. Carman, B. Carnahan, P. L. Cole, A. Coleman, D. Cords, P. Corvisiero, D. Crabb, H. Crannell, J. Cummings, E. De Sanctis, R. De Vita, P. V. Degtyarenko, R. A. Demirchyan, H. Denizli, L. C. Dennis, A. Deppman, K. V. Dharmawardane, K. S. Dhuga, C. Djalali, G. E. Dodge, D. Doughty, P. Dragovitsch, Michael Dugger, S. Dytman, M. Eckhause, Y. V. Efremenko, H. Egiyan, K. S. Egiyan, L. Farhi, R. J. Feuerbach, J. Ficenec, K. Fissum, T. A. Forest, H. Funsten, M. Gai, V. B. Gavrilov, S. Gilad, G. P. Gilfoyle, K. L. Giovanetti, 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, J. H. Kelley, M. Khandaker, K. Y. Kim, W. Kim, A. Klein, F. J. Klein, M. Klusman, M. Kossov, Y. Kuang, S. E. Kuhn, J. M. Laget, D. Lawrence, A. Longhi, K. Loukachine, M. Lucas, R. W. Major, J. J. Manak, C. Marchand, S. K. Matthews, S. McAleer, J. W.C. McNabb, B. A. Mecking, M. D. Mestayer, C. A. Meyer, M. Mirazita, R. Miskimen, V. Muccifora, J. Mueller, G. S. Mutchler, J. Napolitano, G. Niculescu, B. Niczyporuk, R. A. Niyazov, M. S. Ohandjanyan, A. Opper, Y. Patois, G. A. Peterson, S. Philips, N. Pivnyuk, D. Pocanic, O. Pogorelko, E. Polli, B. M. Preedom, J. W. Price, L. M. Qin, B. A. Raue, A. R. Reolon, G. Riccardi, G. Ricco, M. Ripani, Barry Ritchie, F. Ronchetti, P. Rossi, D. Rowntree, P. D. Rubin, C. W. Salgado, M. Sanzone, V. Sapunenko, M. Sargsyan, R. A. Schumacher, Y. G. Sharabian, J. Shaw, S. M. Shuvalov, A. Skabelin, E. S. Smith, T. Smith, D. I. Sober, M. Spraker, P. Stoler, M. Taiuti, S. Taylor, D. Tedeschi, R. Thompson, L. Todor, 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

3 Citations (Scopus)

Abstract

Models of baryon structure predict a small quadrupole deformation of the nucleon due to residual tensor forces between quarks or distortions from the pion cloud. Sensitivity to quark versus pion degrees of freedom occurs through the [Formula presented] dependence of the magnetic [Formula presented], electric [Formula presented], and scalar [Formula presented] multipoles in the [Formula presented] transition. We report new experimental values for the ratios [Formula presented] and [Formula presented] over the range [Formula presented], extracted from precision [Formula presented] data using a truncated multipole expansion. Results are best described by recent unitary models in which the pion cloud plays a dominant role.

Original languageEnglish (US)
Number of pages1
JournalPhysical Review Letters
Volume88
Issue number12
DOIs
StatePublished - Jan 1 2002

Fingerprint

quadrupoles
pions
multipoles
quarks
baryons
degrees of freedom
tensors
scalars
expansion
sensitivity

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Joo, K., Smith, L. C., Burkert, V. D., Minehart, R., Aznauryan, I. G., Elouadrhiri, L., ... Zhao, J. (2002). [Formula presented] Dependence of Quadrupole Strength in the [Formula presented] Transition. Physical Review Letters, 88(12). https://doi.org/10.1103/PhysRevLett.88.122001

