Kaonic atoms measurements at the DAΦNE collider: the SIDDHARTA-2 experiment
1 INFN, Laboratori Nazionali di Frascati, Frascati, 00044 Roma, Italy
2 Department of Physics, Faculty of Science, University of Zagreb, 10000 Zagreb, Croatia
3 Horia Hulubei National Institute of Physics and Nuclear Engineering, IFIN-HH, Magurele 077125, Romania
4 Politecnico di Milano, Dipartimento di Elettronica, Informazione e Bioingegneria and INFN Sezione di Milano, 20133 Milano, Italy
5 Stefan-Meyer-Institut für Subatomare Physik, 1090 Vienna, Austria
6 Excellence Cluster Universe, Technische Universität München - Garching, Germany
7 RIKEN - Tokyo, Japan
8 The M. Smoluchowski Institute of Physics, Jagiellonian University, 30-348 Kraków, Poland
9 Centro Ricerche Enrico Fermi - Museo Storico della fisica e Centro Studi e Ricerche "Enrico Fermi", 00184 Roma, Italy
* e-mail: μmarco.firstname.lastname@example.org
Published online: 11 January 2022
The X-ray spectroscopy measurements of light kaonic atoms’ deexcitation towards the fundamental level provide unique information on the low-energy Quantum ChromoDynamics (QCD) in the strangeness sector, being a direct probe of the kaon/nucleon interaction at threshold, unobtainable through the scattering experiments. In this framework, the SIDDHARTA-2 collaboration is going to perform the first kaonic deuterium 2p → 1s transition measurement at the DAΦNE collider of Istituto Nazionale di Fisica Nucleare – Laboratori Nazionali di Frascati. Combining this measurement with the kaonic hydrogen one performed by SIDDHARTA in 2009 it will be possible to obtain, in a model-independent way, the isospin-dependent antikaon-nucleon scattering lengths. The paper introduces the SIDDHARTA-2 setup, an upgraded version with respect to the one used for the kaonic hydrogen measurement, dedicated to the ambitious kaonic deuterium measurement, together with the preliminary results obtained during the kaonic helium run, preparatory for the SIDDHARTA-2 data taking campaign.
© The Authors, published by EDP Sciences, 2022
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