Constraining the (K)over-barN coupled channel dynamics using femtoscopic correlations at the LHC

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F23%3A00367840" target="_blank" >RIV/68407700:21340/23:00367840 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1140/epjc/s10052-023-11476-0" target="_blank" >https://doi.org/10.1140/epjc/s10052-023-11476-0</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epjc/s10052-023-11476-0" target="_blank" >10.1140/epjc/s10052-023-11476-0</a>

Result language

angličtina

Original language name

Constraining the (K)over-barN coupled channel dynamics using femtoscopic correlations at the LHC

Original language description

The interaction of K(-)with protons is characterised by the presence of several coupled channels, systems like (K) over bar (0)n and pi Sigma with a similar mass and the same quantum numbers as the K(-)p state. The strengths of these couplings to the K(-)p system are of crucial importance for the understanding of the nature of the Lambda(1405) resonance and of the attractive K(-)p strong interaction. In this article, we present measurements of the K(-)p correlation functions in relative momentum space obtained in pp collisions at root s = 13 Te, in p-Pb collisions at root sNN = 5.02 Te, and (semi)peripheral Pb-Pb collisions at root sNN = 5.02 Te. The emitting source size, composed of a core radius anchored to the K(+)p correlation and of a resonance halo specific to each particle pair, varies between 1 and 2 fm in these collision systems. The strength and the effects of the (K) over bar (0)n and pi Sigma inelastic channels on the measured K(-)p correlation function are investigated in the different colliding systems by comparing the data with state-of-the-art models of chiral potentials. A novel approach to determine the conversion weights omega, necessary to quantify the amount of produced inelastic channels in the correlation function, is presented. In this method, particle yields are estimated from thermal model predictions, and their kinematic distribution from blast-wave fits to measured data. The comparison of chiral potentials to the measured K(-)p interaction indicates that, while the pi Sigma-K(-)p dynamics is well reproduced by the model, the coupling to the (K) over bar (0)n channel in the model is currently underestimated.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Project

<a href="/en/project/LM2018104" target="_blank" >LM2018104: Research Infrastructure for experiments at CERN</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2023

Confidentiality

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

Name of the periodical

European Physical Journal C

ISSN

1434-6044

e-ISSN

1434-6052

Volume of the periodical

83

Issue of the periodical within the volume

4

Country of publishing house

DE - GERMANY

Number of pages

21

Pages from-to

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UT code for WoS article

001022689000001

EID of the result in the Scopus database

2-s2.0-85158052545