Measurement of the $\eta^\prime$ and Search for Other Resonances in $\gamma \gamma \to \eta \pi^0 \pi^0$
- Antreasyan, D.
- Bartels, H. W. S.
- Cartacci, A.
- Cavalli-Sforza, M.
- Clare, R.
- Conforto, G.
- Cooper, S.
- Cowan, R.
- Coyne, D. G.
- Drews, G.
- Edwards, C.
- Engler, A.
- Besset, D.
- Folger, G.
- Fridman, A.
- Gaiser, J.
- Gelphman, D.
- Glaser, G.
- Godfrey, G.
- Heimlich, F. H.
- Hofstadter, R.
- Irion, J.
- Jakubowski, Z.
- Bieler, C.
- Karch, K.
- Kees, K. H.
- Keh, S.
- Kilian, H.
- Kirkbride, I.
- Kloiber, T.
- Kobel, M.
- Koch, W. S.
- Konig, A. C.
- Konigsmann, Kay
- Bienlein, J. K.
- Kraemer, R. W. S.
- Kruger, S.
- Landi, G.
- Lee, Roger A.
- Leffler, S.
- Lekebusch, R.
- Litke, A.
- Lockman, William S.
- Lowe, S.
- Lurz, B.
- Bizzeti, A.
- Marlow, Daniel R.
- Marsiske, H.
- Maschmann, W. S.
- Matsui, T.
- McBride, P.
- Messing, F.
- Metzger, W. J.
- Meyer, H.
- Monteleoni, B.
- Nernst, R.
- Bloom, Elliott D.
- Niczyporuk, B.
- Nowak, G.
- Peck, C.
- Pelfer, P. G.
- Pollock, B.
- Porter, F.
- Prindle, D.
- Ratoff, P.
- Renger, B.
- Rippich, C.
- Brock, I.
- Scheer, M.
- Schmitt, P.
- Schotanus, J.
- Schwarz, Andreas S.
- Selonke, F.
- Sievers, D.
- Skwarnicki, T.
- Stock, V.
- Strauch, K.
- Strohbusch, U.
- Brockmuller, K.
- Tompkins, J.
- Trost, H. J.
- Van de Walle, R. T.
- Vogel, H.
- Voigt, A.
- Volland, U.
- Wachs, K.
- Wacker, K.
- Walk, W. S.
- Wegener, H.
- Cabenda, R.
- Williams, D.
- Zschorsch, P.
- Crystal Ball Collaboration
DOIAbstract
The reaction e+e−→e+e−ηπ0π0 has been observed with the Crystal Ball detector at the DORIS II storage ring at DESY. The ηπ0π0 mass spectrum is dominated by the η’, and the two-photon width Γη’→γγ is determined to be 4.6±0.4±0.6 keV. Limits on ΓX→γγ×BX→ηππ are given for other possible states
Add to ORKG