Electroexcitation Of The Delta(+)(1232) At Low Momentum Transfer

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.; Bellini, V.; Benmokhtar, F.; Boeglin, W.; Camacho, C. M.; Camsonne, A.; Chen, C.; Chen, J. P.; 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.; Shabestari, M. Hashemi; 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, D. J.; Jimenez-Arguello, A. Marti; Meekins, D.; Meziani, Z. E.; Mihovilovic, M.; Muangma, N.; Norum, B.; Nuruzzaman, N.; Pan, K.; Phillips, S.; Piasetzky, E.; Polychronopoulou, A.; Pomerantz, I.; Posik, M.; Punjabi, V.; Qian, X.; Rakhman, A.; Reimer, P. E.; 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.

Title:	Electroexcitation Of The Delta(+)(1232) At Low Momentum Transfer.	28 views 4 downloads
Name(s):	Blomberg, A., author Anez, D., author Sparveris, N., author Sarty, A. J., author Paolone, M., author Gilad, S., author Higinbotham, D., author Ahmed, Z., author Albataineh, H., author Allada, K., author Anderson, B., author Aniol, K., author Annand, J., author Arrington, J., author Averett, T., author Baghdasaryan, H., author Bai, X., author Beck, A., author Beck, S., author Bellini, V., author Benmokhtar, F., author Boeglin, W., author Camacho, C. M., author Camsonne, A., author Chen, C., author Chen, J. P., author Chirapatpimol, K., author Cisbani, E., author Dalton, M., author Deconinck, W., author Defurne, M., author De Leo, R., author Flay, D., author Fomin, N., author Friend, M., author Frullani, S., author Fuchey, E., author Garibaldi, F., author Gilman, R., author Gu, C., author Hamilton, D., author Hanretty, C., author Hansen, O., author Shabestari, M. Hashemi, author Hen, O., author Holmstrom, T., author Huang, M., author Iqbal, S., author Kalantarians, N., author Kang, H., author Kelleher, A., author Khandaker, M., author Korover, I., author Leckey, J., author LeRose, J., author Lindgren, R., author Long, E., author Mammei, J., author Margaziotis, D. J., author Jimenez-Arguello, A. Marti, author Meekins, D., author Meziani, Z. E., author Mihovilovic, M., author Muangma, N., author Norum, B., author Nuruzzaman, N., author Pan, K., author Phillips, S., author Piasetzky, E., author Polychronopoulou, A., author Pomerantz, I., author Posik, M., author Punjabi, V., author Qian, X., author Rakhman, A., author Reimer, P. E., author Riordan, S., author Ron, G., author Saha, A., author Schulte, E., author Selvy, L., author Shneor, R., author Sirca, S., author Sjoegren, J., author Subedi, R., author Sulkosky, V., author Tireman, W., author Wang, D., author Watson, J., author Wojtsekhowski, B., author Yan, W., author Yaron, I., author Ye, Z., author Zhan, X., author Zhang, J., author Zhang, Y., author Zhao, B., author Zhao, Z., author Zheng, X., author Zhu, P., author
Type of Resource:	text
Genre:	Text
Date Issued:	2016-09-10
Physical Form:	computer online resource
Extent:	1 online resource
Language(s):	English
Abstract/Description:	We report on new p(e, e' p)pi degrees. measurements at the Delta(+)(1232) 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 Q(2) dependence of the resonant quadrupole amplitudes and for the first time indicate that the Electric and the Coulomb quadrupole amplitudes converge as Q(2) -> 0. 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. (C) 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license.
Identifier:	FSU_libsubv1_wos_000382890500042 (IID), 10.1016/j.physletb.2016.06.076 (DOI)
Keywords:	CMR, delta(1232) resonance, electroproduction, gamma-asterisk-p, nucleon, Nucleon deformation, p((e)over-right-arrow, Photoproduction, pion cloud, Pion electroproduction, quark-model, transition form-factors, virtual compton-scattering
Publication Note:	The publisher’s version of record is available at https://doi.org/10.1016/j.physletb.2016.06.076
Persistent Link to This Record:	http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000382890500042
Owner Institution:	FSU
Is Part Of:	Physics Letters B. 0370-2693
Issue:	vol. 760

Blomberg, A., Anez, D., Sparveris, N., Sarty, A. J., Paolone, M., Gilad, S., … Zhu, P. (2016). Electroexcitation Of The Delta(+)(1232) At Low Momentum Transfer. Physics Letters B. Retrieved from http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000382890500042

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