[Formula presented] Dependence of Quadrupole Strength in the [Formula presented] Transition. / Joo, K.; Smith, L. C.; Burkert, V. D.; Minehart, R.; Aznauryan, I. G.; Elouadrhiri, L.; Stepanyan, S.; Adams, G. S.; Amaryan, M. J.; Anciant, E.; Anghinolfi, M.; Armstrong, D. S.; Asavapibhop, B.; Audit, G.; Auger, T.; Avakian, H.; Barrow, S.; Bagdasaryan, H.; Battaglieri, M.; Beard, K.; Bektasoglu, M.; Bertozzi, W.; Bianchi, N.; Biselli, A. S.; Boiarinov, S.; Bonner, B. E.; Brooks, W. K.; Calarco, J. R.; Capitani, G. P.; Carman, D. S.; Carnahan, B.; Cole, P. L.; Coleman, A.; Cords, D.; Corvisiero, P.; Crabb, D.; Crannell, H.; Cummings, J.; De Sanctis, E.; De Vita, R.; Degtyarenko, P. V.; Demirchyan, R. A.; Denizli, H.; Dennis, L. C.; Deppman, A.; Dharmawardane, K. V.; Dhuga, K. S.; Djalali, C.; Dodge, G. E.; Doughty, D.; Dragovitsch, P.; Dugger, Michael; Dytman, S.; Eckhause, M.; Efremenko, Y. V.; Egiyan, H.; Egiyan, K. S.; Farhi, L.; Feuerbach, R. J.; Ficenec, J.; Fissum, K.; Forest, T. A.; Funsten, H.; Gai, M.; Gavrilov, V. B.; Gilad, S.; Gilfoyle, G. P.; Giovanetti, K. L.; 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.; Kelley, J. H.; Khandaker, M.; Kim, K. Y.; Kim, W.; Klein, A.; Klein, F. J.; Klusman, M.; Kossov, M.; Kuang, Y.; Kuhn, S. E.; Laget, J. M.; Lawrence, D.; Longhi, A.; Loukachine, K.; Lucas, M.; Major, R. W.; Manak, J. J.; Marchand, C.; Matthews, S. K.; McAleer, S.; McNabb, J. W.C.; Mecking, B. A.; Mestayer, M. D.; Meyer, C. A.; Mirazita, M.; Miskimen, R.; Muccifora, V.; Mueller, J.; Mutchler, G. S.; Napolitano, J.; Niculescu, G.; Niczyporuk, B.; Niyazov, R. A.; Ohandjanyan, M. S.; Opper, A.; Patois, Y.; Peterson, G. A.; Philips, S.; Pivnyuk, N.; Pocanic, D.; Pogorelko, O.; Polli, E.; Preedom, B. M.; Price, J. W.; Qin, L. M.; Raue, B. A.; Reolon, A. R.; Riccardi, G.; Ricco, G.; Ripani, M.; Ritchie, Barry; Ronchetti, F.; Rossi, P.; Rowntree, D.; Rubin, P. D.; Salgado, C. W.; Sanzone, M.; Sapunenko, V.; Sargsyan, M.; Schumacher, R. A.; Sharabian, Y. G.; Shaw, J.; Shuvalov, S. M.; Skabelin, A.; Smith, E. S.; Smith, T.; Sober, D. I.; Spraker, M.; Stoler, P.; Taiuti, M.; Taylor, S.; Tedeschi, D.; Thompson, R.; Todor, L.; 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. 88, No. 12, 01.01.2002.

