Electroexcitation of the Δ+(1232) at low momentum transfer

A. Blomberg; D. Anez; N. Sparveris; A. J. Sarty; M. Paolone; S. Gilad; D. Higinbotham; Z. Ahmed; H. Albataineh; K. Allada; B. Anderson; K. Aniol; J. Annand; J. Arrington; T. Averett; H. Baghdasaryan; X. Bai; A. Beck; S. Beck; V. Bellini; F. Benmokhtar; W. Boeglin; C. M. Camacho; A. Camsonne; C. Chen; J. P. Chen; K. Chirapatpimol; E. Cisbani; M. Dalton; W. Deconinck; M. Defurne; R. De Leo; D. Flay; N. Fomin; M. Friend; S. Frullani; E. Fuchey; F. Garibaldi; R. Gilman; C. Gu; D. Hamilton; C. Hanretty; O. Hansen; M. Hashemi Shabestari; O. Hen; T. Holmstrom; M. Huang; S. Iqbal; N. Kalantarians; H. Kang; A. Kelleher; M. Khandaker; I. Korover; J. Leckey; J. LeRose; R. Lindgren; E. Long; J. Mammei; D. J. Margaziotis; A. Martí Jimenez-Arguello; D. Meekins; Z. E. Meziani; M. Mihovilovic; N. Muangma; B. Norum; Nuruzzaman; K. Pan; S. Phillips; E. Piasetzky; A. Polychronopoulou; I. Pomerantz; M. Posik; V. Punjabi; X. Qian; A. Rakhman; P. E. Reimer; S. Riordan; G. Ron; A. Saha; E. Schulte; L. Selvy; R. Shneor; S. Sirca; J. Sjoegren; R. Subedi; V. Sulkosky; W. Tireman; D. Wang; J. Watson; B. Wojtsekhowski; W. Yan; I. Yaron; Z. Ye; X. Zhan; J. Zhang; Y. Zhang; B. Zhao; Z. Zhao; X. Zheng; P. Zhu

doi:10.1016/j.physletb.2016.06.076

Electroexcitation of the Δ⁺(1232) at low momentum transfer

A. Blomberg, D. Anez, N. Sparveris, A. J. Sarty, M. Paolone, S. Gilad, D. Higinbotham, Z. Ahmed, H. Albataineh, K. Allada, B. Anderson, K. Aniol, J. Annand, J. Arrington, T. Averett, H. Baghdasaryan, X. Bai, A. Beck, S. Beck, V. BelliniF. Benmokhtar, W. Boeglin, C. M. Camacho, A. Camsonne, C. Chen, J. P. Chen, K. Chirapatpimol, E. Cisbani, M. Dalton, W. Deconinck, M. Defurne, R. De Leo, D. Flay, N. Fomin, M. Friend, S. Frullani, E. Fuchey, F. Garibaldi, R. Gilman, C. Gu, D. Hamilton, C. Hanretty, O. Hansen, M. Hashemi Shabestari, O. Hen, T. Holmstrom, M. Huang, S. Iqbal, N. Kalantarians, H. Kang, A. Kelleher, M. Khandaker, I. Korover, J. Leckey, J. LeRose, R. Lindgren, E. Long, J. Mammei, D. J. Margaziotis, A. Martí Jimenez-Arguello, D. Meekins, Z. E. Meziani, M. Mihovilovic, N. Muangma, B. Norum, Nuruzzaman, K. Pan, S. Phillips, E. Piasetzky, A. Polychronopoulou, I. Pomerantz, M. Posik, V. Punjabi, X. Qian, A. Rakhman, P. E. Reimer, S. Riordan, G. Ron, A. Saha, E. Schulte, L. Selvy, R. Shneor, S. Sirca, J. Sjoegren, R. Subedi, V. Sulkosky, W. Tireman, D. Wang, J. Watson, B. Wojtsekhowski, W. Yan, I. Yaron, Z. Ye, X. Zhan, J. Zhang, Y. Zhang, B. Zhao, Z. Zhao, X. Zheng, P. Zhu

