First results on kaonic hydrogen from the DEAR experiment
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
- Eprint ID
- 101976
- Resolver ID
- CaltechAUTHORS:20200318-133758171
- HPRI-CT-1999-00088
- Transnational access to Research Infrastructure
- 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