Suppression of Lambda(1520) resonance production in central Pb-Pb collisions at root S-NN=2.76 TeV
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F19%3A00503130" target="_blank" >RIV/61389005:_____/19:00503130 - isvavai.cz</a>
Alternative codes found
RIV/68378271:_____/19:00503130 RIV/68407700:21340/19:00333350
Result on the web
<a href="https://doi.org/10.1103/PhysRevC.99.024905" target="_blank" >https://doi.org/10.1103/PhysRevC.99.024905</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevC.99.024905" target="_blank" >10.1103/PhysRevC.99.024905</a>
Alternative languages
Result language
angličtina
Original language name
Suppression of Lambda(1520) resonance production in central Pb-Pb collisions at root S-NN=2.76 TeV
Original language description
The production yield of the Lambda(1520) baryon resonance is measured at midrapidity in Pb-Pb collisions at root S-NN = 2.76 TeV with the ALICE detector at the Large Hadron Collider (LHC). The measurement is performed in the Lambda(1520) -> pK(-) (and charge conjugate) hadronic decay channel as a function of the transverse momentum (p(T)) and collision centrality. The ratio of the P-T-integrated production of Lambda(1520) baryons relative to A baryons in central collisions is suppressed by about a factor of 2 with respect to peripheral collisions. This is the first observation of the suppression of a baryonic resonance at the LHC and the first 3 sigma evidence of Lambda(1520) suppression within a single collision system. The measured Lambda(1520)/Lambda ratio in central collisions is smaller than the value predicted by the statistical hadronization model calculations. The shape of the measured p(T) distribution and the centrality dependence of the suppression are reproduced by the EPOS3 Monte Carlo event generator. The measurement adds further support to the formation of a dense hadronic phase in the final stages of the evolution of the fireball created in heavy-ion collisions, lasting long enough to cause a significant reduction in the observable yield of short-lived resonances.
Czech name
—
Czech description
—
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
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
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
—
Volume of the periodical
99
Issue of the periodical within the volume
2
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
024905
UT code for WoS article
000458134900002
EID of the result in the Scopus database
2-s2.0-85061240080