Measurement of the Kaonic Hydrogen X-Ray Spectrum

2005239 citationsJournal Article

Authors

G. Beer · University of Victoria

A.M. Bragadireanu · Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati

M. Cargnelli · Stefan Meyer Institute for Subatomic Physics

C. Curceanu-Petrascu · Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati

J.‐P. Egger · University of Neuchâtel

H. Fuhrmann · Austrian Academy of Sciences

C. Guaraldo

Abstract

The DEAR (DAPhiNE exotic atom research) experiment measured the energy of x rays emitted in the transitions to the ground state of kaonic hydrogen. The measured values for the shift epsilon and the width Gamma of the 1s state due to the K(-)p strong interaction are epsilon(1s)=-193 +/- 37 (stat) +/- 6 (syst) eV and Gamma(1s)=249 +/- 111 (stat) +/- 30 (syst) eV, the most precise values yet obtained. The pattern of the kaonic hydrogen K-series lines, K(alpha), K(beta), and K(gamma), was disentangled for the first time.

Topics & Keywords

Ionosphere and magnetosphere dynamics High-pressure geophysics and materials Earthquake Detection and Analysis

Publication Details

Published in: Physical Review Letters

Volume 94, Issue 21, pp. 212302-212302

DOI: 10.1103/physrevlett.94.212302

Field-Weighted Citation Impact: 14.85

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Measurement of the Kaonic Hydrogen X-Ray Spectrum

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Publication Details