D meson nuclear modification factor in PbPb at 5.02 TeV with CMS

2017 ◽  
Vol 289-290 ◽  
pp. 249-252 ◽  
Author(s):  
Jing Wang
Keyword(s):  
D Meson ◽  
Nuclear Modification Factor ◽  
Nuclear Modification ◽  
Modification Factor

scholarly journals Measurement of the D-meson Nuclear Modification Factor and Elliptic Flow in Pb–Pb Collisions at sNN = 5.02 TeV with ALICE at the LHC

2018 ◽  
Vol 46 ◽  
pp. 1860018 ◽  
Author(s):  
Syaefudin Jaelani
Keyword(s):  
Energy Loss ◽  
D Meson ◽  
Charm Quark ◽  
Elliptic Flow ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Event Shape ◽  
Nuclear Modification Factor ◽  
Nuclear Modification ◽  
Modification Factor

Heavy-flavour hadrons are effective probes to study the Quark-Gluon Plasma (QGP) formed in ultra-relativistic heavy-ion collisions. The ALICE Collaboration measured the D-mesons (D0, D[Formula: see text], D*[Formula: see text] and D[Formula: see text]) production in Pb–Pb collisions at [Formula: see text] = 5.02 TeV. The in-medium energy loss can be studied by means of the nuclear modification factor ([Formula: see text]). The comparison between the D[Formula: see text] and the non-strange D-meson [Formula: see text] can help to study the hadronisation mechanism of the charm quark in the QGP. In semi-central collisions the measurement of the D-meson elliptic flow, [Formula: see text], at low [Formula: see text] allows to investigate the participation of the heavy quarks in the collective expansion of the system while at high [Formula: see text] it constrains the path-length dependence of the energy loss. Furthermore the Event-Shape Engineering (ESE) technique is used to measure D-meson elliptic flow in order to study the coupling of the charm quarks to the light quarks of the underlying medium.

scholarly journals Measurement of the D-meson nuclear modification factor and elliptic flow in Pb–Pb collisions at √SNN = 5.02 TeV with ALICE at the LHC

2018 ◽  
Vol 171 ◽  
pp. 18007
Author(s):  
Fabrizio Grosa
Keyword(s):  
Energy Loss ◽  
D Meson ◽  
Charm Quark ◽  
Elliptic Flow ◽  
Heavy Ion ◽  
Event Shape ◽  
Nuclear Modification Factor ◽  
Nuclear Modification ◽  
Modification Factor ◽  
First Time

Heavy-flavour hadrons are recognised as a powerful probe for the characterisation of the deconfined medium created in heavy-ion collisions, the Quark-Gluon Plasma (QGP). The ALICE Collaboration measured the production of D0, D+, D*+ and [see formula in PDF] mesons in Pb–Pb collisions at [see formula in PDF] = 5.02 TeV. The measurement of the nuclear modification factor (RAA) provides a strong evidence of the in-medium parton energy loss. The comparison between the [see formula in PDF] and the non-strange D-meson RAA can help to study the hadronisation mechanism of the charm quark in the QGP. In mid-central collisions, the measurement of the D-meson elliptic flow v2 at low transverse momentum (pT) gives insight into the participation of the charm quark into the collective motion of the system, while at high pT it constrains the path-length dependence of the energy loss. The [see formula in PDF] v2, measured for the first time at the LHC, is found to be compatible to that of non-strange D mesons and positive with a significance of about 2.6 σ. The coupling of the charm quark to the light quarks in the underlying medium is further investigated for the first time with the application of the Event-Shape Engineering (ESE) technique to D-meson elliptic flow.

scholarly journals Impact of scale, nuclear PDF and temperature variations on the interpretation of medium-modified jet production data from the LHC

2021 ◽  
Vol 2021 (4) ◽  
Author(s):  
A. Andronic ◽  
J. Honermann ◽  
M. Klasen ◽  
C. Klein-Bösing ◽  
J. Salomon
Keyword(s):  
Distribution Functions ◽  
Production Data ◽  
Crossover Temperature ◽  
Parton Distribution Functions ◽  
Temperature Variations ◽  
Nuclear Modification Factor ◽  
Nuclear Modification ◽  
Modification Factor ◽  
The Impact ◽  
Jet Structure

Abstract In this paper we present a study of in-medium jet modifications performed with JEWEL and PYTHIA 6.4, focusing on the uncertainties related to variations of the perturbative scales and nuclear parton distribution functions (PDFs) and on the impact of the initial and crossover temperature variations of the medium. The simulations are compared to LHC data for the jet spectrum and the nuclear modification factor. We assess the interplay between the choice of nuclear PDFs and different medium parameters and study the impact of nuclear PDFs and the medium on the jet structure via the Lund plane.

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