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Pregled bibliografske jedinice broj: 530737

Determination of the η-transition form factor in the γp→pη→pγe+e− reaction

Berghäuser, H.; Metag, V.; Starostin, A.; Aguar Bartolomé, P.; Akasoy, L.K.; Annand, J.R.M.; Arends, H.J.; Bantawa, K.; Beck, R.; Bekrenev, V. et al.
Determination of the η-transition form factor in the γp→pη→pγe+e− reaction // Physics letters. B, 701 (2011), 5; 562-567 doi:10.1016/j.physletb.2011.06.069 (međunarodna recenzija, članak, znanstveni)

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Naslov
Determination of the η-transition form factor in the γp→pη→pγe+e− reaction

Autori
Berghäuser, H. ; Metag, V. ; Starostin, A. ; Aguar Bartolomé, P. ; Akasoy, L.K. ; Annand, J.R.M. ; Arends, H.J. ; Bantawa, K. ; Beck, R. ; Bekrenev, V. ; Braghieri, A. ; Branford, D. ; Briscoe, W.J. ; Brudvik, J. ; Cherepnya, S. ; Demissie, B.T. ; Downie, E.J. ; Drexler, P. ; Dieterle, M. ; Fil’kov, L.V. ; Fix, A. ; Glazier, D.I. ; Heid, E. ; Hornidge, D. ; Jahn, O. ; Jude, T.C. ; Kashevarov, V.L. ; Knežević, Andrea ; Kondratiev, R. ; Korolija, Milorad ; Kotulla, M. ; Koulbardis, A. ; Kruglov, S. ; Krusche, B. ; Lemmer, B. ; Lisin, V. ; Livingston, K. ; MacGregor, I.J.D. ; Maghrbi, Y. ; Manley, D.M. ; Martinez-Fabregate, M. ; McGeorge, J.C. ; McNicoll, E.F. ; Mekterović, Darko ; Mićanović, Saša ; Mushkarenkov, A. ; Nefkens, B.M.K. ; Nikolaev, A. ; Novotny, R. ; Ostrick, M. ; Owens, R.O. ; Pedroni, P. ; Pheron, F. ; Polonski, A. ; Prakhov, S.N. ; Robinson, J. ; Rosner, G. ; Rostomyan, T. ; Schumann, S. ; Sober, D. I. ; Suarez, I.M. ; Supek, Ivan ; Tarbert, C.M. ; Thiel, M. ; Thomas, A. ; Unverzagt, M. ; Watts, D.P. ; Werthmüller, D. ; Zamboni, Ivana ; Zehr, F.

Izvornik
Physics letters. B (0370-2693) 701 (2011), 5; 562-567

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

Ključne riječi
Meson decays ; Transition form factor

Sažetak
The Dalitz decay η→γe+e− has been measured using the combined Crystal Ball and TAPS photon detector setup at the electron accelerator MAMI-C. Compared to the most recent transition form-factor measurement in the e+e− channel, statistics have been improved by one order of magnitude. The e+e− invariant mass distribution shows a deviation from the QED prediction for a point-like particle, which can be described by a form-factor. Using the usual monopole transition form-factor parameterization, F(m^2)=(1−m^2/Λ^2)^−1, a value of Λ^−2=(1.92±0.35(stat)±0.13(syst)) GeV^−2 has been determined. This value is in good agreement with a recent measurement of the η Dalitz decay in the μ+μ− channel and with recent form-factor calculations. An improved value of the branching ratio BR(η→γe+e−)=(6.6±0.4(stat)±0.4(syst))•10^−3 has been determined.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA

Projekti:
098-0982887-2888 - Hadronska fizika i QCD (Supek, Ivan, MZOS ) ( CroRIS)

Ustanove:
Institut "Ruđer Bošković", Zagreb

Profili:

Avatar Url Ivan Supek (autor)

Avatar Url Milorad Korolija (autor)

Avatar Url Darko Mekterović (autor)

Avatar Url Saša Mićanović (autor)

Avatar Url Andrea Knežević (autor)

Avatar Url Ivana Zamboni (autor)

Poveznice na cjeloviti tekst rada:

Pristup cjelovitom tekstu rada doi dx.doi.org www.sciencedirect.com

Citiraj ovu publikaciju:

