Measurement of D0, D+, D$$^{*+}$$ and D$$_s^+$$ production in Pb-Pb collisions at $$\sqrt{{\mathrm{s}}_{\mathrm{NN}}}=5.02$$ TeV
We report measurements of the production of prompt D0, D+, D$$^{*+}$$ and D$$_s^+$$ mesons in Pb–Pb collisions at the centre-of-mass energy per nucleon-nucleon pair $$\sqrt{s}$$$$_{NN}$$ = 5.02 TeV, in the centrality classes 0–10%, 30–50% and 60–80%. The D-meson production yields are measured at mid-rapidity (|$$y$$| < 0.5) as a function of transverse momentum ($$p_T$$). The $$p_T$$ intervals covered in central collisions are: 1 < $$p_T$$ < 50 GeV/$$c$$ for D$^0$, 2 < $$p_T$$ < 50 GeV/$$c$$ for D$^+$, 3 < $$p_T$$ < 50 GeV/$$c$$ for D$$^{*+}$$, and 4 < $$p_T$$ < 16 GeV/$$c$$ for D$$_s^+$$ mesons. The nuclear modification factors ($$R_{AA}$$) for non-strange D mesons (D$^0$, D$^+$, D$$^{*+}$$) show minimum values of about 0.2 for $$p_T$$ = 6–10 GeV/$$c$$ in the most central collisions and are compatible within uncertainties with those measured at $$\sqrt{{\mathrm{s}}_{\mathrm{NN}}}$$ = 2.76 TeV. For D$$_s^+$$ mesons, the values of $$R_{AA}$$ are larger than those of non-strange D mesons, but compatible within uncertainties. In central collisions the average $$R_{AA}$$ of non-strange D mesons is compatible with that of charged particles for $$p_T$$ > 8 GeV/$$c$$, while it is larger at lower $$p_T$$. The nuclear modification factors for strange and non-strange D mesons are also compared to theoretical models with different implementations of in-medium energy loss.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- Contributing Organization:
- The ALICE collaboration
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1550817
- Journal Information:
- Journal of High Energy Physics (Online), Vol. 2018, Issue 10; ISSN 1029-8479
- Publisher:
- Springer BerlinCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Squeezed back-to-back correlations of bosons with nonzero widths in relativistic heavy-ion collisions
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journal | July 2019 |
Heavy-Flavor Measurements with the ALICE Experiment at the LHC
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journal | May 2019 |
Squeezed back-to-back correlations of bosons with nonzero widths in relativistic heavy-ion collisions | text | January 2019 |
Heavy flavour measurements with the ALICE experiment at the LHC | text | January 2019 |
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