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Pregled bibliografske jedinice broj: 375790

Measurements of the gamma*p->Delta Reaction At Low Q^2: Probing the Mesonic Contribution

Stave, S., Sparveris, N.; Distler, M.O.; Nakagawa, I.; Achenbach, P.; Ayerbe Gayoso, C.; Baumann, D.; Bernauer, J.; Bernstein, A.M.; Bohm, R.; Bosnar, Damir et al.
Measurements of the gamma*p->Delta Reaction At Low Q^2: Probing the Mesonic Contribution // Physical Review C, 78 (2008), 025209-1 doi:10.1103/PhysRevC.78.025209 (međunarodna recenzija, članak, znanstveni)

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Naslov
Measurements of the gamma*p->Delta Reaction At Low Q^2: Probing the Mesonic Contribution

Autori
Stave, S., Sparveris, N. ; Distler, M.O. ; Nakagawa, I. ; Achenbach, P. ; Ayerbe Gayoso, C. ; 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. ; Sirca, S. ; Stiliaris, S. ; Walcher, Th. ; Weis, M.

Izvornik
Physical Review C (0556-2813) 78 (2008); 025209-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Meson production; Baryon resonances with S=0

Sažetak
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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA

Projekti:
119-1191005-1021 - QCD i jezgre; primjena nuklearnih metoda:materijali,medicina,okoliš (Bosnar, Damir, MZOS ) ( CroRIS)

Ustanove:
Prirodoslovno-matematički fakultet, Zagreb

Profili:

Avatar Url Mihael Makek (autor)

Avatar Url Damir Bosnar (autor)

Poveznice na cjeloviti tekst rada:

doi scitation.aip.org link.aps.org

Citiraj ovu publikaciju:

Stave, S., Sparveris, N.; Distler, M.O.; Nakagawa, I.; Achenbach, P.; Ayerbe Gayoso, C.; Baumann, D.; Bernauer, J.; Bernstein, A.M.; Bohm, R.; Bosnar, Damir et al.
Measurements of the gamma*p->Delta Reaction At Low Q^2: Probing the Mesonic Contribution // Physical Review C, 78 (2008), 025209-1 doi:10.1103/PhysRevC.78.025209 (međunarodna recenzija, članak, znanstveni)
Stave, S., Sparveris, N., Distler, M., Nakagawa, I., Achenbach, P., Ayerbe Gayoso, C., Baumann, D., Bernauer, J., Bernstein, A., Bohm, R. & Bosnar, D. (2008) Measurements of the gamma*p->Delta Reaction At Low Q^2: Probing the Mesonic Contribution. Physical Review C, 78, 025209-1 doi:10.1103/PhysRevC.78.025209.
@article{article, author = {Distler, M.O. and Nakagawa, I. and Achenbach, P. and Ayerbe Gayoso, C. and Baumann, D. and Bernauer, J. and Bernstein, A.M. and Bohm, R. and Bosnar, Damir and Botto, T. and Christopoulou, A. and Dale, D. and Ding, M. and Doria, L. and Friedrich, J. and Karabarbounis, A. and Makek, Mihael and Merkel, H. and Muller, U. and Neuhausen, R. and Nungesser, L. and Papanicolas, C.N. and Piegsa, A. and Pochodzalla, J. and Potokar, M. and Seimetz, M. and Sirca, S. and Stiliaris, S. and Walcher, Th. and Weis, M.}, year = {2008}, pages = {025209-1-025209-18}, DOI = {10.1103/PhysRevC.78.025209}, keywords = {Meson production, Baryon resonances with S=0}, journal = {Physical Review C}, doi = {10.1103/PhysRevC.78.025209}, volume = {78}, issn = {0556-2813}, title = {Measurements of the gamma\astp->Delta Reaction At Low Q\^{}2: Probing the Mesonic Contribution}, keyword = {Meson production, Baryon resonances with S=0} }
@article{article, author = {Distler, M.O. and Nakagawa, I. and Achenbach, P. and Ayerbe Gayoso, C. and Baumann, D. and Bernauer, J. and Bernstein, A.M. and Bohm, R. and Bosnar, Damir and Botto, T. and Christopoulou, A. and Dale, D. and Ding, M. and Doria, L. and Friedrich, J. and Karabarbounis, A. and Makek, Mihael and Merkel, H. and Muller, U. and Neuhausen, R. and Nungesser, L. and Papanicolas, C.N. and Piegsa, A. and Pochodzalla, J. and Potokar, M. and Seimetz, M. and Sirca, S. and Stiliaris, S. and Walcher, Th. and Weis, M.}, year = {2008}, pages = {025209-1-025209-18}, DOI = {10.1103/PhysRevC.78.025209}, keywords = {Meson production, Baryon resonances with S=0}, journal = {Physical Review C}, doi = {10.1103/PhysRevC.78.025209}, volume = {78}, issn = {0556-2813}, title = {Measurements of the gamma\astp->Delta Reaction At Low Q\^{}2: Probing the Mesonic Contribution}, keyword = {Meson production, Baryon resonances with S=0} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus

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