Berghäuser, H.; Metag, V.; Starostin, A.; Aguar Bartolomé, P.; Akasoy, L.K.; Annand, J.R.M.; Arends, H.J.; Bantawa, K.; Beck, R.; Bekrenev, V. et al.
Determination of the η-transition form factor in the γp→pη→pγe+e− reaction // Physics letters. B, 701 (2011), 5; 562-567 doi:10.1016/j.physletb.2011.06.069 (međunarodna recenzija, članak, znanstveni)
Berghäuser, H., Metag, V., Starostin, A., Aguar Bartolomé, P., Akasoy, L., Annand, J., Arends, H., Bantawa, K., Beck, R. & Bekrenev, V. (2011) Determination of the η-transition form factor in the γp→pη→pγe+e− reaction. Physics letters. B, 701 (5), 562-567 doi:10.1016/j.physletb.2011.06.069.
@article{article, author = {Bergh\"{a}user, H. and Metag, V. and Starostin, A. and Aguar Bartolom\'{e}, P. and Akasoy, L.K. and Annand, J.R.M. and Arends, H.J. and Bantawa, K. and Beck, R. and Bekrenev, V. and Braghieri, A. and Branford, D. and Briscoe, W.J. and Brudvik, J. and Cherepnya, S. and Demissie, B.T. and Downie, E.J. and Drexler, P. and Dieterle, M. and Fil’kov, L.V. and Fix, A. and Glazier, D.I. and Heid, E. and Hornidge, D. and Jahn, O. and Jude, T.C. and Kashevarov, V.L. and Kne\v{z}evi\'{c}, Andrea and Kondratiev, R. and Korolija, Milorad and Kotulla, M. and Koulbardis, A. and Kruglov, S. and Krusche, B. and Lemmer, B. and Lisin, V. and Livingston, K. and MacGregor, I.J.D. and Maghrbi, Y. and Manley, D.M. and Martinez-Fabregate, M. and McGeorge, J.C. and McNicoll, E.F. and Mekterovi\'{c}, Darko and Mi\'{c}anovi\'{c}, Sa\v{s}a and Mushkarenkov, A. and Nefkens, B.M.K. and Nikolaev, A. and Novotny, R. and Ostrick, M. and Owens, R.O. and Pedroni, P. and Pheron, F. and Polonski, A. and Prakhov, S.N. and Robinson, J. and Rosner, G. and Rostomyan, T. and Schumann, S. and Sober, D. I. and Suarez, I.M. and Supek, Ivan and Tarbert, C.M. and Thiel, M. and Thomas, A. and Unverzagt, M. and Watts, D.P. and Werthm\"{u}ller, D. and Zamboni, Ivana and Zehr, F.}, year = {2011}, pages = {562-567}, DOI = {10.1016/j.physletb.2011.06.069}, keywords = {Meson decays, Transition form factor}, journal = {Physics letters. B}, doi = {10.1016/j.physletb.2011.06.069}, volume = {701}, number = {5}, issn = {0370-2693}, title = {Determination of the η-transition form factor in the γp→pη→pγe+e− reaction}, keyword = {Meson decays, Transition form factor} }
@article{article, author = {Bergh\"{a}user, H. and Metag, V. and Starostin, A. and Aguar Bartolom\'{e}, P. and Akasoy, L.K. and Annand, J.R.M. and Arends, H.J. and Bantawa, K. and Beck, R. and Bekrenev, V. and Braghieri, A. and Branford, D. and Briscoe, W.J. and Brudvik, J. and Cherepnya, S. and Demissie, B.T. and Downie, E.J. and Drexler, P. and Dieterle, M. and Fil’kov, L.V. and Fix, A. and Glazier, D.I. and Heid, E. and Hornidge, D. and Jahn, O. and Jude, T.C. and Kashevarov, V.L. and Kne\v{z}evi\'{c}, Andrea and Kondratiev, R. and Korolija, Milorad and Kotulla, M. and Koulbardis, A. and Kruglov, S. and Krusche, B. and Lemmer, B. and Lisin, V. and Livingston, K. and MacGregor, I.J.D. and Maghrbi, Y. and Manley, D.M. and Martinez-Fabregate, M. and McGeorge, J.C. and McNicoll, E.F. and Mekterovi\'{c}, Darko and Mi\'{c}anovi\'{c}, Sa\v{s}a and Mushkarenkov, A. and Nefkens, B.M.K. and Nikolaev, A. and Novotny, R. and Ostrick, M. and Owens, R.O. and Pedroni, P. and Pheron, F. and Polonski, A. and Prakhov, S.N. and Robinson, J. and Rosner, G. and Rostomyan, T. and Schumann, S. and Sober, D. I. and Suarez, I.M. and Supek, Ivan and Tarbert, C.M. and Thiel, M. and Thomas, A. and Unverzagt, M. and Watts, D.P. and Werthm\"{u}ller, D. and Zamboni, Ivana and Zehr, F.}, year = {2011}, pages = {562-567}, DOI = {10.1016/j.physletb.2011.06.069}, keywords = {Meson decays, Transition form factor}, journal = {Physics letters. B}, doi = {10.1016/j.physletb.2011.06.069}, volume = {701}, number = {5}, issn = {0370-2693}, title = {Determination of the η-transition form factor in the γp→pη→pγe+e− reaction}, keyword = {Meson decays, Transition form factor} }

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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