Study of decay and absorption of the Δ resonance in nuclei with a 4π detector

• Published in: Physics letters. B Vol. 283; no. 1; pp. 42 - 46
• Main Authors: Hennino, T., Ramstein, B., Bachelier, D., Bohlen, H.G., Boyard, J.L., Ellegaard, C., Gaarde, C., Gosset, J., Jourdain, J.C., Larsen, J.S., Lemaire, M.C., L'Hôte, D., Morsch, H.P., Österlund, M., Poitou, J., Radvanyi, P., Roy-Stephan, M., Sams, T., Sneppen, K., Valette, O., Zupranski, P.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 04.06.1992; Elsevier
• Subjects: High Energy Physics - Experiment; Physics
• ISSN: 0370-2693; 1873-2445
• DOI: 10.1016/0370-2693(92)91423-7

We present data on the decay of the Δ resonance excited in 1H, 2H and 12C by the ( 3He, t) reaction at 2 GeV incident energy. In the energy transfer spectra, the same position and width of the Δ resonance are observed on the three targets when π + and one proton are detected in coincidence with the triton. On the 12C target, the Δ peak associated with the detection of two protons is shifted by 100 MeV towards lower excitation energy.