Investigating the composition of the K0*(700) state with π±KS0 correlations at the LHC

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F24%3A00604095" target="_blank" >RIV/68378271:_____/24:00604095 - isvavai.cz</a>

Alternative codes found

RIV/61389005:_____/24:00604095 RIV/68407700:21340/24:00380160

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0370269324004738" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0370269324004738</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.physletb.2024.138915" target="_blank" >10.1016/j.physletb.2024.138915</a>

Result language

angličtina

Original language name

Investigating the composition of the K0*(700) state with π±KS0 correlations at the LHC

Original language description

The first measurements of femtoscopic correlations with the particle pair combinations pi +/- K-S(0) in pp collisions at root s = 13 TeV at the Large Hadron Collider (LHC) are reported by the ALICE experiment. Using the femtoscopic approach, it is shown that it is possible to study the elusive K-0*(700) particle that has been considered a tetraquark candidate for over forty years. Source and final-state interaction parameters are extracted by fitting a model assuming a Gaussian source to the experimentally measured two-particle correlation functions. The final-state interaction in the pi +/- K-S(0) system is modeled through a resonant scattering amplitude, defined in terms of a mass and a coupling parameter, The extracted mass and Breit-Wigner width, derived from the coupling parameter, of the final-state interaction are found to be consistent with previous measurements of the K-0*(700). The small value and increase of the correlation strength with increasing source size support the hypothesis that the K-0*(700) is a four-quark state, i.e. a tetraquark state of the form (q(1), (q(2)) over bar, q(3), (q(3)) over bar) in which q(1), q(2) and q(3) indicate the flavor of the valence quarks of the pi and K-S(0). This latter trend is also confirmed via a simple geometric model that assumes a tetraquark structure of the K-0*(700) resonance.

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

10303 - Particles and field physics

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

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

Name of the periodical

Physics Letters. B

ISSN

0370-2693

e-ISSN

1873-2445

Volume of the periodical

856

Issue of the periodical within the volume

SEP

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

15

Pages from-to

138915

UT code for WoS article

001381469300001

EID of the result in the Scopus database

2-s2.0-85200759268