Multiplicity dependence of light (anti-)nuclei production in p-Pb collisions at sNN=5.02 TeV
The measurement of the deuteron and anti-deuteron production in the rapidity range −1<y<0 as a function of transverse momentum and event multiplicity in p-Pb collisions at sNN = 5.02 TeV is presented. (Anti-)deuterons are identified via their specific energy loss dE/dx and via their time-of-fl...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , |
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| Körperschaft: | |
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
2020
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| In: |
Physics letters
Year: 2020, Jahrgang: 800 |
| ISSN: | 1873-2445 |
| DOI: | 10.1016/j.physletb.2019.135043 |
| Online-Zugang: | Verlag, Volltext: https://doi.org/10.1016/j.physletb.2019.135043 Verlag, Volltext: http://www.sciencedirect.com/science/article/pii/S0370269319307658 
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| Verfasserangaben: | S. Acharya et al. (ALICE Collaboration) |
MARC
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| 245 | 1 | 0 | |a Multiplicity dependence of light (anti-)nuclei production in p-Pb collisions at sNN=5.02 TeV |c S. Acharya et al. (ALICE Collaboration) |
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| 500 | |a Gesehen am 11.02.2020 | ||
| 500 | |a S. Acharya, V. Anguelov, M. Arslandok, M.C. Danisch, V.J.G Feuillard, P. Glässel, J. Kim, M. Kim, M.K. Köhler, L. Leardini, A. Ohlson, Y. Pachmayer, K. Reygers, R. Schicker, A. Schmah, M.O. Schmidt, J. Stachel, D. Weiser, B. Windelband, A. Yüncü [und viele weitere] | ||
| 520 | |a The measurement of the deuteron and anti-deuteron production in the rapidity range −1<y<0 as a function of transverse momentum and event multiplicity in p-Pb collisions at sNN = 5.02 TeV is presented. (Anti-)deuterons are identified via their specific energy loss dE/dx and via their time-of-flight. Their production in p-Pb collisions is compared to pp and Pb-Pb collisions and is discussed within the context of thermal and coalescence models. The ratio of integrated yields of deuterons to protons (d/p) shows a significant increase as a function of the charged-particle multiplicity of the event starting from values similar to those observed in pp collisions at low multiplicities and approaching those observed in Pb-Pb collisions at high multiplicities. The mean transverse particle momenta are extracted from the deuteron spectra and the values are similar to those obtained for p and Λ particles. Thus, deuteron spectra do not follow mass ordering. This behaviour is in contrast to the trend observed for non-composite particles in p-Pb collisions. In addition, the production of the rare He3 and He‾3 nuclei has been studied. The spectrum corresponding to all non-single diffractive p-Pb collisions is obtained in the rapidity window −1<y<0 and the pT-integrated yield dN/dy is extracted. It is found that the yields of protons, deuterons, and He3, normalised by the spin degeneracy factor, follow an exponential decrease with mass number. | ||
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