(3)(Lambda)Hand (3)((Lambda)over-bar)(H)over-bar production in Pb-Pb collisions at root s(NN)=2.76 TeV

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F16%3A00458654" target="_blank" >RIV/68378271:_____/16:00458654 - isvavai.cz</a>
Alternative codes found
RIV/61389005:_____/16:00458654 RIV/68407700:21340/16:00301033
Result on the web
<a href="http://dx.doi.org/10.1016/j.physletb.2016.01.040" target="_blank" >http://dx.doi.org/10.1016/j.physletb.2016.01.040</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.physletb.2016.01.040" target="_blank" >10.1016/j.physletb.2016.01.040</a>

Result language
angličtina
Original language name
(3)(Lambda)Hand (3)((Lambda)over-bar)(H)over-bar production in Pb-Pb collisions at root s(NN)=2.76 TeV
Original language description
The production of the hypertriton nuclei H-3(Lambda) and (3)((Lambda) over bar)(H) over bar has been measured for the first time in Pb-Pb collisions at root s(NN) = 2.76 TeVwith the ALICE experiment at LHC. The p(T)-integrated H-3(Lambda) yield in one unity of rapidity, dN/dy x B.R.((3 Lambda H -> 3He,pi-)) = (3.86 +/- 0.77(stat.) +/- 0.68(syst.)) x 10(-5) in the 0-10% most central collisions, is consistent with the predictions from a statistical thermal model using the same temperature as for the light hadrons. The coalescence parameter B-3 shows a dependence on the transverse momentum, similar to the B-2 of deuterons and the B-3 of He-3 nuclei. The ratio of yields S-3 = H-3(Lambda)/(He-3 x Lambda/p) was measured to be S-3 = 0.60 +/- 0.13(stat.) +/- 0.21(syst.) in 0-10% centrality events; this value is compared to different theoretical models. The measured S-3 is compatible with thermal model predictions. The measured H-3(Lambda) lifetime, tau = 181(-39)(+54)(stat.) +/- 33(syst.) psis in agreement within 1s with the world average value.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BF - Elementary particle theory and high energy physics
OECD FORD branch
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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
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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