On the stability of Λ(1405) matter

J. Hrtánková; N. Barnea; E. Friedman; A. Gal; J. Mareš; M. Schäfer

doi:10.1063/1.5118413

On the stability of Λ(1405) matter

J. Hrtánková^*, N. Barnea, E. Friedman, A. Gal, J. Mareš, M. Schäfer

^*Corresponding author for this work

Racah Institute of Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Scopus citations

Abstract

A hypothesis of absolutely stable strange hadronic matter composed of Λ(1405) baryons, here denoted Λ∗, is tested within many-body calculations performed using the Relativistic Mean-Field approach. In our calculations, we employed the Λ∗Λ∗ interaction compatible with the Λ∗Λ^∗ binding energy B_Λ∗Λ∗ = 40 MeV given by the phenomenological energy-independent K̄ N interaction model by Yamazaki and Akaishi (YA). We found that the binding energy per Λ∗, as well as the central density in Λ^∗ many-body systems saturates for mass number A ≥ 120, leaving Λ^∗ aggregates highly unstable against strong interaction decay. Moreover, we confronted the YA interaction model with kaonic atom data and found that it fails to reproduce the K^- single-nucleon absorption fractions at rest from bubble chamber experiments.

Original language	English
Title of host publication	13th International Conference on Hypernuclear and Strange Particle Physics, HYP 2018
Editors	Reinhard Schumacher, Liguang Tang
Publisher	American Institute of Physics Inc.
ISBN (Electronic)	9780735418721
DOIs	https://doi.org/10.1063/1.5118413
State	Published - 25 Jul 2019
Event	13th International Conference on Hypernuclear and Strange Particle Physics, HYP 2018 - Portsmouth, United States Duration: 24 Jun 2018 → 29 Jun 2018

Publication series

Name	AIP Conference Proceedings
Volume	2130
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	13th International Conference on Hypernuclear and Strange Particle Physics, HYP 2018
Country/Territory	United States
City	Portsmouth
Period	24/06/18 → 29/06/18

Bibliographical note

Publisher Copyright:
© 2019 Author(s).

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10.1063/1.5118413

Cite this

Hrtánková, J., Barnea, N., Friedman, E., Gal, A., Mareš, J., & Schäfer, M. (2019). On the stability of Λ(1405) matter. In R. Schumacher, & L. Tang (Eds.), 13th International Conference on Hypernuclear and Strange Particle Physics, HYP 2018 Article 040016 (AIP Conference Proceedings; Vol. 2130). American Institute of Physics Inc.. https://doi.org/10.1063/1.5118413

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abstract = "A hypothesis of absolutely stable strange hadronic matter composed of Λ(1405) baryons, here denoted Λ∗, is tested within many-body calculations performed using the Relativistic Mean-Field approach. In our calculations, we employed the Λ∗Λ∗ interaction compatible with the Λ∗Λ∗ binding energy BΛ∗Λ∗ = 40 MeV given by the phenomenological energy-independent {\=K} N interaction model by Yamazaki and Akaishi (YA). We found that the binding energy per Λ∗, as well as the central density in Λ∗ many-body systems saturates for mass number A ≥ 120, leaving Λ∗ aggregates highly unstable against strong interaction decay. Moreover, we confronted the YA interaction model with kaonic atom data and found that it fails to reproduce the K- single-nucleon absorption fractions at rest from bubble chamber experiments.",

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Hrtánková, J, Barnea, N, Friedman, E, Gal, A, Mareš, J & Schäfer, M 2019, On the stability of Λ(1405) matter. in R Schumacher & L Tang (eds), 13th International Conference on Hypernuclear and Strange Particle Physics, HYP 2018., 040016, AIP Conference Proceedings, vol. 2130, American Institute of Physics Inc., 13th International Conference on Hypernuclear and Strange Particle Physics, HYP 2018, Portsmouth, United States, 24/06/18. https://doi.org/10.1063/1.5118413

On the stability of Λ(1405) matter. / Hrtánková, J.; Barnea, N.; Friedman, E. et al.
13th International Conference on Hypernuclear and Strange Particle Physics, HYP 2018. ed. / Reinhard Schumacher; Liguang Tang. American Institute of Physics Inc., 2019. 040016 (AIP Conference Proceedings; Vol. 2130).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Schäfer, M.

PY - 2019/7/25

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On the stability of Λ(1405) matter

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