Research output: Contribution to journalArticle

Joo, K, Smith, LC, Burkert, VD, Minehart, R, Aznauryan, IG, Elouadrhiri, L, Stepanyan, S, Adams, GS, Amaryan, MJ, Anciant, E, Anghinolfi, M, Armstrong, DS, Asavapibhop, B, Audit, G, Auger, T, Avakian, H, Barrow, S, Bagdasaryan, H, Battaglieri, M, Beard, K, Bektasoglu, M, Bertozzi, W, Bianchi, N, Biselli, AS, Boiarinov, S, Bonner, BE, Brooks, WK, Calarco, JR, Capitani, GP, Carman, DS, Carnahan, B, Cole, PL, Coleman, A, Cords, D, Corvisiero, P, Crabb, D, Crannell, H, Cummings, J, De Sanctis, E, De Vita, R, Degtyarenko, PV, Demirchyan, RA, Denizli, H, Dennis, LC, Deppman, A, Dharmawardane, KV, Dhuga, KS, Djalali, C, Dodge, GE, Doughty, D, Dragovitsch, P, Dugger, M, Dytman, S, Eckhause, M, Efremenko, YV, Egiyan, H, Egiyan, KS, Farhi, L, Feuerbach, RJ, Ficenec, J, Fissum, K, Forest, TA, Funsten, H, Gai, M, Gavrilov, VB, Gilad, S, Gilfoyle, GP, Giovanetti, KL, 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, Kelley, JH, Khandaker, M, Kim, KY, Kim, W, Klein, A, Klein, FJ, Klusman, M, Kossov, M, Kuang, Y, Kuhn, SE, Laget, JM, Lawrence, D, Longhi, A, Loukachine, K, Lucas, M, Major, RW, Manak, JJ, Marchand, C, Matthews, SK, McAleer, S, McNabb, JWC, Mecking, BA, Mestayer, MD, Meyer, CA, Mirazita, M, Miskimen, R, Muccifora, V, Mueller, J, Mutchler, GS, Napolitano, J, Niculescu, G, Niczyporuk, B, Niyazov, RA, Ohandjanyan, MS, Opper, A, Patois, Y, Peterson, GA, Philips, S, Pivnyuk, N, Pocanic, D, Pogorelko, O, Polli, E, Preedom, BM, Price, JW, Qin, LM, Raue, BA, Reolon, AR, Riccardi, G, Ricco, G, Ripani, M, Ritchie, B, Ronchetti, F, Rossi, P, Rowntree, D, Rubin, PD, Salgado, CW, Sanzone, M, Sapunenko, V, Sargsyan, M, Schumacher, RA, Sharabian, YG, Shaw, J, Shuvalov, SM, Skabelin, A, Smith, ES, Smith, T, Sober, DI, Spraker, M, Stoler, P, Taiuti, M, Taylor, S, Tedeschi, D, Thompson, R, Todor, L, 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 2002, '[Formula presented] Dependence of Quadrupole Strength in the [Formula presented] Transition', Physical Review Letters, vol. 88, no. 12. https://doi.org/10.1103/PhysRevLett.88.122001
Joo, K. ; Smith, L. C. ; Burkert, V. D. ; Minehart, R. ; Aznauryan, I. G. ; Elouadrhiri, L. ; Stepanyan, S. ; Adams, G. S. ; Amaryan, M. J. ; Anciant, E. ; Anghinolfi, M. ; Armstrong, D. S. ; Asavapibhop, B. ; Audit, G. ; Auger, T. ; Avakian, H. ; Barrow, S. ; Bagdasaryan, H. ; Battaglieri, M. ; Beard, K. ; Bektasoglu, M. ; Bertozzi, W. ; Bianchi, N. ; Biselli, A. S. ; Boiarinov, S. ; Bonner, B. E. ; Brooks, W. K. ; Calarco, J. R. ; Capitani, G. P. ; Carman, D. S. ; Carnahan, B. ; Cole, P. L. ; Coleman, A. ; Cords, D. ; Corvisiero, P. ; Crabb, D. ; Crannell, H. ; Cummings, J. ; De Sanctis, E. ; De Vita, R. ; Degtyarenko, P. V. ; Demirchyan, R. A. ; Denizli, H. ; Dennis, L. C. ; Deppman, A. ; Dharmawardane, K. V. ; Dhuga, K. S. ; Djalali, C. ; Dodge, G. E. ; Doughty, D. ; Dragovitsch, P. ; Dugger, Michael ; Dytman, S. ; Eckhause, M. ; Efremenko, Y. V. ; Egiyan, H. ; Egiyan, K. S. ; Farhi, L. ; Feuerbach, R. J. ; Ficenec, J. ; Fissum, K. ; Forest, T. A. ; Funsten, H. ; Gai, M. ; Gavrilov, V. B. ; Gilad, S. ; Gilfoyle, G. P. ; Giovanetti, K. L. ; 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. ; Kelley, J. H. ; Khandaker, M. ; Kim, K. Y. ; Kim, W. ; Klein, A. ; Klein, F. J. ; Klusman, M. ; Kossov, M. ; Kuang, Y. ; Kuhn, S. E. ; Laget, J. M. ; Lawrence, D. ; Longhi, A. ; Loukachine, K. ; Lucas, M. ; Major, R. W. ; Manak, J. J. ; Marchand, C. ; Matthews, S. K. ; McAleer, S. ; McNabb, J. W.C. ; Mecking, B. A. ; Mestayer, M. D. ; Meyer, C. A. ; Mirazita, M. ; Miskimen, R. ; Muccifora, V. ; Mueller, J. ; Mutchler, G. S. ; Napolitano, J. ; Niculescu, G. ; Niczyporuk, B. ; Niyazov, R. A. ; Ohandjanyan, M. S. ; Opper, A. ; Patois, Y. ; Peterson, G. A. ; Philips, S. ; Pivnyuk, N. ; Pocanic, D. ; Pogorelko, O. ; Polli, E. ; Preedom, B. M. ; Price, J. W. ; Qin, L. M. ; Raue, B. A. ; Reolon, A. R. ; Riccardi, G. ; Ricco, G. ; Ripani, M. ; Ritchie, Barry ; Ronchetti, F. ; Rossi, P. ; Rowntree, D. ; Rubin, P. D. ; Salgado, C. W. ; Sanzone, M. ; Sapunenko, V. ; Sargsyan, M. ; Schumacher, R. A. ; Sharabian, Y. G. ; Shaw, J. ; Shuvalov, S. M. ; Skabelin, A. ; Smith, E. S. ; Smith, T. ; Sober, D. I. ; Spraker, M. ; Stoler, P. ; Taiuti, M. ; Taylor, S. ; Tedeschi, D. ; Thompson, R. ; Todor, L. ; 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. / [Formula presented] Dependence of Quadrupole Strength in the [Formula presented] Transition. In: Physical Review Letters. 2002 ; Vol. 88, No. 12.
