Measurement of the radiative width of the A2(1320) in two-photon interactions

M. Althoff, W. Braunschweig, R. Gerhards, F. J. Kirschfink, H. U. Martyn, P. Rosskamp, W. Wallraff, B. Bock, J. Eisenmann, H. M. Fischer, H. Hartmann, A. Jocksch, H. Kolanoski, H. Kück, V. Mertens, R. Wedemeyer, B. Foster, E. Bernardi, Y. Eisenberg, A. EskreysK. Gather, H. Hultschig, P. Joos, B. Klima, H. Kowalski, A. Ladage, B. Löhr, D. Lüke, P. Mättig, D. Notz, D. Revel, E. Ronat, D. Trines, T. Tymieniecka, R. Walczak, G. Wolf, W. Zeuner, E. Hilger, T. Kracht, H. L. Krasemann, J. Krüger, E. Lohrmann, G. Poelz, K. U. Pösnecker, D. M. Binnie, P. J. Dornan, D. A. Garbutt, C. Jenkins, W. G. Jones, J. K. Sedgbeer, D. Su, J. Thomas, W. A.T. Wan Abdullah, F. Barreiro, E. Ros, M. G. Bowler, P. Bull, R. J. Cashmore, P. Dauncey, R. Devenish, G. Heath, D. Mellor, P. Ratoff, S. L. Lloyd, G. E. Forden, J. C. Hart, D. K. Hasell, D. H. Saxon, S. Brandt, M. Holder, L. Labarga, B. Neumann, U. Karshon, G. Mikenberg, R. Mir, A. Montag, A. Shapira, G. Yekutieli, G. Baranko, A. Caldwell, M. Cherney, J. M. Izen, S. Ritz, D. Strom, M. Takashima, E. Wicklund, Sau Lan Wu, G. Zonering

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Abstract

The reaction e+e-→e+e- A2 (1320) has been observed by detecting the decay A2→π+-π0. The two-photon width of the A2 has been measured to be G{cyrillic}(A2→γγ)=(0.09±0.27 (stat)±0.16 (syst)) keV. The cross section σ(γγ→π+-π0 has been determined outside the A2 resonance region.

Original languageEnglish (US)
Pages (from-to)537-543
Number of pages7
JournalZeitschrift für Physik C Particles and Fields
Volume31
Issue number4
DOIs
StatePublished - Dec 1 1986
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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    Althoff, M., Braunschweig, W., Gerhards, R., Kirschfink, F. J., Martyn, H. U., Rosskamp, P., Wallraff, W., Bock, B., Eisenmann, J., Fischer, H. M., Hartmann, H., Jocksch, A., Kolanoski, H., Kück, H., Mertens, V., Wedemeyer, R., Foster, B., Bernardi, E., Eisenberg, Y., ... Zonering, G. (1986). Measurement of the radiative width of the A2(1320) in two-photon interactions. Zeitschrift für Physik C Particles and Fields, 31(4), 537-543. https://doi.org/10.1007/BF01551074