کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1837298 | 1527139 | 2012 | 19 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
First observation of the hyper superheavy hydrogen HÎ6
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Three candidate events of the neutron-rich hypernucleus HÎ6 were uniquely identified in the FINUDA experiment at DAΦNE, Frascati, by observing Ï+ mesons from the (Kstopâ,Ï+) production reaction on 6Li targets, in coincidence with Ïâ mesons from HÎ6âHe6+Ïâ weak decay. Details of the experiment and the analysis of its data are reported, leading to an estimate of (2.9±2.0)â
10â6/Kstopâ for the HÎ6 production rate times the two-body Ïâ weak decay branching ratio. The HÎ6 binding energy with respect to H5+Î was determined jointly from production and decay to be BÎ=(4.0±1.1) MeV, assuming that 5H is unbound with respect to H3+2n by 1.7 MeV. The binding energy determined from production is higher, in each one of the three events, than that determined from decay, with a difference of (0.98±0.74) MeV here assigned to the 0g.s.+â1+ excitation. The consequences of this assignment to Î hypernuclear dynamics are briefly discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Physics A - Volume 881, 1 May 2012, Pages 269-287
Journal: Nuclear Physics A - Volume 881, 1 May 2012, Pages 269-287
نویسندگان
M. Agnello, L. Benussi, M. Bertani, H.C. Bhang, G. Bonomi, E. Botta, M. Bregant, T. Bressani, S. Bufalino, L. Busso, D. Calvo, P. Camerini, B. Dalena, F. De Mori, G. DʼErasmo, F.L. Fabbri, A. Feliciello, A. Filippi, A. Gal,