Accessing the strong interaction between Λ baryons and charged kaons with the femtoscopy technique at the LHC
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F23%3A00579007" target="_blank" >RIV/61389005:_____/23:00579007 - isvavai.cz</a>
Alternative codes found
RIV/68378271:_____/23:00579007 RIV/68407700:21340/23:00370372
Result on the web
<a href="https://doi.org/10.1016/j.physletb.2023.138145" target="_blank" >https://doi.org/10.1016/j.physletb.2023.138145</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.physletb.2023.138145" target="_blank" >10.1016/j.physletb.2023.138145</a>
Alternative languages
Result language
angličtina
Original language name
Accessing the strong interaction between Λ baryons and charged kaons with the femtoscopy technique at the LHC
Original language description
The interaction between Lambda baryons and kaons/antikaons is a crucial ingredient for the strangeness S= 0 and S= -2 sector of the meson-baryon interaction at low energies. In particular, the Lambda(K) over bar might help in understanding the origin of states such as the Xi(1620), whose nature and properties are still under debate. Experimental data on Lambda-K and Lambda-(K) over bar systems are scarce, leading to large uncertainties and tension between the available theoretical predictions constrained by such data. In this Letter we present the measurements of Lambda-K+ circle plus (Lambda) over bar -K- and Lambda-K- circle plus (Lambda) over bar -K+ correlations obtained in the high-multiplicity triggered data sample in pp collisions at root s= 13TeV recorded by ALICE at the LHC. The correlation function for both pairs is modeled using the Lednicky-Lyuboshits analytical formula and the corresponding scattering parameters are extracted. The Lambda-K- circle plus (Lambda) over bar -K+ correlations show the presence of several structures at relative momenta k* above 200 MeV/c, compatible with the Omega baryon, the Xi(1690), and Xi(1820) resonances decaying into Lambda-K- pairs. The low k* region in the Lambda-K- circle plus (Lambda) over bar -K+ also exhibits the presence of the Xi(1620) state, expected to strongly couple to the measured pair. The presented data allow to access the Lambda K+ and Lambda K- strong interaction with an unprecedented precision and deliver the first experimental observation of the Xi(1620) decaying into Lambda K-.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10304 - Nuclear physics
Result continuities
Project
<a href="/en/project/LM2023040" target="_blank" >LM2023040: Research infrastructure for experiments at CERN</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physics Letters. B
ISSN
0370-2693
e-ISSN
1873-2445
Volume of the periodical
845
Issue of the periodical within the volume
OCT
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
15
Pages from-to
138145
UT code for WoS article
001089435000001
EID of the result in the Scopus database
2-s2.0-85172696993