Towards the understanding of the genuine three-body interaction for p-p-p and p-p-Λ

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F23%3A00575286" target="_blank" >RIV/61389005:_____/23:00575286 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/23:00575286

Výsledek na webu

<a href="https://doi.org/10.1140/epja/s10050-023-00998-6" target="_blank" >https://doi.org/10.1140/epja/s10050-023-00998-6</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epja/s10050-023-00998-6" target="_blank" >10.1140/epja/s10050-023-00998-6</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Towards the understanding of the genuine three-body interaction for p-p-p and p-p-Λ

Popis výsledku v původním jazyce

Three-body nuclear forces play an important role in the structure of nuclei and hypernuclei and are also incorporated in models to describe the dynamics of dense baryonic matter, such as in neutron stars. So far, only indirect measurements anchored to the binding energies of nuclei can be used to constrain the three-nucleon force, and if hyperons are considered, the scarce data on hypernuclei impose only weak constraints on the three-body forces. In this work, we present the first direct measurement of the p-p-p and p-p-Lambda systems in terms of three-particle correlation functions carried out for pp collisions at root s = 13 TeV. Three-particle cumulants are extracted from the correlation functions by applying the Kubo formalism, where the three-particle interaction contribution to these correlations can be isolated after subtracting the known two-body interaction terms. A negative cumulant is found for the p-p-p system, hinting to the presence of a residual three-body effect while for p-p-Lambda the cumulant is consistent with zero. This measurement demonstrates the accessibility of three-baryon correlations at the LHC.

Název v anglickém jazyce

Towards the understanding of the genuine three-body interaction for p-p-p and p-p-Λ

Popis výsledku anglicky

Three-body nuclear forces play an important role in the structure of nuclei and hypernuclei and are also incorporated in models to describe the dynamics of dense baryonic matter, such as in neutron stars. So far, only indirect measurements anchored to the binding energies of nuclei can be used to constrain the three-nucleon force, and if hyperons are considered, the scarce data on hypernuclei impose only weak constraints on the three-body forces. In this work, we present the first direct measurement of the p-p-p and p-p-Lambda systems in terms of three-particle correlation functions carried out for pp collisions at root s = 13 TeV. Three-particle cumulants are extracted from the correlation functions by applying the Kubo formalism, where the three-particle interaction contribution to these correlations can be isolated after subtracting the known two-body interaction terms. A negative cumulant is found for the p-p-p system, hinting to the presence of a residual three-body effect while for p-p-Lambda the cumulant is consistent with zero. This measurement demonstrates the accessibility of three-baryon correlations at the LHC.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10304 - Nuclear physics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

European Physical Journal A

ISSN

1434-6001

e-ISSN

1434-601X

Svazek periodika

59

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

22

Strana od-do

145

Kód UT WoS článku

001045131800001

EID výsledku v databázi Scopus

2-s2.0-85165704330