3ΛH and 3Λ[bar]H[bar] production in Pb-Pb collisions at √sNN=2.76 TeV
The production of the hypertriton nuclei HΛ3 and H‾Λ¯3 has been measured for the first time in Pb-Pb collisions at sNN=2.76 TeV with the ALICE experiment at LHC. The pT-integrated HΛ3 yield in one unity of rapidity, dN/dy×B.R.(HΛ3→He3,π−)=(3.86±0.77(stat.)±0.68(syst.))×10−5 in the 0-10% most central...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
25 January 2016
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| In: |
Physics letters
Year: 2016, Jahrgang: 754, Pages: 360-372 |
| ISSN: | 1873-2445 |
| DOI: | 10.1016/j.physletb.2016.01.040 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.physletb.2016.01.040 Verlag, lizenzpflichtig, Volltext: http://www.sciencedirect.com/science/article/pii/S0370269316000575 
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| Verfasserangaben: | ALICE Collaboration |
MARC
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| 245 | 1 | 0 | |a 3ΛH and 3Λ[bar]H[bar] production in Pb-Pb collisions at √sNN=2.76 TeV |c ALICE Collaboration |
| 246 | 3 | 0 | |a sqrt Λ |
| 246 | 3 | 3 | |a 3 lambda H and 3 lambda bar H bar production in Pb-Pb collisions at square root sNN = 2.76 TeV |
| 264 | 1 | |c 25 January 2016 | |
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| 500 | |a Im Titel ist die Zahl "3" hochgestellt, das Zeichen "Λ" ist tiefgestellt | ||
| 500 | |a Im Titel haben das zweite "Λ" und das zweite "H" einen Oberstrich | ||
| 500 | |a Im Titel ist "lambda" als griechischer Buchstaben dargestellt | ||
| 500 | |a Im Titel ist "NN" nach s tiefgestellt, der ganze Ausdruck "s NN" steht unter dem Wurzelsymbol | ||
| 500 | |a ALICE collaboration: J. Adam, V. Anguelov, F. Bock, O. Busch, A. Deisting, M.G. Fleck, P. Glässel, M.L. Knichel, L. Leardini, J. Mercado Pérez, H. Oeschler, K. Oyama, Y. Pachmayer, F. Reidt, K. Reygers, R. Schicker, J. Stachel, J.H. Stiller, M.A. Völkl, Y. Wang, J. Wilkinson, B. Windelband, M. Winn, A. Zimmermann [und 955 weitere] | ||
| 500 | |a Gesehen am 29.07.2020 | ||
| 520 | |a The production of the hypertriton nuclei HΛ3 and H‾Λ¯3 has been measured for the first time in Pb-Pb collisions at sNN=2.76 TeV with the ALICE experiment at LHC. The pT-integrated HΛ3 yield in one unity of rapidity, dN/dy×B.R.(HΛ3→He3,π−)=(3.86±0.77(stat.)±0.68(syst.))×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 B3 shows a dependence on the transverse momentum, similar to the B2 of deuterons and the B3 of 3He nuclei. The ratio of yields S3=HΛ3/(He3×Λ/p) was measured to be S3=0.60±0.13(stat.)±0.21(syst.) in 0-10% centrality events; this value is compared to different theoretical models. The measured S3 is compatible with thermal model predictions. The measured HΛ3 lifetime, τ=181−39+54(stat.)±33(syst.)ps is in agreement within 1σ with the world average value. | ||
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