Department of Physics, University of Surrey, Guildford, Surrey GU2 5XH, UK;Department of Physics, University of Birmingham, Birmingham BI5 2TT, UK;Rutherford Appleton Laboratory, Chilton, Didcot, Oxon 0X11 0QX, UK
Abstract:
The X-ray spectrum obtained with kaons stopping in liquid hydrogen has been measured. Possible candidates for X-ray lines from kaonic hydrogen atoms have been identified and the results compared with previous experiments and with theoretical predictions. X-ray lines from σ?p atoms may also have been observed.