Investigation of the conjectured nucleon deformation at low momentum transfer

N. F. Sparveris, Ricardo Alarcon, A. M. Bernstein, W. Bertozzi, T. Botto, P. Bourgeois, J. Calarco, F. Casagrande, M. O. Distler, K. Dow, M. Farkondeh, S. Georgakopoulos, S. Gilad, R. Hicks, M. Holtrop, A. Hotta, X. Jiang, A. Karabarbounis, J. Kirkpatrick, S. Kowalski & 17 others R. Milner, R. Miskimen, I. Nakagawa, C. N. Papanicolas, A. J. Sarty, Y. Sato, S. Širca, J. Shaw, E. Six, S. Stave, E. Stiliaris, T. Tamae, G. Tsentalovich, C. Tschalaer, W. Turchinetz, Z. L. Zhou, T. Zwart

Research output: Contribution to journalArticle

102 Citations (Scopus)

Abstract

We report new precise H(e, e′p)-π0 measurements at the Δ(1232) resonance at Q2 = 0.127 (GeV/c)2 obtained at the MIT-Bates out-of-plane scattering facility which are particularly sensitive to the transverse electric amplitude (E2) of the γ*N → Δ transition. The new data have been analyzed together with those of earlier measurements to yield precise quadrupole to dipole amplitude ratios: Re(E 1+ 3/2/M1+ 3/2) = (-2.3 ± 0.3stat+syst ± 0.6model)% and Re(S 1+ 3/2/M1+ 3/2) = (-6.1 ± 0.2stat+syst ± 0.5model)% for M1+ 3/2 = (41.4 ± 0.3stat+syst ± 0.4 model)(10-3/mπ+). The derived amplitudes give credence to the conjecture of deformation in hadrons favoring, at low Q2, the dominance of mesonic effects.

Original languageEnglish (US)
Article number022003
JournalPhysical Review Letters
Volume94
Issue number2
DOIs
StatePublished - Jan 21 2005

Fingerprint

momentum transfer
hadrons
quadrupoles
dipoles
scattering

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Sparveris, N. F., Alarcon, R., Bernstein, A. M., Bertozzi, W., Botto, T., Bourgeois, P., ... Zwart, T. (2005). Investigation of the conjectured nucleon deformation at low momentum transfer. Physical Review Letters, 94(2), [022003]. https://doi.org/10.1103/PhysRevLett.94.022003

Investigation of the conjectured nucleon deformation at low momentum transfer. / Sparveris, N. F.; Alarcon, Ricardo; Bernstein, A. M.; Bertozzi, W.; Botto, T.; Bourgeois, P.; Calarco, J.; Casagrande, F.; Distler, M. O.; Dow, K.; Farkondeh, M.; Georgakopoulos, S.; Gilad, S.; Hicks, R.; Holtrop, M.; Hotta, A.; Jiang, X.; Karabarbounis, A.; Kirkpatrick, J.; Kowalski, S.; Milner, R.; Miskimen, R.; Nakagawa, I.; Papanicolas, C. N.; Sarty, A. J.; Sato, Y.; Širca, S.; Shaw, J.; Six, E.; Stave, S.; Stiliaris, E.; Tamae, T.; Tsentalovich, G.; Tschalaer, C.; Turchinetz, W.; Zhou, Z. L.; Zwart, T.

In: Physical Review Letters, Vol. 94, No. 2, 022003, 21.01.2005.

