The DEAR case

C. Guaraldo, S. Bianco, A. M. Bragadireanu, F. L. Fabbri, M. Iliescu, T. M. Ito, V. Lucherini, C. Petrascu, M. Bregant, E. Milotti, A. Vacchi, E. Zavattini, M. Augsburger, D. Chatellard, P. Knowles, F. Mulhauser, L. A. Schaller, L. Schellenberg, H. Schneuwly, J. P. EggerD. Varidel, W. H. Breunlich, M. Cargnelli, B. Gartner, R. King, B. Lauss, J. Marton, J. Zmeskal, T. Ponta, S. N. Nakamura, T. Koike, R. S. Hayano, M. Hori, T. Ishikawa, T. Ishiwatari, M. Iwasaki, Y. Akaishi, G. Beer, A. C. Sanderson, R. Seki

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


The scientific program and the experimental setup of the DEAR (DAΦNE Exotic Atom Research) experiment at the new φ-factory DAΦNE of Laboratori Nazionali di Frascati are described. The objective of DEAR is to perform a 1% measurement of the Kα line shift due to the strong interaction in kaonic hydrogen. A measurement will also be performed on kaonic deuterium for the first time. The aim is to investigate low-energy K̄N physics and to understand SU(3) chiral symmetry breaking. The setup takes advantage of the unique features of the "kaon beam" from the φ decay in DAΦNE; of a low-temperature pressurized gaseous target; and of a detector for soft X-rays - the Charge-Coupled Device (CCD) - characterized by a very good energy (and spatial) resolution and by an unprecedented background rejection capability. The DEAR experiment represents a major effort in the study of low energy K̄N interactions and has the potential to produce a breakthrough in the field.

Original languageEnglish
Pages (from-to)253-261
Number of pages9
JournalHyperfine Interactions
Issue number1-4
Publication statusPublished - 1999
Externally publishedYes


  • Exotic atom
  • Kaonic hydrogen

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry


Dive into the research topics of 'The DEAR case'. Together they form a unique fingerprint.

Cite this