prikaz prve stranice dokumenta Measurements of the γ∗p→Δ reaction at low Q2: Probing the mesonic contribution
  Download
PDF 951.77 KB
Scientific paper - Original scientific paper
Measurements of the γ∗p→Δ reaction at low Q2: Probing the mesonic contribution
Physical Review C - Nuclear Physics, 78 (2008), 2; 025209. https://doi.org/10.1103/PhysRevC.78.025209
(A1 Collaboration) Stave, S.; Sparveris, N.; Distler, M. O.; Nakagawa, I.; Achenbach, P.; Gayoso, C. Ayerbe; Baumann, D.; Bernauer, J.; Bernstein, A. M.; Bohm, R.; Bosnar, Damir; Botto, T.; Christopoulou, A.; Dale, D.; Ding, M.; Doria, L.; Friedrich, J.; Karabarbounis, A.; Makek, Mihael; Merkel, H.; Muller, U.; Neuhausen, R.; Nungesser, L.; Papanicolas, C. N.; Piegsa, A.; Pochodzalla, J.; Potokar, M.; Seimetz, M.; Širca, S.; Stiliaris, S.; Walcher, Th.; Weis, M. More authors...

Institutional repository: Repository of the Faculty of Science

Cite this document

Stave, S., Sparveris, N., Distler, M. O., Nakagawa, I., Achenbach, P., Gayoso, C. A. ... Weis, M. (2008). Measurements of the γ∗p→Δ reaction at low Q2: Probing the mesonic contribution. Physical Review C - Nuclear Physics, 78. (2). doi: 10.1103/PhysRevC.78.025209

Stave, S., et al. "Measurements of the γ∗p→Δ reaction at low Q2: Probing the mesonic contribution." Physical Review C - Nuclear Physics, vol. 78, no. 2, 2008. https://doi.org/10.1103/PhysRevC.78.025209

Stave, S., N. Sparveris, M. O. Distler, I. Nakagawa, P. Achenbach, C. Ayerbe Gayoso, D. Baumann, et al. "Measurements of the γ∗p→Δ reaction at low Q2: Probing the mesonic contribution." Physical Review C - Nuclear Physics 78, no. 2 (2008). https://doi.org/10.1103/PhysRevC.78.025209

Stave, S., et al. (2008) 'Measurements of the γ∗p→Δ reaction at low Q2: Probing the mesonic contribution', Physical Review C - Nuclear Physics, 78(2). doi: 10.1103/PhysRevC.78.025209

Stave S, Sparveris N, Distler MO, Nakagawa I, Achenbach P, Gayoso CA, and sur.. Measurements of the γ∗p→Δ reaction at low Q2: Probing the mesonic contribution. Physical Review C - Nuclear Physics [Internet]. 2008 [cited 2024 December 23];78(2). doi: 10.1103/PhysRevC.78.025209

S. Stave, et al., "Measurements of the γ∗p→Δ reaction at low Q2: Probing the mesonic contribution", Physical Review C - Nuclear Physics, vol. 78, no. 2, 2008. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:586400. [Accessed: 23 December 2024]

Metadata
Title (english)Measurements of the γ∗p→Δ reaction at low Q2: Probing the mesonic contribution
AuthorS. Stave
AuthorN. Sparveris
AuthorM. O. Distler
AuthorI. Nakagawa
AuthorP. Achenbach
AuthorC. Ayerbe Gayoso
AuthorD. Baumann
AuthorJ. Bernauer
AuthorA. M. Bernstein
AuthorR. Bohm
AuthorDamir Bosnar
MBZ: 134936
AuthorT. Botto
AuthorA. Christopoulou
AuthorD. Dale
AuthorM. Ding
AuthorL. Doria
AuthorJ. Friedrich
AuthorA. Karabarbounis
AuthorMihael Makek
AuthorH. Merkel
AuthorU. Muller
AuthorR. Neuhausen
AuthorL. Nungesser
AuthorC. N. Papanicolas
AuthorA. Piegsa
AuthorJ. Pochodzalla
AuthorM. Potokar
AuthorM. Seimetz
AuthorS. Širca
AuthorS. Stiliaris
AuthorTh. Walcher
AuthorM. Weis
CollaborationA1 Collaboration
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract (english)
The determination of nonspherical angular momentum amplitudes in nucleons at long ranges (low Q2) was accomplished through the p(, e'p)0 reaction in the region at Q2=0.060, 0.127, and 0.200 (GeV/c)2 at the Mainz Microtron with an accuracy for the cross sections of 4%. The results for the dominant transition magnetic dipole amplitude and the quadrupole to dipole ratios have been obtained with an estimated model uncertainty that is approximately the same as the experimental uncertainty. Lattice and effective field theory predictions agree with our data within the relatively large estimated theoretical uncertainties. Phenomenological models are in good agreement with experiment when the resonant amplitudes are adjusted to the data. To check reaction model calculations additional data were taken for center-of-mass energies below resonance and for the LT' structure function. These results confirm the dominance, and general Q2 variation, of the pionic contribution at large distances.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titlePhysical Review C - Nuclear Physics
Numberingvol. 78, no. 2, 025209
p-ISSN0556-2813
e-ISSN1089-490X
DOIhttps://doi.org/10.1103/PhysRevC.78.025209
URN:NBNurn:nbn:hr:217:586400
Publication2008
ProjectNumber: 119-1191005-1021
Title (croatian): QCD i jezgre; primjena nuklearnih metoda:materijali,medicina,okoliš
Leader: Damir Bosnar
Jurisdiction: Croatia
Funding stream: ZP
Document URLhttp://link.aps.org/doi/10.1103/PhysRevC.78.025209
Type of resourceText
Access conditionsOpen access
Terms of useLicence In copyright icon
Public noteCopyright (2008) by the American Physical Society. Received 14 March 2008; published 14 August 2008.
Created on2019-10-19 18:19:37