Azimuthal angular correlations of D mesons with charged particles in pp collisions at √s = 7 TeV and p-Pb collisions at √s = 7 TeV and p-Pb collisions at √SNN = 5.02 TeV with the ALICE experiment at the LHC

The ALICE (A Large Ion Collider Experiment) detector at the LHC (Large Hadron Collider) is dedicated to the study of the properties of the hot and dense QCD matter (Quark–Gluon Plasma) produced in the nucleus-nucleus collisions at high energy. Heavy quarks (charm and beauty), having large masses, are produced in the hard-parton scattering in the early stages of the collision. Therefore, they experience the whole evolution of the hot and dense medium, representing an important tool for its characterization. The study of angular correlations between D mesons and charged particles in Pb–Pb collisions gives insight about the energy loss of charm quarks and the medium-induced modification of its fragmentation into jets. Moreover, pp collisions help to understand the production mechanisms, fragmentation and hadronization of charm quarks and acts as a reference for p–Pb and Pb–Pb measurements. In this article, the measurement of azimuthal correlations between D0 meson and charged particles in pp collisions at $\sqrt s = 13$ TeV is presented. The collisional energy dependence of the correlations is extracted from the comparison with the results at $\sqrt s = 7$ TeV. The data are also compared with simulations performed with different event generators.

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Azimuthal correlations of D mesons with charged particles in pp collisions at √s = 13 TeV with the ALICE experiment at the LHC

10.22323/1.321.0042 ◽

2018 ◽

Author(s):

Samrangy Sadhu

Keyword(s):

D Mesons ◽

Charged Particles ◽

Pp Collisions ◽

Alice Experiment ◽

Azimuthal Correlations

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Centrality dependent long-range angular correlations of intermediate-p T D-mesons and charged particles in pPb collisions at the LHC energy

Journal of Physics G Nuclear and Particle Physics ◽

10.1088/1361-6471/aaec2a ◽

2018 ◽

Vol 45 (12) ◽

pp. 125103 ◽

Cited By ~ 2

Author(s):

Somnath Kar ◽

Subikash Choudhury ◽

Samrangy Sadhu ◽

Premomoy Ghosh

Keyword(s):

Long Range ◽

D Mesons ◽

Charged Particles ◽

Angular Correlations

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Study of in-Medium Energy Loss with Heavy-Flavour Correlations in pp and Pb-Pb Collisions with ALICE at the LHC

Proceedings ◽

10.3390/proceedings2019010043 ◽

2019 ◽

Vol 10 (1) ◽

pp. 43

Author(s):

Samrangy Sadhu

Keyword(s):

Monte Carlo ◽

Energy Loss ◽

D Mesons ◽

Charged Particles ◽

Hadronic Decays ◽

Medium Energy ◽

Pp Collisions ◽

Charmed Baryons ◽

Azimuthal Correlations ◽

Place Studies

The azimuthal correlations between heavy-flavour hadrons or heavy-flavour decay electrons with charged particles in Pb-Pb collisions give insight on the modification of charm-jet properties in nucleus-nucleus collisions and the mechanisms through which heavy quarks in-medium energy-loss takes place. Studies in pp collisions, besides constituting the necessary baseline for nucleus-nucleus measurements, are important for testing expectations from pQCD-inspired Monte Carlo generators. In ALICE heavy-flavour hadrons are studied via their fully reconstructed hadronic decays (D mesons and Λ c baryon), via semileptonic decays of charmed baryons ( Λ c , Ξ c ) and via leptons coming from heavy-flavour hadron decays. In particular in the central barrel, η < | 0 . 8 | , the electrons from heavy-flavour hadron decays are investigated. This proceeding will include the study of azimuthal correlations of D mesons with charged particles in pp collisions and heavy-flavour decay electrons with charged particles in pp and Pb-Pb collisions at different energies available at the LHC. The Experimental results will also be compared with the expectations from POWHEG and PYTHIA event generators.

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Multiplicity Dependence of Heavy-Flavour Correlations with Charged Particle and Collective Effects in p–Pb Collisions at √sNN = 5.02 TeV with ALICE at LHC

Proceedings ◽

10.3390/proceedings2019010020 ◽

2019 ◽

Vol 10 (1) ◽

pp. 20

Author(s):

Marianna Mazzilli

Keyword(s):

Heavy Quark ◽

D Mesons ◽

Charged Particles ◽

Collective Effects ◽

Initial State ◽

Angular Correlations ◽

Azimuthal Correlations ◽

Charged Hadrons ◽

Hadron Decay ◽

Quark Production

Azimuthal correlation studies of heavy-flavour particles with charged particles in p–Pb collisions can give an insight into the cold nuclear matter effects on heavy-quark production and hadronization into heavy-flavour jets. Multiplicity-dependent measurements of angular correlations of heavy-flavour particles with charged hadrons allow us to investigate the collective behavior of the system and the initial state effects on heavy flavour hadron production. In addition, they can reveal possible modifications of the heavy-quark fragmentation and hadronization at different multiplicities. We present ALICE measurements of azimuthal correlations of prompt D-mesons with charged hadrons as a function of the multiplicity in p–Pb collisions at s NN = 5.02TeV. Moreover, the elliptic flow ( v 2 ) of heavy-flavour hadron decay electrons in high-multiplicity p–Pb collisions at s NN = 5.02 TeV, obtained using correlations with charged particles, is reported.

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