Observation of Directed Flow of Hypernuclei H-3(Lambda) and H-4(Lambda) in root s(NN)=3 GeV Au + Au Collisions at RHIC

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F23%3A00367639" target="_blank" >RIV/68407700:21340/23:00367639 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/PhysRevLett.130.212301" target="_blank" >https://doi.org/10.1103/PhysRevLett.130.212301</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevLett.130.212301" target="_blank" >10.1103/PhysRevLett.130.212301</a>

Result language
angličtina
Original language name
Observation of Directed Flow of Hypernuclei H-3(Lambda) and H-4(Lambda) in root s(NN)=3 GeV Au + Au Collisions at RHIC
Original language description
We report here the first observation of directed flow (v(1)) of the hypernuclei H-3(Lambda) and H-3(Lambda) in mid-central Au + Au collisions at root s(NN) 1/4 3 GeV at RHIC. These data are taken as part of the beam energy sNN scan program carried out by the STAR experiment. From 165 x 10(6) events in 5%-40% centrality, about 8400 H-3(Lambda) and 5200 H-4(Lambda) candidates are reconstructed through two- and three-body decay channels. We observe that these hypernuclei exhibit significant directed flow. Comparing to that of light nuclei, it is found that the midrapidity v(1) slopes of H-3(Lambda) and (4)(Lambda)AH follow baryon number scaling, implying that the coalescence is the dominant mechanism for these hypernuclei production in the 3 GeV Au + Au collisions.
Czech name
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Czech description
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Type
J<sub>imp</sub> - 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
<a href="/en/project/LM2023034" target="_blank" >LM2023034: Brookhaven National Laboratory - Participation of the Czech Republic</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

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