@article{a8c60ab6530f43978adad2d79d591999,
title = "[Formula presented] Dependence of Quadrupole Strength in the [Formula presented] Transition",
abstract = "Models of baryon structure predict a small quadrupole deformation of the nucleon due to residual tensor forces between quarks or distortions from the pion cloud. Sensitivity to quark versus pion degrees of freedom occurs through the [Formula presented] dependence of the magnetic [Formula presented], electric [Formula presented], and scalar [Formula presented] multipoles in the [Formula presented] transition. We report new experimental values for the ratios [Formula presented] and [Formula presented] over the range [Formula presented], extracted from precision [Formula presented] data using a truncated multipole expansion. Results are best described by recent unitary models in which the pion cloud plays a dominant role.",
author = "K. Joo and Smith, {L. C.} and Burkert, {V. D.} and R. Minehart and Aznauryan, {I. G.} and L. Elouadrhiri and S. Stepanyan and Adams, {G. S.} and Amaryan, {M. J.} and E. Anciant and M. Anghinolfi and Armstrong, {D. S.} and B. Asavapibhop and G. Audit and T. Auger and H. Avakian and S. Barrow and H. Bagdasaryan and M. Battaglieri and K. Beard and M. Bektasoglu and W. Bertozzi and N. Bianchi and Biselli, {A. S.} and S. Boiarinov and Bonner, {B. E.} and Brooks, {W. K.} and Calarco, {J. R.} and Capitani, {G. P.} and Carman, {D. S.} and B. Carnahan and Cole, {P. L.} and A. Coleman and D. Cords and P. Corvisiero and D. Crabb and H. Crannell and J. Cummings and {De Sanctis}, E. and {De Vita}, R. and Degtyarenko, {P. V.} and Demirchyan, {R. A.} and H. Denizli and Dennis, {L. C.} and A. Deppman and Dharmawardane, {K. V.} and Dhuga, {K. S.} and C. Djalali and Dodge, {G. E.} and D. Doughty and P. Dragovitsch and Michael Dugger and S. Dytman and M. Eckhause and Efremenko, {Y. V.} and H. Egiyan and Egiyan, {K. S.} and L. Farhi and Feuerbach, {R. J.} and J. Ficenec and K. Fissum and Forest, {T. A.} and H. Funsten and M. Gai and Gavrilov, {V. B.} and S. Gilad and Gilfoyle, {G. P.} and Giovanetti, {K. L.} 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 Kelley, {J. H.} and M. Khandaker and Kim, {K. Y.} and W. Kim and A. Klein and Klein, {F. J.} and M. Klusman and M. Kossov and Y. Kuang and Kuhn, {S. E.} and Laget, {J. M.} and D. Lawrence and A. Longhi and K. Loukachine and M. Lucas and Major, {R. W.} and Manak, {J. J.} and C. Marchand and Matthews, {S. K.} and S. McAleer and McNabb, {J. W.C.} and Mecking, {B. A.} and Mestayer, {M. D.} and Meyer, {C. A.} and M. Mirazita and R. Miskimen and V. Muccifora and J. Mueller and Mutchler, {G. S.} and J. Napolitano and G. Niculescu and B. Niczyporuk and Niyazov, {R. A.} and Ohandjanyan, {M. S.} 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, {L. 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 D. Rowntree and Rubin, {P. D.} and Salgado, {C. W.} and M. Sanzone and V. Sapunenko and M. Sargsyan and Schumacher, {R. A.} and Sharabian, {Y. G.} and J. Shaw and Shuvalov, {S. M.} and A. Skabelin and Smith, {E. S.} and T. Smith and Sober, {D. I.} and M. Spraker and P. Stoler and M. Taiuti and S. Taylor and D. Tedeschi and R. Thompson and L. Todor 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 = "2002",
month = "1",
day = "1",
doi = "10.1103/PhysRevLett.88.122001",
language = "English (US)",
volume = "88",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "12",

