Measurement of [formula omitted] in the S11 resonance

• Published in: Physics letters. B Vol. 472; no. 3; pp. 267 - 272
• Main Authors: Betigeri, M., Bojowald, J., Budzanowski, A., Chatterjee, A., Drochner, M., Ernst, J., Förtsch, S., Freindl, L., Frekers, D., Garske, W., Grewer, K., Hamacher, A., Igel, S., Ilieva, J., Jahn, R., Jarczyk, L., Kemmerling, G., Kilian, K., Kliczewski, S., Klimala, W., Kolev, D., Kutsarova, T., Lieb, J., Lippert, G., Machner, H., Magiera, A., Nann, H., Pentchev, L., Plendl, H.S., Protic̀, D., Razen, B., von Rossen, P., Roy, B.R., Siudak, R., Smyrski, J., Strzałkowski, A., Tsenov, R., Żołnierczuk, P.A., Zwoll, K.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 2000
• ISSN: 0370-2693; 1873-2445
• DOI: 10.1016/S0370-2693(99)01456-2

We have measured the reaction p d→ 3 He η at a proton beam energy of 980 MeV, which is 88.5 MeV above threshold using the new `germanium wall' detector system. A missing-mass resolution of the detector system of 2.6% was achieved. The angular distribution of the meson is forward peaked. We found a total cross section of (573 ± 83 (stat.) ± 69 (syst.)) nb. The excitation function for the present reaction is described by a Breit Wigner form with parameters from photoproduction.