Projections of two-particle correlations onto transverse rapidity in Au + Au collisions at √sNN=200 GeV at STAR
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F22%3A00566029" target="_blank" >RIV/61389005:_____/22:00566029 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/PhysRevC.106.044906" target="_blank" >https://doi.org/10.1103/PhysRevC.106.044906</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevC.106.044906" target="_blank" >10.1103/PhysRevC.106.044906</a>
Alternative languages
Result language
angličtina
Original language name
Projections of two-particle correlations onto transverse rapidity in Au + Au collisions at √sNN=200 GeV at STAR
Original language description
We report precision measurements of hypernuclei H-3(Lambda) and H-4(Lambda) lifetimes obtained from Au + Au collisions at root s(NN) = 3.0 GeV and 7.2 GeV collected by the STAR experiment at the Relativistic Heavy Ion Collider, and the first measurement of H-3(Lambda) and H-4(Lambda) midrapidity yields in Au + Au collisions at root s(NN) = 3.0 GeV. H-3(Lambda) and H-4(Lambda), being the two simplest bound states composed of hyperons and nucleons, are cornerstones in the field of hypernuclear physics. Their lifetimes are measured to be 221 +/- 15(stat) +/- 19(syst) ps for H-3(Lambda) and 218 +/- 6(stat) +/- 13(syst) ps for H-4(Lambda). The p(T)-integrated yields of H-3(Lambda) and H-4(Lambda) are presented in different centrality and rapidity intervals. It is observed that the shape of the rapidity distribution of H-4(Lambda) is different for 0%-10% and 10%-50% centrality collisions. Thermal model calculations, using the canonical ensemble for strangeness, describes the H-3(Lambda) yield well, while underestimating the H-4(Lambda) yield. Transport models, combining baryonic mean-field and coalescence (JAM) or utilizing dynamical cluster formation via baryonic interactions (PHQMD) for light nuclei and hypernuclei production, approximately describe the measured H-3(Lambda) and H-4(Lambda) yields. Our measurements provide means to precisely assess our understanding of the fundamental baryonic interactions with strange quarks, which can impact our understanding of more complicated systems involving hyperons, such as the interior of neutron stars or exotic hypernuclei.
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/LTT18002" target="_blank" >LTT18002: Study of new properties of nuclear matter in the international experiment STAR</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review C
ISSN
2469-9985
e-ISSN
2469-9993
Volume of the periodical
106
Issue of the periodical within the volume
4
Country of publishing house
US - UNITED STATES
Number of pages
22
Pages from-to
044906
UT code for WoS article
000897558500004
EID of the result in the Scopus database
2-s2.0-85142510085