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Measurements of Strong-Interaction Effects in Kaonic-Helium Isotopes at Sub-eV Precision with X-Ray Microcalorimeters

Hashimoto, T. ; Okada, S. ; Tatsuno, H. LU ; Uhlig, J. LU and Zmeskal, J. (2022) In Physical Review Letters 128(11).
Abstract
We have measured the 3d→2p transition x rays of kaonic 3He and 4He
atoms using superconducting transition-edge-sensor microcalorimeters
with an energy resolution better than 6 eV (FWHM). We determined the
energies to be 6224.5±0.4(stat)±0.2(syst)  eV and 6463.7±0.3(stat)±0.1(syst)  eV, and widths to be 2.5±1.0(stat)±0.4(syst)  eV and 1.0±0.6(stat)±0.3(stat)  eV, for kaonic 3He and 4He,
respectively. These values are nearly 10 times more precise than in
previous measurements. Our results exclude the large strong-interaction
shifts and widths that are suggested by a coupled-channel approach and
agree with calculations based on optical-potential models.
Please use this url to cite or link to this publication:
author
; ; ; and
author collaboration
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Letters
volume
128
issue
11
article number
112503
pages
6 pages
publisher
American Physical Society
external identifiers
  • scopus:85126960245
  • pmid:35363014
ISSN
1079-7114
DOI
10.1103/PhysRevLett.128.112503
language
English
LU publication?
yes
id
cfb56937-315c-41a4-a947-d3b5df22e459
date added to LUP
2022-03-28 12:44:01
date last changed
2023-12-07 19:31:03
@article{cfb56937-315c-41a4-a947-d3b5df22e459,
  abstract     = {{We have measured the 3d→2p transition x rays of kaonic 3He and 4He<br>
 atoms using superconducting transition-edge-sensor microcalorimeters <br>
with an energy resolution better than 6 eV (FWHM). We determined the <br>
energies to be 6224.5±0.4(stat)±0.2(syst)  eV and 6463.7±0.3(stat)±0.1(syst)  eV, and widths to be 2.5±1.0(stat)±0.4(syst)  eV and 1.0±0.6(stat)±0.3(stat)  eV, for kaonic 3He and 4He,<br>
 respectively. These values are nearly 10 times more precise than in <br>
previous measurements. Our results exclude the large strong-interaction <br>
shifts and widths that are suggested by a coupled-channel approach and <br>
agree with calculations based on optical-potential models.}},
  author       = {{Hashimoto, T. and Okada, S. and Tatsuno, H. and Uhlig, J. and Zmeskal, J.}},
  issn         = {{1079-7114}},
  language     = {{eng}},
  number       = {{11}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Letters}},
  title        = {{Measurements of Strong-Interaction Effects in Kaonic-Helium Isotopes at Sub-eV Precision with X-Ray Microcalorimeters}},
  url          = {{http://dx.doi.org/10.1103/PhysRevLett.128.112503}},
  doi          = {{10.1103/PhysRevLett.128.112503}},
  volume       = {{128}},
  year         = {{2022}},
}