Beam Instrumentation

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

19 Scopus citations

Abstract

We report on new measurements at the resonance at the low momentum transfer region, where the mesonic cloud dynamics is predicted to be dominant and rapidly changing, offering a test bed for chiral effective field theory calculations. The new data explore the dependence of the resonant quadrupole amplitudes and for the first time indicate that the Electric and the Coulomb quadrupole amplitudes converge as. The measurements of the Coulomb quadrupole amplitude have been extended to the lowest momentum transfer ever reached, and suggest that more than half of its magnitude is attributed to the mesonic cloud in this region. The new data disagree with predictions of constituent quark models and are in reasonable agreement with dynamical calculations that include pion cloud effects, chiral effective field theory and lattice calculations. The measurements indicate that improvement is required to the theoretical calculations and provide valuable input that will allow their refinements.

Original language	English
Pages (from-to)	267-272
Number of pages	6
Journal	Physics Letters B
Volume	760
DOIs	https://doi.org/10.1016/j.physletb.2016.06.076
State	Published - Sep 10 2016

Funding

We would like to thank the JLab Hall A technical staff and Accelerator Division for their outstanding support, as well as T.-S.H. Lee, C. Alexandrou, C. Roberts, A. Bernstein, V. Pascalutsa and M. Vanderhaeghen for the useful discussions and correspondence. This work is supported by the National Science Foundation award PHY-1305536 and the UK Science and Technology Facilities Council (STFC 57071/1 , STFC 50727/1 ).

Keywords

CMR
Nucleon deformation
Pion electroproduction

Access to Document

10.1016/j.physletb.2016.06.076

Cite this

Blomberg, A., Anez, D., Sparveris, N., Sarty, A. J., Paolone, M., Gilad, S., Higinbotham, D., Ahmed, Z., Albataineh, H., Allada, K., Anderson, B., Aniol, K., Annand, J., Arrington, J., Averett, T., Baghdasaryan, H., Bai, X., Beck, A., Beck, S., ... Zhu, P. (2016). Electroexcitation of the Δ⁺(1232) at low momentum transfer. Physics Letters B, 760, 267-272. https://doi.org/10.1016/j.physletb.2016.06.076

@article{e5b85578cd904de0840782a46324048e,

title = "Electroexcitation of the Δ+(1232) at low momentum transfer",

abstract = "We report on new measurements at the resonance at the low momentum transfer region, where the mesonic cloud dynamics is predicted to be dominant and rapidly changing, offering a test bed for chiral effective field theory calculations. The new data explore the dependence of the resonant quadrupole amplitudes and for the first time indicate that the Electric and the Coulomb quadrupole amplitudes converge as. The measurements of the Coulomb quadrupole amplitude have been extended to the lowest momentum transfer ever reached, and suggest that more than half of its magnitude is attributed to the mesonic cloud in this region. The new data disagree with predictions of constituent quark models and are in reasonable agreement with dynamical calculations that include pion cloud effects, chiral effective field theory and lattice calculations. The measurements indicate that improvement is required to the theoretical calculations and provide valuable input that will allow their refinements.",

keywords = "CMR, Nucleon deformation, Pion electroproduction",

author = "A. Blomberg and D. Anez and N. Sparveris and Sarty, {A. J.} and M. Paolone and S. Gilad and D. Higinbotham and Z. Ahmed and H. Albataineh and K. Allada and B. Anderson and K. Aniol and J. Annand and J. Arrington and T. Averett and H. Baghdasaryan and X. Bai and A. Beck and S. Beck and V. Bellini and F. Benmokhtar and W. Boeglin and Camacho, {C. M.} and A. Camsonne and C. Chen and Chen, {J. P.} and K. Chirapatpimol and E. Cisbani and M. Dalton and W. Deconinck and M. Defurne and {De Leo}, R. and D. Flay and N. Fomin and M. Friend and S. Frullani and E. Fuchey and F. Garibaldi and R. Gilman and C. Gu and D. Hamilton and C. Hanretty and O. Hansen and {Hashemi Shabestari}, M. and O. Hen and T. Holmstrom and M. Huang and S. Iqbal and N. Kalantarians and H. Kang and A. Kelleher and M. Khandaker and I. Korover and J. Leckey and J. LeRose and R. Lindgren and E. Long and J. Mammei and Margaziotis, {D. J.} and {Mart{\'i} Jimenez-Arguello}, A. and D. Meekins and Meziani, {Z. E.} and M. Mihovilovic and N. Muangma and B. Norum and Nuruzzaman and K. Pan and S. Phillips and E. Piasetzky and A. Polychronopoulou and I. Pomerantz and M. Posik and V. Punjabi and X. Qian and A. Rakhman and Reimer, {P. E.} and S. Riordan and G. Ron and A. Saha and E. Schulte and L. Selvy and R. Shneor and S. Sirca and J. Sjoegren and R. Subedi and V. Sulkosky and W. Tireman and D. Wang and J. Watson and B. Wojtsekhowski and W. Yan and I. Yaron and Z. Ye and X. Zhan and J. Zhang and Y. Zhang and B. Zhao and Z. Zhao and X. Zheng and P. Zhu",

