Kaonic 3He and 4He X-ray measurements in SIDDHARTA

被引：1

作者：

Ishiwatari, Tomoichi ^{[1
]}

Bazzi, M. ^{[2
]}

Beer, G. ^{[3
]}

Berucci, C. ^{[2
]}

Bombelli, L. ^{[4
]}

Bragadireanu, A. M. ^{[2
,5
]}

Cargnelli, M. ^{[1
]}

Clozza, A. ^{[2
]}

Corradi, G. ^{[2
]}

Curceanu , C. ^{[2
]}

d'Uffizi, A. ^{[2
]}

Fiorini, C. ^{[4
]}

Ghio, F. ^{[6
,7
]}

Girolami, B. ^{[6
,7
]}

Guaraldo, C. ^{[2
]}

Hayano, R. S. ^{[8
]}

Iliescu, M. ^{[2
,5
]}

Iwasaki, M. ^{[9
]}

Kienle, P. ^{[10
]}

Sandri, P. Levi ^{[2
]}

Lucherini, V. ^{[2
]}

Marton, J. ^{[1
]}

Okada, S. ^{[2
]}

Pietreanu, D. ^{[5
]}

Piscicchia, K. ^{[2
]}

Lener, M. Poli ^{[2
]}

Ponta, T. ^{[5
]}

Quaglia, R. ^{[4
]}

Rizzo, A. ^{[2
]}

Vidal, A. Romero ^{[2
]}

Sbardella, E. ^{[2
]}

Scordo, A. ^{[2
]}

Shi, H. ^{[8
]}

Sirghi, D. L. ^{[2
,5
]}

Sirghi, F. ^{[2
,5
]}

Tatsuno, H. ^{[2
]}

Tudorache, A. ^{[5
]}

Tudorache, V. ^{[5
]}

Doce, O. Vazquez ^{[2
]}

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, Dept 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

来源：

HYPERFINE INTERACTIONS | 2012年 / 209卷 / 1-3期

基金：

奥地利科学基金会;

关键词：

Kaonic helium; Silicon drift detectors; X-ray spectroscopy;

D O I：

10.1007/s10751-011-0552-9

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

The SIDDHARTA experiment measured the kaonic He-3 and He-4 3d -> 2p X-ray transitions using gaseous targets for the first time. The strong-interaction shift both of the kaonic He-3 and He-4 2p states was determined with a precision of a few eV. The shift of kaonic He-4 is much smaller than the values obtained in the experiments performed in 70's and 80's, while it is consistent with the recent result of the KEK E570 experiment, as well as the theoretical calculated values. Therefore, the problem on kaonic helium (the "kaonic helium puzzle") was definitely solved. The first observation of the kaonic He-3 X-rays was also achieved in the SIDDHARTA experiment. The shift both of kaonic He-3 and He-4 was found to be as small as a few eV.

引用

页码：139 / 143

页数：5

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