Research output: Contribution to journalArticle

Sparveris, NF, Alarcon, R, Bernstein, AM, Bertozzi, W, Botto, T, Bourgeois, P, Calarco, J, Casagrande, F, Distler, MO, Dow, K, Farkondeh, M, Georgakopoulos, S, Gilad, S, Hicks, R, Holtrop, M, Hotta, A, Jiang, X, Karabarbounis, A, Kirkpatrick, J, Kowalski, S, Milner, R, Miskimen, R, Nakagawa, I, Papanicolas, CN, Sarty, AJ, Sato, Y, Širca, S, Shaw, J, Six, E, Stave, S, Stiliaris, E, Tamae, T, Tsentalovich, G, Tschalaer, C, Turchinetz, W, Zhou, ZL & Zwart, T 2005, 'Investigation of the conjectured nucleon deformation at low momentum transfer', Physical Review Letters, vol. 94, no. 2, 022003. https://doi.org/10.1103/PhysRevLett.94.022003
Sparveris, N. F. ; Alarcon, Ricardo ; Bernstein, A. M. ; Bertozzi, W. ; Botto, T. ; Bourgeois, P. ; Calarco, J. ; Casagrande, F. ; Distler, M. O. ; Dow, K. ; Farkondeh, M. ; Georgakopoulos, S. ; Gilad, S. ; Hicks, R. ; Holtrop, M. ; Hotta, A. ; Jiang, X. ; Karabarbounis, A. ; Kirkpatrick, J. ; Kowalski, S. ; Milner, R. ; Miskimen, R. ; Nakagawa, I. ; Papanicolas, C. N. ; Sarty, A. J. ; Sato, Y. ; Širca, S. ; Shaw, J. ; Six, E. ; Stave, S. ; Stiliaris, E. ; Tamae, T. ; Tsentalovich, G. ; Tschalaer, C. ; Turchinetz, W. ; Zhou, Z. L. ; Zwart, T. / Investigation of the conjectured nucleon deformation at low momentum transfer. In: Physical Review Letters. 2005 ; Vol. 94, No. 2.
@article{ad3a68a94eb24fad8cc7bf40365e9b66,
title = "Investigation of the conjectured nucleon deformation at low momentum transfer",
abstract = "We report new precise H(e, e′p)-π0 measurements at the Δ(1232) resonance at Q2 = 0.127 (GeV/c)2 obtained at the MIT-Bates out-of-plane scattering facility which are particularly sensitive to the transverse electric amplitude (E2) of the γ*N → Δ transition. The new data have been analyzed together with those of earlier measurements to yield precise quadrupole to dipole amplitude ratios: Re(E 1+ 3/2/M1+ 3/2) = (-2.3 ± 0.3stat+syst ± 0.6model){\%} and Re(S 1+ 3/2/M1+ 3/2) = (-6.1 ± 0.2stat+syst ± 0.5model){\%} for M1+ 3/2 = (41.4 ± 0.3stat+syst ± 0.4 model)(10-3/mπ+). The derived amplitudes give credence to the conjecture of deformation in hadrons favoring, at low Q2, the dominance of mesonic effects.",
author = "Sparveris, {N. F.} and Ricardo Alarcon and Bernstein, {A. M.} and W. Bertozzi and T. Botto and P. Bourgeois and J. Calarco and F. Casagrande and Distler, {M. O.} and K. Dow and M. Farkondeh and S. Georgakopoulos and S. Gilad and R. Hicks and M. Holtrop and A. Hotta and X. Jiang and A. Karabarbounis and J. Kirkpatrick and S. Kowalski and R. Milner and R. Miskimen and I. Nakagawa and Papanicolas, {C. N.} and Sarty, {A. J.} and Y. Sato and S. Širca and J. Shaw and E. Six and S. Stave and E. Stiliaris and T. Tamae and G. Tsentalovich and C. Tschalaer and W. Turchinetz and Zhou, {Z. L.} and T. Zwart",
year = "2005",
month = "1",
day = "21",
doi = "10.1103/PhysRevLett.94.022003",
language = "English (US)",
volume = "94",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "2",

}

TY - JOUR

T1 - Investigation of the conjectured nucleon deformation at low momentum transfer

AU - Sparveris, N. F.

AU - Alarcon, Ricardo

AU - Bernstein, A. M.

AU - Bertozzi, W.

AU - Botto, T.

AU - Bourgeois, P.

AU - Calarco, J.

AU - Casagrande, F.

AU - Distler, M. O.

AU - Dow, K.

AU - Farkondeh, M.

AU - Georgakopoulos, S.

AU - Gilad, S.

AU - Hicks, R.

AU - Holtrop, M.

AU - Hotta, A.

AU - Jiang, X.

AU - Karabarbounis, A.

AU - Kirkpatrick, J.

AU - Kowalski, S.

AU - Milner, R.

AU - Miskimen, R.

AU - Nakagawa, I.

AU - Papanicolas, C. N.

AU - Sarty, A. J.

AU - Sato, Y.

AU - Širca, S.

AU - Shaw, J.

AU - Six, E.

AU - Stave, S.

AU - Stiliaris, E.

AU - Tamae, T.

AU - Tsentalovich, G.

AU - Tschalaer, C.

AU - Turchinetz, W.

AU - Zhou, Z. L.

AU - Zwart, T.

PY - 2005/1/21

Y1 - 2005/1/21

N2 - We report new precise H(e, e′p)-π0 measurements at the Δ(1232) resonance at Q2 = 0.127 (GeV/c)2 obtained at the MIT-Bates out-of-plane scattering facility which are particularly sensitive to the transverse electric amplitude (E2) of the γ*N → Δ transition. The new data have been analyzed together with those of earlier measurements to yield precise quadrupole to dipole amplitude ratios: Re(E 1+ 3/2/M1+ 3/2) = (-2.3 ± 0.3stat+syst ± 0.6model)% and Re(S 1+ 3/2/M1+ 3/2) = (-6.1 ± 0.2stat+syst ± 0.5model)% for M1+ 3/2 = (41.4 ± 0.3stat+syst ± 0.4 model)(10-3/mπ+). The derived amplitudes give credence to the conjecture of deformation in hadrons favoring, at low Q2, the dominance of mesonic effects.

AB - We report new precise H(e, e′p)-π0 measurements at the Δ(1232) resonance at Q2 = 0.127 (GeV/c)2 obtained at the MIT-Bates out-of-plane scattering facility which are particularly sensitive to the transverse electric amplitude (E2) of the γ*N → Δ transition. The new data have been analyzed together with those of earlier measurements to yield precise quadrupole to dipole amplitude ratios: Re(E 1+ 3/2/M1+ 3/2) = (-2.3 ± 0.3stat+syst ± 0.6model)% and Re(S 1+ 3/2/M1+ 3/2) = (-6.1 ± 0.2stat+syst ± 0.5model)% for M1+ 3/2 = (41.4 ± 0.3stat+syst ± 0.4 model)(10-3/mπ+). The derived amplitudes give credence to the conjecture of deformation in hadrons favoring, at low Q2, the dominance of mesonic effects.

UR - http://www.scopus.com/inward/record.url?scp=18144430672&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=18144430672&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.94.022003

DO - 10.1103/PhysRevLett.94.022003

M3 - Article

VL - 94

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 2

M1 - 022003

ER -