}

TY - JOUR

T1 - [Formula presented] Dependence of Quadrupole Strength in the [Formula presented] Transition

AU - Joo, K.

AU - Smith, L. C.

AU - Burkert, V. D.

AU - Minehart, R.

AU - Aznauryan, I. G.

AU - Elouadrhiri, L.

AU - Stepanyan, S.

AU - Adams, G. S.

AU - Amaryan, M. J.

AU - Anciant, E.

AU - Anghinolfi, M.

AU - Armstrong, D. S.

AU - Asavapibhop, B.

AU - Audit, G.

AU - Auger, T.

AU - Avakian, H.

AU - Barrow, S.

AU - Bagdasaryan, H.

AU - Battaglieri, M.

AU - Beard, K.

AU - Bektasoglu, M.

AU - Bertozzi, W.

AU - Bianchi, N.

AU - Biselli, A. S.

AU - Boiarinov, S.

AU - Bonner, B. E.

AU - Brooks, W. K.

AU - Calarco, J. R.

AU - Capitani, G. P.

AU - Carman, D. S.

AU - Carnahan, B.

AU - Cole, P. L.

AU - Coleman, A.

AU - Cords, D.

AU - Corvisiero, P.

AU - Crabb, D.

AU - Crannell, H.

AU - Cummings, J.

AU - De Sanctis, E.

AU - De Vita, R.

AU - Degtyarenko, P. V.

AU - Demirchyan, R. A.

AU - Denizli, H.

AU - Dennis, L. C.

