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 √ sNN = 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 mo- mentum (pT). The pT intervals covered in central collisions are: 1 < pT < 50GeV/c for D0,2<50GeV/cforD+,3<50GeV/cforD∗+,and4<16GeV/cfor D+s mesons. The nuclear modification factors (RAA) for non-strange D mesons (D0, D+, D∗+) show minimum values of about 0.2 for pT = 6–10 GeV/c in the most central collisions and are compatible within uncertainties with those measured at √sNN = 2.76 TeV. For D+s mesons, the values of RAA are larger than those of non-strange D mesons, but compatible within uncertainties. In central collisions the average RAA of non-strange D mesons is compatible with that of charged particles for pT > 8 GeV/c, while it is larger at lower pT. 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.

Measurement of D0, D+, D*+ and D s+ production in Pb-Pb collisions at √sNN=5.02 TeV / Acharya, S., Acosta, F.T., Adamová, D., Adolfsson, J., Aggarwal, M.M., Aglieri Rinella, G., Agnello, M., Agrawal, N., Ahammed, Z., Ahn, S.U., Aiola, S., Akindinov, A., Al-Turany, M., Alam, S.N., Albuquerque, D.S.D., Aleksandrov, D., Alessandro, B., Alfaro Molina, R., Ali, Y., Alici, A., et al.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - 2018:10(2018). [10.1007/JHEP10(2018)174]

Measurement of D0, D+, D*+ and D s+ production in Pb-Pb collisions at √sNN=5.02 TeV

Toppi, M.;
2018

Abstract

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 √ sNN = 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 mo- mentum (pT). The pT intervals covered in central collisions are: 1 < pT < 50GeV/c for D0,2<50GeV/cforD+,3<50GeV/cforD∗+,and4<16GeV/cfor D+s mesons. The nuclear modification factors (RAA) for non-strange D mesons (D0, D+, D∗+) show minimum values of about 0.2 for pT = 6–10 GeV/c in the most central collisions and are compatible within uncertainties with those measured at √sNN = 2.76 TeV. For D+s mesons, the values of RAA are larger than those of non-strange D mesons, but compatible within uncertainties. In central collisions the average RAA of non-strange D mesons is compatible with that of charged particles for pT > 8 GeV/c, while it is larger at lower pT. 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.
2018
quark gluon plasma
quark gluon plasma
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of D0, D+, D*+ and D s+ production in Pb-Pb collisions at √sNN=5.02 TeV / Acharya, S., Acosta, F.T., Adamová, D., Adolfsson, J., Aggarwal, M.M., Aglieri Rinella, G., Agnello, M., Agrawal, N., Ahammed, Z., Ahn, S.U., Aiola, S., Akindinov, A., Al-Turany, M., Alam, S.N., Albuquerque, D.S.D., Aleksandrov, D., Alessandro, B., Alfaro Molina, R., Ali, Y., Alici, A., et al.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - 2018:10(2018). [10.1007/JHEP10(2018)174]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1469918
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