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Measurement of the Hypertriton Properties and Production with ALICE
The hypertriton (3 ΛH) is a bound state of a proton, a neutron, and a Λ baryon. Studying its internal structure is crucial to investigate the hyperon–nucleon (Y –N) strong interaction and offers insights into the inner core of neutron stars, where Λ production is favoured. Measuring precisely the 3...
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Lenguaje: | eng |
Publicado: |
2023
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Acceso en línea: | https://dx.doi.org/10.5506/APhysPolBSupp.16.1-A149 http://cds.cern.ch/record/2869542 |
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author | Mazzaschi, Francesco |
author_facet | Mazzaschi, Francesco |
author_sort | Mazzaschi, Francesco |
collection | CERN |
description | The hypertriton (3
ΛH) is a bound state of a proton, a neutron, and
a Λ baryon. Studying its internal structure is crucial to investigate the
hyperon–nucleon (Y –N) strong interaction and offers insights into the inner
core of neutron stars, where Λ production is favoured. Measuring precisely
the 3
ΛH lifetime, τ3
ΛH, and Λ separation energy, BΛ, provide a powerful
tool for constraining the parameters of the Y –N potential, as τ3
ΛH and BΛ
directly reflect the strength of the Y –N interaction. The most precise measurements
to date of τ3
ΛH and BΛ are obtained by the ALICE Collaboration,
using the data sample of Pb–Pb collisions at a centre-of-mass energy per
nucleon pair of √
sNN = 5.02 TeV. These measurements strongly support
the loosely-bound nature of 3
ΛH and shed light on the Y –N interaction. Furthermore,
the weakly bound nature of the 3
ΛH has important implications
on our understanding of the nucleosynthesis mechanism in hadronic collisions.
Indeed, the large size of the 3
ΛH wave function determines a large
separation between the nuclei production models at low charged-particle
multiplicity. For this reason, the first measurement of the production of 3
ΛH
in p–Pb collisions at √
sNN = 5.02 TeV performed by ALICE represents an
ideal probe for discriminating between the nuclei production mechanisms
in high-energy hadron–hadron collisions. |
id | cern-2869542 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2023 |
record_format | invenio |
spelling | cern-28695422023-10-04T17:32:56Zdoi:10.5506/APhysPolBSupp.16.1-A149http://cds.cern.ch/record/2869542engMazzaschi, FrancescoMeasurement of the Hypertriton Properties and Production with ALICENuclear Physics - ExperimentParticle Physics - ExperimentThe hypertriton (3 ΛH) is a bound state of a proton, a neutron, and a Λ baryon. Studying its internal structure is crucial to investigate the hyperon–nucleon (Y –N) strong interaction and offers insights into the inner core of neutron stars, where Λ production is favoured. Measuring precisely the 3 ΛH lifetime, τ3 ΛH, and Λ separation energy, BΛ, provide a powerful tool for constraining the parameters of the Y –N potential, as τ3 ΛH and BΛ directly reflect the strength of the Y –N interaction. The most precise measurements to date of τ3 ΛH and BΛ are obtained by the ALICE Collaboration, using the data sample of Pb–Pb collisions at a centre-of-mass energy per nucleon pair of √ sNN = 5.02 TeV. These measurements strongly support the loosely-bound nature of 3 ΛH and shed light on the Y –N interaction. Furthermore, the weakly bound nature of the 3 ΛH has important implications on our understanding of the nucleosynthesis mechanism in hadronic collisions. Indeed, the large size of the 3 ΛH wave function determines a large separation between the nuclei production models at low charged-particle multiplicity. For this reason, the first measurement of the production of 3 ΛH in p–Pb collisions at √ sNN = 5.02 TeV performed by ALICE represents an ideal probe for discriminating between the nuclei production mechanisms in high-energy hadron–hadron collisions.oai:cds.cern.ch:28695422023 |
spellingShingle | Nuclear Physics - Experiment Particle Physics - Experiment Mazzaschi, Francesco Measurement of the Hypertriton Properties and Production with ALICE |
title | Measurement of the Hypertriton Properties and Production with ALICE |
title_full | Measurement of the Hypertriton Properties and Production with ALICE |
title_fullStr | Measurement of the Hypertriton Properties and Production with ALICE |
title_full_unstemmed | Measurement of the Hypertriton Properties and Production with ALICE |
title_short | Measurement of the Hypertriton Properties and Production with ALICE |
title_sort | measurement of the hypertriton properties and production with alice |
topic | Nuclear Physics - Experiment Particle Physics - Experiment |
url | https://dx.doi.org/10.5506/APhysPolBSupp.16.1-A149 http://cds.cern.ch/record/2869542 |
work_keys_str_mv | AT mazzaschifrancesco measurementofthehypertritonpropertiesandproductionwithalice |