First results on kaonic hydrogen from the DEAR experiment
Creators
- Guaraldo, C.1
- Beer, G.2
- Bragadireanu, A. M.1, 3
- Cargnelli, M.
- Curceanu, C.1, 3
- Egger, J.-P.4, 5
- Fuhrman, H.
- Iliescu, M.1, 3
- Ishiwatari, T.
- Itahashi, K.
- Iwasaki, M.6
- Lauss, B.7
- Lucherini, V.1
- Ludhova, L.4
- Marton, J.
- Mulhauser, F.4
- Ponta, T.1, 3
- Schaller, L. A.4
- Seki, R.8, 9
- Sirghi, D.3
- Sirghi, F.1
- Strasser, P.6
- Zmeskal, J.
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1.
National Laboratory of Frascati
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2.
University of Victoria
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3.
Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering
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4.
University of Fribourg
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5.
University of Neuchâtel
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6.
RIKEN
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7.
University of California, Berkeley
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8.
California Institute of Technology
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9.
California State University, Northridge
Contributors
Abstract
The objective of DEAR (DAφNE Exotic Atom Research) is the measurement of the K_a line shift and width, due to the strong interaction, in kaonic hydrogen and a similar measurement — the first one — in kaonic deuterium. The aim is a precision determination of the antikaon-nucleon isospin dependent scattering lengths in order to obtain the kaon nucleon sigma terms. In a first phase, dedicated to the calibration and optimization of the setup, the experiment collected data on kaonic nitrogen: for the first time a complex of three transitions (7 → 6 at 4.6 keV, 6 → 5 at 7.6 keV and 5→ 4 at 14 keV) was measured, and the corresponding yields obtained. The kaonic hydrogen measurement was performed for a total integrated luminosity of about 60 pb-1 in the last months of the 2002 year. Data analyses are in progress, preliminary results being hereby presented, together with those on kaonic nitrogen.
Additional Information
© 2004 Springer-Verlag Berlin Heidelberg. Received: 29 Jul 2003; Accepted: 14 Nov 2003. The DAΦNE group in warmy acknowledged for the very good cooperation and team-work. Part of the work was supported by a "Transnational access to Research Infrastructure" (TARI) Contract No. HPRI-CT-1999-00088.Additional details
Identifiers
- Eprint ID
- 101976
- Resolver ID
- CaltechAUTHORS:20200318-133758171
Funding
- Transnational access to Research Infrastructure
- HPRI-CT-1999-00088
Dates
- Created
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2020-03-18Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field