note = "Publisher Copyright: {\textcopyright} 2016 The Authors",

year = "2016",

month = sep,

day = "10",

doi = "10.1016/j.physletb.2016.06.076",

language = "English",

volume = "760",

pages = "267--272",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier",

}

Blomberg, A, Anez, D, Sparveris, N, Sarty, AJ, Paolone, M, Gilad, S, Higinbotham, D, Ahmed, Z, Albataineh, H, Allada, K, Anderson, B, Aniol, K, Annand, J, Arrington, J, Averett, T, Baghdasaryan, H, Bai, X, Beck, A, Beck, S, Bellini, V, Benmokhtar, F, Boeglin, W, Camacho, CM, Camsonne, A, Chen, C, Chen, JP, Chirapatpimol, K, Cisbani, E, Dalton, M, Deconinck, W, Defurne, M, De Leo, R, Flay, D, Fomin, N, Friend, M, Frullani, S, Fuchey, E, Garibaldi, F, Gilman, R, Gu, C, Hamilton, D, Hanretty, C, Hansen, O, Hashemi Shabestari, M, Hen, O, Holmstrom, T, Huang, M, Iqbal, S, Kalantarians, N, Kang, H, Kelleher, A, Khandaker, M, Korover, I, Leckey, J, LeRose, J, Lindgren, R, Long, E, Mammei, J, Margaziotis, DJ, Martí Jimenez-Arguello, A, Meekins, D, Meziani, ZE, Mihovilovic, M, Muangma, N, Norum, B, Nuruzzaman, Pan, K, Phillips, S, Piasetzky, E, Polychronopoulou, A, Pomerantz, I, Posik, M, Punjabi, V, Qian, X, Rakhman, A, Reimer, PE, Riordan, S, Ron, G, Saha, A, Schulte, E, Selvy, L, Shneor, R, Sirca, S, Sjoegren, J, Subedi, R, Sulkosky, V, Tireman, W, Wang, D, Watson, J, Wojtsekhowski, B, Yan, W, Yaron, I, Ye, Z, Zhan, X, Zhang, J, Zhang, Y, Zhao, B, Zhao, Z, Zheng, X & Zhu, P 2016, 'Electroexcitation of the Δ⁺(1232) at low momentum transfer', Physics Letters B, vol. 760, pp. 267-272. https://doi.org/10.1016/j.physletb.2016.06.076

TY - JOUR

T1 - Electroexcitation of the Δ+(1232) at low momentum transfer

AU - Blomberg, A.

AU - Anez, D.

AU - Sparveris, N.

AU - Sarty, A. J.

AU - Paolone, M.

AU - Gilad, S.

AU - Higinbotham, D.

AU - Ahmed, Z.

AU - Albataineh, H.

AU - Allada, K.

AU - Anderson, B.

AU - Aniol, K.

AU - Annand, J.

AU - Arrington, J.

AU - Averett, T.

AU - Baghdasaryan, H.

AU - Bai, X.

AU - Beck, A.

AU - Beck, S.

AU - Bellini, V.

AU - Benmokhtar, F.

AU - Boeglin, W.

AU - Camacho, C. M.

AU - Camsonne, A.

AU - Chen, C.

AU - Chen, J. P.

AU - Chirapatpimol, K.

