EPJ Web of Conferences (Mar 2014)

The yield of kaonic hydrogen X-rays in the SIDDHARTA experiment

  • Shi H.,
  • Bazzi M.,
  • Beer G.,
  • Berucci C.,
  • Bragadireanu A.M.,
  • Cargnelli M.,
  • Curceanu C.,
  • d’Uffizi A.,
  • Fiorini C.,
  • Ghio F.,
  • Guaraldo C.,
  • Hayano R.S.,
  • Iliescu M.,
  • Ishiwatari T.,
  • Iwasaki M.,
  • Kienle P.,
  • Levi Sandri P.,
  • Marton J.,
  • Okada S.,
  • Pietreanu D.,
  • Piscicchia K.,
  • Ponta T.,
  • Quaglia R.,
  • Romero Vidal A.,
  • Sbardella E.,
  • Scordo A.,
  • Sirghi D.L.,
  • Sirghi F.,
  • Tatsuno H.,
  • Vazquez Doce O.,
  • Widmann E.,
  • Zmeskal J.

DOI
https://doi.org/10.1051/epjconf/20146609016
Journal volume & issue
Vol. 66
p. 09016

Abstract

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We measured K-series kaonic hydrogen X-rays in the SIDDHARTA experiment performed at the DAΦNE electron-positron collider of Laboratori Nazionali di Frascati. With a gaseous hydrogen target of density 15 ρSTP, preliminary values of the absolute yields, defined as the number of atomic X-rays emitted per kaon stopped inside the target, were determined to be 0.012−0.004+0.003 for Kα transition and 0.045−0.012+0.009 for Ktot, the summation of all the emitted K-series transitions.