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Study of excited Ξ baryons with the P¯ ANDA detector

Barucca, G ; Putz, J ; Isaksson, Lennart LU and Zimmermann, S. (2021) In European Physical Journal A 57(4).
Abstract
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 Δ spectroscopy. Nevertheless, the study of the double and triple strange baryon spectrum provides independent information to the N∗ and Δ spectra. The future antiproton experiment P¯ANDA will provide direct access to final states containing a Ξ¯ Ξ pair, for which production cross sections up to μb are expected in p¯p 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 ∼106events/day. With a nearly 4 π detector acceptance, P¯ANDA will thus be a hyperon factory. In this study,... (More)
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 Δ spectroscopy. Nevertheless, the study of the double and triple strange baryon spectrum provides independent information to the N∗ and Δ spectra. The future antiproton experiment P¯ANDA will provide direct access to final states containing a Ξ¯ Ξ pair, for which production cross sections up to μb are expected in p¯p 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 ∼106events/day. With a nearly 4 π detector acceptance, P¯ANDA will thus be a hyperon factory. In this study, reactions of the type p¯p → Ξ¯ +Ξ∗ - as well as p¯p → Ξ¯ ∗ +Ξ- 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. © 2021, The Author(s). (Less)
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Contribution to journal
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published
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in
European Physical Journal A
volume
57
issue
4
article number
149
publisher
Springer
external identifiers
  • scopus:85104834772
ISSN
1434-6001
DOI
10.1140/epja/s10050-021-00444-5
language
English
LU publication?
yes
id
2e8eccb4-3975-43fd-9cd0-1087ef7ce5cf
date added to LUP
2021-05-17 09:51:12
date last changed
2023-12-07 12:09:23
@article{2e8eccb4-3975-43fd-9cd0-1087ef7ce5cf,
  abstract     = {{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 Δ spectroscopy. Nevertheless, the study of the double and triple strange baryon spectrum provides independent information to the N∗ and Δ spectra. The future antiproton experiment P¯ANDA will provide direct access to final states containing a Ξ¯ Ξ pair, for which production cross sections up to μb are expected in p¯p 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 ∼106events/day. With a nearly 4 π detector acceptance, P¯ANDA will thus be a hyperon factory. In this study, reactions of the type p¯p → Ξ¯ +Ξ∗ - as well as p¯p → Ξ¯ ∗ +Ξ- 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. © 2021, The Author(s).}},
  author       = {{Barucca, G and Putz, J and Isaksson, Lennart and Zimmermann, S.}},
  issn         = {{1434-6001}},
  language     = {{eng}},
  month        = {{04}},
  number       = {{4}},
  publisher    = {{Springer}},
  series       = {{European Physical Journal A}},
  title        = {{Study of excited Ξ baryons with the P¯ ANDA detector}},
  url          = {{http://dx.doi.org/10.1140/epja/s10050-021-00444-5}},
  doi          = {{10.1140/epja/s10050-021-00444-5}},
  volume       = {{57}},
  year         = {{2021}},
}