AU - Cisbani, E.

AU - Dalton, M.

AU - Deconinck, W.

AU - Defurne, M.

AU - De Leo, R.

AU - Flay, D.

AU - Fomin, N.

AU - Friend, M.

AU - Frullani, S.

AU - Fuchey, E.

AU - Garibaldi, F.

AU - Gilman, R.

AU - Gu, C.

AU - Hamilton, D.

AU - Hanretty, C.

AU - Hansen, O.

AU - Hashemi Shabestari, M.

AU - Hen, O.

AU - Holmstrom, T.

AU - Huang, M.

AU - Iqbal, S.

AU - Kalantarians, N.

AU - Kang, H.

AU - Kelleher, A.

AU - Khandaker, M.

AU - Korover, I.

AU - Leckey, J.

AU - LeRose, J.

AU - Lindgren, R.

AU - Long, E.

AU - Mammei, J.

AU - Margaziotis, D. J.

AU - Martí Jimenez-Arguello, A.

AU - Meekins, D.

AU - Meziani, Z. E.

AU - Mihovilovic, M.

AU - Muangma, N.

AU - Norum, B.

AU - Nuruzzaman,

AU - Pan, K.

AU - Phillips, S.

AU - Piasetzky, E.

AU - Polychronopoulou, A.

AU - Pomerantz, I.

AU - Posik, M.

AU - Punjabi, V.

AU - Qian, X.

AU - Rakhman, A.

AU - Reimer, P. E.

AU - Riordan, S.

AU - Ron, G.

AU - Saha, A.

AU - Schulte, E.

AU - Selvy, L.

AU - Shneor, R.

AU - Sirca, S.

AU - Sjoegren, J.

AU - Subedi, R.

AU - Sulkosky, V.

AU - Tireman, W.

AU - Wang, D.

AU - Watson, J.

AU - Wojtsekhowski, B.

AU - Yan, W.

AU - Yaron, I.

AU - Ye, Z.

AU - Zhan, X.

AU - Zhang, J.

AU - Zhang, Y.

AU - Zhao, B.

AU - Zhao, Z.

AU - Zheng, X.

AU - Zhu, P.

PY - 2016/9/10

Y1 - 2016/9/10

N2 - We report on new measurements at the resonance at the low momentum transfer region, where the mesonic cloud dynamics is predicted to be dominant and rapidly changing, offering a test bed for chiral effective field theory calculations. The new data explore the dependence of the resonant quadrupole amplitudes and for the first time indicate that the Electric and the Coulomb quadrupole amplitudes converge as. The measurements of the Coulomb quadrupole amplitude have been extended to the lowest momentum transfer ever reached, and suggest that more than half of its magnitude is attributed to the mesonic cloud in this region. The new data disagree with predictions of constituent quark models and are in reasonable agreement with dynamical calculations that include pion cloud effects, chiral effective field theory and lattice calculations. The measurements indicate that improvement is required to the theoretical calculations and provide valuable input that will allow their refinements.

AB - We report on new measurements at the resonance at the low momentum transfer region, where the mesonic cloud dynamics is predicted to be dominant and rapidly changing, offering a test bed for chiral effective field theory calculations. The new data explore the dependence of the resonant quadrupole amplitudes and for the first time indicate that the Electric and the Coulomb quadrupole amplitudes converge as. The measurements of the Coulomb quadrupole amplitude have been extended to the lowest momentum transfer ever reached, and suggest that more than half of its magnitude is attributed to the mesonic cloud in this region. The new data disagree with predictions of constituent quark models and are in reasonable agreement with dynamical calculations that include pion cloud effects, chiral effective field theory and lattice calculations. The measurements indicate that improvement is required to the theoretical calculations and provide valuable input that will allow their refinements.

KW - CMR

KW - Nucleon deformation

KW - Pion electroproduction

UR - http://www.scopus.com/inward/record.url?scp=84978027770&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2016.06.076

DO - 10.1016/j.physletb.2016.06.076

M3 - Article

AN - SCOPUS:84978027770

SN - 0370-2693

VL - 760

SP - 267

EP - 272

JO - Physics Letters B

JF - Physics Letters B

ER -