Measurement of the strong interaction induced shift and width of the 1s state of kaonic deuterium at J-PARC

Zmeskal, J. and Sato, M. and Ajimura, S. and Bazzi, M. and Beer, G. and Berucci, C. and Bhang, H. and Bosnar, Damir and Bragadireanu, M. and Buehler, P. and Busso, L. and Cargnelli, M. and Choi, S. and Clozza, A. and Curceanu, C. and D'Uffizi, A. and Enomoto, S. and Fabbietti, L. and Faso, D. and Fiorini, C. and Fujioka, H. and Ghio, F. and Golser, R. and Guaraldo, C. and Hashimoto, T. and Hayano, R. S. and Hiraiwa, T. and Iio, M. and Iliescu, M. and Inoue, K. and Ishimoto, S. and Ishiwatari, T. and Itahashi, K. and Iwai, M. and Iwasaki, M. and Kawasaki, S. and Lachner, J. and Sandri, P. Levi and Ma, Y. and Marton, J. and Matsuda, Y. and Mizoi, Y. and Morra, O. and Moskal, P. and Nagae, T. and Noumi, H. and Ohnishi, H. and Okada, S. and Outa, H. and Pietreanu, D. and Piscicchia, K. and Lener, M. Poli and Romero Vidal, A. and Sada, Y. and Sakaguchi, A. and Sakuma, F. and Sbardella, E. and Scordo, A. and Sekimoto, M. and Shi, H. and Silarski, M. and Sirghi, D. and Sirghi, F. and Suzuki, K. and Suzuki, S. and Suzuki, T. and Tanida, K. and Tatsuno, H. and Tokuda, M. and Toyoda, A. and Tucakovic, I. and Tsukada, K. and Doce, O. Vazquez and Widmann, E. and Yamaga, T. and Yamazaki, T. and Zhang, Q. (SIDDHARTA Collaboration) (2015) Measurement of the strong interaction induced shift and width of the 1s state of kaonic deuterium at J-PARC. Acta Physica Polonica B, 46 (1). pp. 101-112. ISSN 0587-4254

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The antikaon–nucleon (KN) interaction close to threshold provides crucial information on the interplay between spontaneous and explicit chiral symmetry breaking in low-energy QCD. In this context, the importance of kaonic deuterium X-ray spectroscopy has been well recognized, but no experimental results have yet been obtained due to the difficulty of the measurement. We propose to measure the shift and width of the kaonic deuterium 1s state with an accuracy of 60 eV and 140 eV, respectively, at J-PARC. These results, together with the kaonic hydrogen data (KpX at KEK, DEAR and SIDDHARTA at DAΦNE), will then permit the determination of values of both the isospin I = 0 and I = 1 antikaon–nucleon scattering lengths and will provide the most stringent constraints on the antikaon–nucleon interaction, promising a breakthrough. Refined Monte Carlo studies were performed, including the investigation of background suppression factors for the described setup. These studies have demonstrated the feasibility of determining the shift and width of the kaonic deuterium atom 1s state with the desired accuracy of 60 eV and 140 eV.

Item Type: Article
Date: January 2015
Subjects: NATURAL SCIENCES > Physics
Divisions: Faculty of Science > Department of Physics
Publisher: Jagiellonian University
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 26 Mar 2017 20:14
Last Modified: 26 Mar 2017 20:14

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