Yayınlanmış 1 Ocak 2021
| Sürüm v1
Dergi makalesi
Açık
Study of excited Xi baryons with the (P)over-barANDA detector
Oluşturanlar
- 1. Univ Politecn Marche Ancona, Ancona, Italy
- 2. Univ Basel, Basel, Switzerland
- 3. Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China
- 4. Ruhr Univ Bochum, Inst Expt Phys 1, Bochum, Germany
Açıklama
The study of baryon excitation spectra provides insight into the inner structure of baryons. So far, most of the world-wide efforts have been directed towards N * and Delta spectroscopy. Nevertheless, the study of the double and triple strange baryon spectrum provides independent information to the N * and Delta spectra. The future antiproton experiment (P) over bar ANDA will provide direct access to final states containing a (Xi) over bar Xi pair, for which production cross sections up to mu b are expected in (p) over barp reactions. With a luminosity of L = 10(31) cm(-2) s(-1) in the first phase of the experiment, the expected cross sections correspond to a production rate of similar to 10(6) events/day. With a nearly 4 pi detector acceptance, (P) over bar ANDA will thus be a hyperon factory. In this study, reactions of the type (p) over barp -> (Xi) over bar (+)Xi*(-) as well as (p) over barp -> (Xi) over bar*(+)Xi(-) with various decay modes are investigated. For the exclusive reconstruction of the signal events a full decay tree fit is used, resulting in reconstruction efficiencies between 3 and 5%. This allows high statistics data to be collected within a few weeks of data taking.
Dosyalar
bib-bcca72a8-84cc-444e-a920-1e1f69a32397.txt
Dosyalar
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