تقرير
Formation of a narrow baryon resonance with positive strangeness in K^+ collisions with Xe nuclei
| العنوان: | Formation of a narrow baryon resonance with positive strangeness in K^+ collisions with Xe nuclei |
|---|---|
| المؤلفون: | Barmin, V. V., Asratyan, A. E., Borisov, V. S., Curceanu, C., Davidenko, G. V., Dolgolenko, A. G., Guaraldo, C., Kubantsev, M. A., Larin, I. F., Matveev, V. A., Shebanov, V. A., Shishov, N. N., Sokolov, L. I., Tumanov, G. K., Verebryusov, V. S. |
| المصدر: | Phys.Atom.Nucl.73:1168-1175,2010 |
| سنة النشر: | 2009 |
| المجموعة: | High Energy Physics - Experiment |
| مصطلحات موضوعية: | High Energy Physics - Experiment |
| الوصف: | The data on the charge-exchange reaction K^+Xe --> K^0 p Xe, obtained with the bubble chamber DIANA, are reanalyzed using increased statistics and updated selections. Our previous evidence for formation of a narrow pK^0 resonance with mass near 1538 MeV is confirmed and reinforced. The statistical significance of the signal reaches some 8\sigma (6\sigma) when estimated as S/\sqrt{B} (S/\sqrt{B+S}). The mass and intrinsic width of the \Theta^+ baryon are measured as m = (1538+-2) MeV and \Gamma = (0.39+-0.10) MeV. Comment: 13 pages, 9 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1134/S1063778810070100 |
| الوصول الحر: | http://arxiv.org/abs/0909.4183Test |
| رقم الانضمام: | edsarx.0909.4183 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1134/S1063778810070100 |
|---|