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

T. Hashimoto; S. Okada; H. Tatsuno; J. Uhlig; J. Zmeskal; et al.

doi:10.1103/PhysRevLett.128.112503

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

T. Hashimoto, S. Okada, H. Tatsuno, J. Uhlig, J. Zmeskal, et al.

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Article number	112503
Number of pages	6
Journal	Physical Review Letters
Volume	128
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevLett.128.112503
Publication status	Published - 2022

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Subatomic Physics

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10.1103/PhysRevLett.128.112503

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

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.",

author = "T. Hashimoto and S. Okada and H. Tatsuno and J. Uhlig and J. Zmeskal and \{et al.\}",

year = "2022",

doi = "10.1103/PhysRevLett.128.112503",

language = "English",

volume = "128",

journal = "Physical Review Letters",

issn = "1079-7114",

publisher = "American Physical Society",

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TY - JOUR

T1 - Measurements of Strong-Interaction Effects in Kaonic-Helium Isotopes at Sub-eV Precision with X-Ray Microcalorimeters

AU - Hashimoto, T.

AU - Okada, S.

AU - Tatsuno, H.

AU - Uhlig, J.

AU - Zmeskal, J.

AU - et al.

PY - 2022

Y1 - 2022

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/85126960245

U2 - 10.1103/PhysRevLett.128.112503

DO - 10.1103/PhysRevLett.128.112503

M3 - Article

C2 - 35363014

SN - 1079-7114

VL - 128

JO - Physical Review Letters

JF - Physical Review Letters

IS - 11

M1 - 112503

ER -

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

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