AU - Deppman, A.

AU - Dharmawardane, K. V.

AU - Dhuga, K. S.

AU - Djalali, C.

AU - Dodge, G. E.

AU - Doughty, D.

AU - Dragovitsch, P.

AU - Dugger, Michael

AU - Dytman, S.

AU - Eckhause, M.

AU - Efremenko, Y. V.

AU - Egiyan, H.

AU - Egiyan, K. S.

AU - Farhi, L.

AU - Feuerbach, R. J.

AU - Ficenec, J.

AU - Fissum, K.

AU - Forest, T. A.

AU - Funsten, H.

AU - Gai, M.

AU - Gavrilov, V. B.

AU - Gilad, S.

AU - Gilfoyle, G. P.

AU - Giovanetti, K. L.

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 - Kelley, J. H.

AU - Khandaker, M.

AU - Kim, K. Y.

AU - Kim, W.

AU - Klein, A.

AU - Klein, F. J.

AU - Klusman, M.

AU - Kossov, M.

AU - Kuang, Y.

AU - Kuhn, S. E.

AU - Laget, J. M.

AU - Lawrence, D.

AU - Longhi, A.

AU - Loukachine, K.

AU - Lucas, M.

AU - Major, R. W.

AU - Manak, J. J.

AU - Marchand, C.

AU - Matthews, S. K.

AU - McAleer, S.

AU - McNabb, J. W.C.

AU - Mecking, B. A.

AU - Mestayer, M. D.

AU - Meyer, C. A.

AU - Mirazita, M.

AU - Miskimen, R.

AU - Muccifora, V.

AU - Mueller, J.

AU - Mutchler, G. S.

AU - Napolitano, J.

AU - Niculescu, G.

AU - Niczyporuk, B.

AU - Niyazov, R. A.

AU - Ohandjanyan, M. S.

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, L. 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 - Rowntree, D.

AU - Rubin, P. D.

AU - Salgado, C. W.

AU - Sanzone, M.

AU - Sapunenko, V.

AU - Sargsyan, M.

AU - Schumacher, R. A.

AU - Sharabian, Y. G.

AU - Shaw, J.

AU - Shuvalov, S. M.

AU - Skabelin, A.

AU - Smith, E. S.

AU - Smith, T.

AU - Sober, D. I.

AU - Spraker, M.

AU - Stoler, P.

AU - Taiuti, M.

AU - Taylor, S.

AU - Tedeschi, D.

AU - Thompson, R.

AU - Todor, L.

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 - 2002/1/1

Y1 - 2002/1/1

N2 - Models of baryon structure predict a small quadrupole deformation of the nucleon due to residual tensor forces between quarks or distortions from the pion cloud. Sensitivity to quark versus pion degrees of freedom occurs through the [Formula presented] dependence of the magnetic [Formula presented], electric [Formula presented], and scalar [Formula presented] multipoles in the [Formula presented] transition. We report new experimental values for the ratios [Formula presented] and [Formula presented] over the range [Formula presented], extracted from precision [Formula presented] data using a truncated multipole expansion. Results are best described by recent unitary models in which the pion cloud plays a dominant role.

AB - Models of baryon structure predict a small quadrupole deformation of the nucleon due to residual tensor forces between quarks or distortions from the pion cloud. Sensitivity to quark versus pion degrees of freedom occurs through the [Formula presented] dependence of the magnetic [Formula presented], electric [Formula presented], and scalar [Formula presented] multipoles in the [Formula presented] transition. We report new experimental values for the ratios [Formula presented] and [Formula presented] over the range [Formula presented], extracted from precision [Formula presented] data using a truncated multipole expansion. Results are best described by recent unitary models in which the pion cloud plays a dominant role.

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U2 - 10.1103/PhysRevLett.88.122001

DO - 10.1103/PhysRevLett.88.122001

M3 - Article

AN - SCOPUS:85038318780

VL - 88

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 12

ER -