Precision measurement of the $3d\to 2p$ x-ray energy in kaonic ${}^4$He

Abstract

We have measured the Balmer-series x-rays of kaonic ${}^4$He atoms using novel large-area silicon drift x-ray detectors in order to study the low-energy $\bar{K}$-nucleus strong interaction. The energy of the $3d\to 2p$ transition was determined to be 6467 $\pm$ 3 (stat) $\pm$ 2 (syst) eV. The resulting strong-interaction energy-level shift is in agreement with theoretical calculations, thus eliminating a long-standing discrepancy between theory and experiment.

arXiv comment12 pages, 4 figues, submitted to Physics Letters B

References in corpus (4)

• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• The Cosmological Parameters 2006
• $\bar{K}$ nuclear bound states in a dynamical model
• X-ray energies of circular transitions and electrons screening in kaonic atoms

Cited by in corpus (24)

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• Meson-nucleus potentials and the search for meson-nucleus bound states
• First measurement of kaonic helium-3 X-rays
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• Absolute Energy Calibration of X-ray TESs with 0.04 eV Uncertainty at 6.4 keV in a Hadron-Beam Environment
• $\bar{K}NN$ Absorption within the Framework of the Fixed Center Approximation to Faddeev equations
• Hadron Physics at J-PARC
• Kaonic atoms and in-medium $K^{-}N$ amplitudes
• Experimental search for the violation of Pauli Exclusion Principle
• Measurement of the strong interaction induced shift and width of the 1s state of kaonic deuterium at J-PARC
• A new kaonic helium measurement in gas by SIDDHARTINO at the DAΦNE collider
• The K1.8BR spectrometer system at J-PARC
• The SIDDHARTA-2 calibration method for high precision kaonic atoms X-ray spectroscopy measurements
• Future directions in kaonic atom physics
• New opportunities for kaonic atoms measurements from CdZnTe detectors
• High-resolution kaonic-atom x-ray spectroscopy with transition-edge-sensor microcalorimeters
• Measurements of high-n transitions in intermediate mass kaonic atoms by SIDDHARTA-2 at DA$\mathrm{\Phi }$NE
• Development of liquid helium-3 target for experimental studies of antikaon-nucleon interaction at J-PARC
• Precision X-ray spectroscopy of kaonic atoms as a probe of low-energy kaon-nucleus interaction
• First measurement of kaonic helium-4 M-series transitions
• The kaonic atoms research program at DAΦNE: from SIDDHARTA to SIDDHARTA-2
• Kaonic 3He and 4He X-ray measurements in SIDDHARTA
• Low-energy QCD and hadronic structure