Measurements of high-n transitions in intermediate mass kaonic atoms by SIDDHARTA-2 at DA$$\mathrm {\Phi }$$NE

Sgaramella, Francesco; Tüchler, M.; Amsler, C.; Bosnar, D.; Bragadireanu, M.; Cargnelli, M.; Carminati, Marco; Clozza, A.; Deda, G.; Grande, R. Del; Paolis, L. De; Fabbietti, L.; Fiorini, C.; Friščić, I.; Guaraldo, C.; Iliescu, M.; Iwasaki, M.; Khreptak, A.; Manti, Simone; Márton, J.; Miliucci, M.; Moskal, P.; Napolitano, F.; Niedźwiecki, Szymon; Ohnìshì, H.; Piscicchia, K.; Sada, Y.; Scordo, A.; Shi, H.; Silarski, M.; Sirghi, D.; Sirghi, F.; Skurzok, M.; Spallone, A.; Toho, K.; Doce, O. Vázquez; Widmann, E.; Yoshida, Chihiro; Zmeskal, J.; Curceanu, C.

doi:10.1140/epja/s10050-023-00976-y

Cited by 5 publications

(3 citation statements)

References 45 publications

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“…Additionally, the x-rays lines corresponding to kaonic carbon, oxygen, nitrogen and aluminium, generated by kaons stopped in the apparatus support frame and in the kapton window of the target cell, are also detected. The measurements and a detailed investigation of these lines are reported in [30].…”

Section: Data Analysis Results and Discussionmentioning

confidence: 99%

First measurement of kaonic helium-4 M-series transitions

Sgaramella,

Sirghi,

Abbene

et al. 2024

J. Phys. G: Nucl. Part. Phys.

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In this paper we present the results of a new kaonic helium-4 measurement with a 1.37 g/l gaseous target by the SIDDHARTA-2 experiment at the DAΦNE collider. We measured, for the first time, the energies and yields of three transitions belonging to the M-series. Moreover, we improved by a factor about three, the statistical precision of the 2p level energy shift and width induced by the strong interaction, obtaining the most precise measurement for gaseous kaonic helium, and measured the yield of the Lα transition at the employed density, providing a new experimental input to investigate the density dependence of kaonic atoms transitions yield.

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Section: Data Analysis Results and Discussionmentioning

confidence: 99%

First measurement of kaonic helium-4 M-series transitions

Sgaramella,

Sirghi,

Abbene

et al. 2024

J. Phys. G: Nucl. Part. Phys.

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“…To reduce the background events, we also acquired the events from the LM-TAC. The TAC signals were used to select only events related to a K+ K− pair passed through the two scintillators of the LM [9]. Figure 16 shows the TAC spectrum, where the blue and red peaks are related to kaons and MIPs, respectively.…”

Section: Measurements At the Daϕne Collidermentioning

confidence: 99%

“…Despite intense research activities on kaonic atom X-ray measurements in the 1970s and 1980s [4][5][6], more accurate and precise measurements are necessary to better study kaon-nucleus/nucleon interactions. From the 2000s, key results have been obtained within DEAR (DAΦNE Exotic Atoms Research) [7], SIDDHARTA (Silicon Drift Detectors for Hadronic Atom Research by Timing Application), [8] and SIDDHARTA-2 [9] experiments at the DAΦNE (Double Annular Φ Factory for Nice Experiments) collider at the INFN National Laboratories of Frascati (Italy). The DAΦNE electron-positron collider is an ideal facility for kaonic atom physics that is able to produce low-momentum (∼127 MeV/c) and quasi-monoenergetic kaons through the decay of the φ resonance from electron-positron annihilation.…”

Section: Introductionmentioning

confidence: 99%

Potentialities of CdZnTe Quasi-Hemispherical Detectors for Hard X-ray Spectroscopy of Kaonic Atoms at the DAΦNE Collider

Abbene,

Buttacavoli,

Principato

et al. 2023

Sensors

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Kaonic atom X-ray spectroscopy is a consolidated technique for investigations on the physics of strong kaon–nucleus/nucleon interaction. Several experiments have been conducted regarding the measurement of soft X-ray emission (<20 keV) from light kaonic atoms (hydrogen, deuterium, and helium). Currently, there have been new research activities within the framework of the SIDDHARTA-2 experiment and EXCALIBUR proposal focusing on performing precise and accurate measurements of hard X-rays (>20 keV) from intermediate kaonic atoms (carbon, aluminum, and sulfur). In this context, we investigated cadmium–zinc–telluride (CdZnTe or CZT) detectors, which have recently demonstrated high-resolution capabilities for hard X-ray and gamma-ray detection. A demonstrator prototype based on a new cadmium–zinc–telluride quasi-hemispherical detector and custom digital pulse processing electronics was developed. The detector covered a detection area of 1 cm2 with a single readout channel and interesting room-temperature performance with energy resolution of 4.4% (2.6 keV), 3% (3.7 keV), and 1.4% (9.3 keV) FWHM at 59.5, 122.1, and 662 keV, respectively. The results from X-ray measurements at the DAΦNE collider at the INFN National Laboratories of Frascati (Italy) are also presented with particular attention to the effects and rejection of electromagnetic and hadronic background.

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Kaonic atoms with SIDDHARTA-2 at the DAΦNE collider

Sirghi,

Abbene,

Bazzi

et al. 2024

EPJ Web Conf.

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The most important information still missing in the field of the low-energy antikaon-nucleon inter actions studies is the experimental determination of the hadronic energy shift and width of kaonic deuterium. This measurement will be performed by the SIDDHARTA-2 experiment, installed at the DAΦNE collider and presently in data taking campaign. The precise measurement of the shift and width of the 1s level with respect to the purely electromagnetic calculated values, generated by the presence of the strong interaction, through the measurement of the X-ray transitions to this level, in kaonic hydrogen, was performed by the SIDDHARTA collaboration, the kaonic deuterium is underway by SIDDHARTA-2. These measurement will allow the first precise experimental extraction of the isospin dependent antikaon-nucleon scattering lengths, funda mental quantities for understanding low-energy QCD in the strangeness sector. The experimental challenge of the kaonic deuterium measurement is the very small X-rays yield, the even larger width (compared to kaonic hy drogen), and the difficulty to perform X-rays spectroscopy with weak signals in the high radiation environment of DAΦNE. It was, therefore, crucial to develop a new apparatus involving large-area X-rays detector system, to optimize the signal and to control and by improve the signal-to-background ratio by gaining in solid angle, increasing the timing capability, and as well implementing additional charge particle tracking veto systems.

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Measurements of high-n transitions in intermediate mass kaonic atoms by SIDDHARTA-2 at DA$$\mathrm {\Phi }$$NE

Cited by 5 publications

References 45 publications

First measurement of kaonic helium-4 M-series transitions

First measurement of kaonic helium-4 M-series transitions

Potentialities of CdZnTe Quasi-Hemispherical Detectors for Hard X-ray Spectroscopy of Kaonic Atoms at the DAΦNE Collider

Kaonic atoms with SIDDHARTA-2 at the DAΦNE collider

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