Two-prong ¦ÐHe interactions at 106 MeV
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- 作者：N. Angelov ; S. Baginyan ; F. Balestra ; Yu. Batusov ; I. Belolaptikov ; A. Bianconi ; T. Blokhintseva ; A. Bonyushkina ; V. Butenko and M. Chiosso ; et al.
- 关键词：PACS. 13.75.Gx Pion ; baryon interactions ; 21.65.+f Nuclear matter ; 24.85.+p Quarks ; gluons ; and QCD in nuclei and nuclear processes ; 25.75.Dw Particle and resonance production
- 刊名：The European Physical Journal A - Hadrons and Nuclei
- 出版年：2007
- 出版时间：December, 2007
- 年：2007
- 卷：34
- 期：3
- 页码：255-269
- 全文大小：1.5 MB
文摘
π-4He interactions at 106MeV, with two secondary charged particles in the final state, have been studied using a self-shunted streamer chamber in a 0.65T magnetic field and equipped with two CCD videocameras for obtaining digitized stereo-images of nuclear events occurring within the fiducial volume of the streamer chamber. Branching ratios for the various interaction channels are deduced. Evidence is presented for a reaction channel involving a γ produced in the final state, as well as for the first observation of direct Δ- -resonance production. Cross-section distributions for the elastic and quasi-elastic interaction channels are also reported.