Strong-interaction shifts and widths of kaonic helium isotopes

被引:2
|
作者
Ishiwatari, T. [1 ]
Bazzi, M. [2 ]
Beer, G. [3 ]
Bombelli, L. [4 ]
Bragadireanu, A. M. [2 ,5 ]
Cargnelli, M. [1 ]
Curceanu, C. [2 ]
d'Uffizi, A. [2 ]
Fiorini, C. [4 ]
Frizzi, T. [4 ]
Ghio, F. [6 ,7 ]
Guaraldo, C. [2 ]
Hayano, R. S. [8 ]
Iliescu, M. [2 ,5 ]
Iwasaki, M. [9 ]
Kienle, P. [10 ]
Sandri, P. Levi [2 ]
Longoni, A. [4 ]
Marton, J. [1 ]
Okada, S. [9 ]
Pietreanu, D. [2 ,5 ]
Ponta, T. [5 ]
Rizzo, A. [2 ]
Vidal, A. Romero [2 ]
Sbardella, E. [2 ]
Scordo, A. [2 ]
Shi, H. [8 ]
Sirghi, D. L. [2 ,5 ]
Sirghi, E. [2 ,5 ]
Tatsuno, H. [2 ]
Tudorache, A. [5 ]
Tudorache, V. [5 ]
Doce, O. Vazquez [10 ]
Widmann, E. [1 ]
Wuenschek, B. [1 ]
Zmeskal, J. [1 ]
机构
[1] Stefan Meyer Inst Subatomare Phys, Vienna, Austria
[2] Ist Nazl Fis Nucl, Lab Nazl Frascati, Rome, Italy
[3] Univ Victoria, Dep Phys & Astro, Victoria, BC, Canada
[4] Politechno Milano, Sez Elettron, Milan, Italy
[5] IFIN HH, Bucharest, Romania
[6] Ist Nazl Fis Nucl, Sez Roma 1, Rome, Italy
[7] Inst Super Sanita, Rome, Italy
[8] Univ Tokyo, Tokyo, Japan
[9] RIKEN, Inst Phys & Chem Res, Saitama, Japan
[10] Tech Univ Munich, Phys Dep, Garching, Germany
基金
奥地利科学基金会;
关键词
Exotic atoms; Kaonic helium; Silicon-drift detectors; Strong interaction; X-RAYS; ATOMS; HE-4;
D O I
10.1016/j.nuclphysa.2012.12.020
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
The kaonic He-3 and He-4 3d -> 2p transitions in gaseous targets were observed by the SIDDHARTA experiment. The X-ray energies of these transitions were measured with large-area silicon-drift detectors using the timing information of the K+K- pairs produced by the DA Phi NE e(+)e(-) collider. The strong-interaction shifts and widths both of the kaonic He-3 and He-4 2p states were determined, which are much smaller than the results obtained by the previous experiments. The "kaonic helium puzzle" (a discrepancy between theory and experiment) was now resolved. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码:305 / 309
页数:5
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