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Pregled bibliografske jedinice broj: 313477

Beam-helicity asymmetry in photon and pion electroproduction in the Delta(1232) resonance region at Q^2= 0.35 (GeV/c)^2

Bensafa, I.K.; Achenbach, P.; Ases Antelo, M.; Ayerbe, C.; Baumann, D.; Böhm, R.; Bosnar, Damir; Burtin, E.; Defaÿ , x. et al.
Beam-helicity asymmetry in photon and pion electroproduction in the Delta(1232) resonance region at Q^2= 0.35 (GeV/c)^2 // The European Physical Journal A - Hadrons and Nuclei, 32 (2007), 69-75 (međunarodna recenzija, članak, znanstveni)

CROSBI ID: 313477 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Beam-helicity asymmetry in photon and pion electroproduction in the Delta(1232) resonance region at Q^2= 0.35 (GeV/c)^2

Autori
Bensafa, I.K. ; Achenbach, P. ; Ases Antelo, M. ; Ayerbe, C. ; Baumann, D. ; Böhm, R. ; Bosnar, Damir ; Burtin, E. ; Defaÿ , x. ; D'Hose, N. ; Ding, M. ; Distler, M.O. ; Doria, L. ; Fonvieille, H. ; Friedrich, J.M. ; Friedrich, J. ; Garcia Llongo, J. ; Janssens, P. ; Jover Manas, G. ; Kohl, M. ; Laveissiere, G. ; Lloyd, M. ; Makek, Mihael ; Marroncle, J. ; Merkel, H. ; Merle, P. ; Müller, U. ; Nungesser, L. ; Pasquini, B. ; Perez Benito, R. ; Pochodzalla, J. ; Potokar, M. ; Rosner, G. ; Sanchez Majos, S. ; Seimetz, M. ; Sirca, S. ; Spitzenberg, T. ; Tamas, G. ; Van de Vyver, R. ; Van Hoorebeke, L. ; Walcher, Th. ; Weis M.

Izvornik
The European Physical Journal A - Hadrons and Nuclei (1434-6001) 32 (2007); 69-75

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

Ključne riječi
Electromagnetic processes and properties; Elastic and Compton scattering; Meson production; Baryon resonances

Sažetak
The beam-helicity asymmetry has been measured simultaneously for the reactions $ \ ; \stackrel{;{;\rightarrow};};{;{;e};};\ ; $ p→ epγ and $ \ ; \stackrel{;{;\rightarrow};};{;{;e};};\ ; $ p→ epπ 0 in the Δ (1232)-resonance region at Q 2 = 0.35(GeV/c)2. The experiment was performed at MAMI with a longitudinally polarized beam and an out-of-plane detection of the proton. The results are compared with calculations based on dispersion relations for virtual Compton scattering and with the MAID model for pion electroproduction. There is an overall good agreement between experiment and theoretical calculations. The remaining discrepancies may be ascribed to an imperfect parametrization of some γ (*) N→ π N multipoles, mainly contributing to the non-resonant background. The beam-helicity asymmetry in both channels (γ and π 0) shows a good sensitivity to these multipoles and should allow future improvement in their parametrization.

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 Damir Bosnar (autor)

www.springerlink.com

Citiraj ovu publikaciju:

Bensafa, I.K.; Achenbach, P.; Ases Antelo, M.; Ayerbe, C.; Baumann, D.; Böhm, R.; Bosnar, Damir; Burtin, E.; Defaÿ , x. et al.
Beam-helicity asymmetry in photon and pion electroproduction in the Delta(1232) resonance region at Q^2= 0.35 (GeV/c)^2 // The European Physical Journal A - Hadrons and Nuclei, 32 (2007), 69-75 (međunarodna recenzija, članak, znanstveni)
Bensafa, I., Achenbach, P., Ases Antelo, M., Ayerbe, C., Baumann, D., Böhm, R., Bosnar, D., Burtin, E., Defaÿ & , x. (2007) Beam-helicity asymmetry in photon and pion electroproduction in the Delta(1232) resonance region at Q^2= 0.35 (GeV/c)^2. The European Physical Journal A - Hadrons and Nuclei, 32, 69-75.
@article{article, author = {Bensafa, I.K. and Achenbach, P. and Ases Antelo, M. and Ayerbe, C. and Baumann, D. and B\"{o}hm, R. and Bosnar, Damir and Burtin, E. and , x. and D'Hose, N. and Ding, M. and Distler, M.O. and Doria, L. and Fonvieille, H. and Friedrich, J.M. and Friedrich, J. and Garcia Llongo, J. and Janssens, P. and Jover Manas, G. and Kohl, M. and Laveissiere, G. and Lloyd, M. and Makek, Mihael and Marroncle, J. and Merkel, H. and Merle, P. and M\"{u}ller, U. and Nungesser, L. and Pasquini, B. and Perez Benito, R. and Pochodzalla, J. and Potokar, M. and Rosner, G. and Sanchez Majos, S. and Seimetz, M. and Sirca, S. and Spitzenberg, T. and Tamas, G. and Van de Vyver, R. and Van Hoorebeke, L. and Walcher, Th.}, year = {2007}, pages = {69-75}, keywords = {Electromagnetic processes and properties, Elastic and Compton scattering, Meson production, Baryon resonances}, journal = {The European Physical Journal A - Hadrons and Nuclei}, volume = {32}, issn = {1434-6001}, title = {Beam-helicity asymmetry in photon and pion electroproduction in the Delta(1232) resonance region at Q\^{}2= 0.35 (GeV/c)\^{}2}, keyword = {Electromagnetic processes and properties, Elastic and Compton scattering, Meson production, Baryon resonances} }
@article{article, author = {Bensafa, I.K. and Achenbach, P. and Ases Antelo, M. and Ayerbe, C. and Baumann, D. and B\"{o}hm, R. and Bosnar, Damir and Burtin, E. and , x. and D'Hose, N. and Ding, M. and Distler, M.O. and Doria, L. and Fonvieille, H. and Friedrich, J.M. and Friedrich, J. and Garcia Llongo, J. and Janssens, P. and Jover Manas, G. and Kohl, M. and Laveissiere, G. and Lloyd, M. and Makek, Mihael and Marroncle, J. and Merkel, H. and Merle, P. and M\"{u}ller, U. and Nungesser, L. and Pasquini, B. and Perez Benito, R. and Pochodzalla, J. and Potokar, M. and Rosner, G. and Sanchez Majos, S. and Seimetz, M. and Sirca, S. and Spitzenberg, T. and Tamas, G. and Van de Vyver, R. and Van Hoorebeke, L. and Walcher, Th.}, year = {2007}, pages = {69-75}, keywords = {Electromagnetic processes and properties, Elastic and Compton scattering, Meson production, Baryon resonances}, journal = {The European Physical Journal A - Hadrons and Nuclei}, volume = {32}, issn = {1434-6001}, title = {Beam-helicity asymmetry in photon and pion electroproduction in the Delta(1232) resonance region at Q\^{}2= 0.35 (GeV/c)\^{}2}, keyword = {Electromagnetic processes and properties, Elastic and Compton scattering, Meson production, Baryon resonances} }

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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