Precision Spectroscopy of Kaonic Atoms at DAΦNE

S. Okada^1a, M. Bazzi¹, G. Beer², L. Bombelli³, A.M. Bragadireanu^1,4, M. Cargnelli⁵, G. Corradi¹, C. Curceanu (Petrascu)¹, A. d’Uffizi¹, C. Fiorini³, T. Frizzi³, F. Ghio⁶, B. Girolami⁶, C. Guaraldo¹, R.S. Hayano⁷, M. Iliescu^1,4, T. Ishiwatari⁵, M. Iwasaki⁸, P. Kienle^5,9, P. Levi Sandri¹, A. Longoni³, V. Lucherini¹, J. Marton⁵, D. Pietreanu¹, T. Ponta⁴, A. Rizzo¹, A. Romero Vidal¹, A. Scordo¹, H. Shi⁷, D.L. Sirghi^1,4, F. Sirghi^1,4, H. Tatsuno⁷, A. Tudorache⁴, V. Tudorache⁴, O. Vazquez Doce¹, E. Widmann⁵ and J. Zmeskal⁵

¹ INFN, Laboratori Nazionali di Frascati, ( Frascati Roma), Italy
² Dep. of Phys. and Astro., Univ. of Victoria, Victoria B.C., Canada
³ Politechno di Milano, Sez. di Elettronica, Milano, Italy
⁴ IFIN-HH, Magurele, Bucharest, Romania
⁵ Stefan-Meyer-Institut für subatomare Physik, Vienna, Austria
⁶ INFN Sez. di Roma I and Inst. Superiore di Sanita, Roma, Italy
⁷ Univ. of Tokyo, Tokyo, Japan
⁸ RIKEN, The Inst. of Phys. and Chem. Research, Saitama, Japan
⁹ Tech. Univ. München, Physik Dep., Garching, Germany

^a e-mail: shinji.okada@lnf.infn.it

Published online: 12 April 2010

Abstract

The SIDDHARTA experiment aims at a precise measurement of K -series kaonic hydrogen x-rays and the first-ever measurement of the kaonic deuterium x-rays to determine the strong-interaction energy-level shift and width of the lowest lying atomic states. These measurements offer a unique possibility to precisely determine the isospin-dependent -nucleon scattering lengths.