Performance Study Of Charmed Baryon Reconstruction With ALICE

According to QCD calculations on the lattice,as well as to several measurements performed at the SPS,RHIC,and LHC facilities,a state of matter composed of strongly-interacting deconfined quarks and gluons(the Quark-Gluon Plasma,QGP)is formed in heavy-ion collisions at ultra-relativistic energies.The study of open heavy-flavour physics allows us to investigate the key properties of the QGP and the microscopic processes ongoing in the medium produced in heavy-ion collisions at relativistic energies.Heavy quarks(charm and beauty)are produced mainly in initial hard parton scatter-ings on shorter time scales compared to the QGP formation time,and their further pro-duction and annihilation rates in the medium are expected to be very small throughout the evolution of the system.Therefore,they serve as penetrating probes that traverse the hot and dense medium,interact with the partonic constituents of the plasma and lose energy.The measurement of open charm and beauty production in Pb-Pb collisions at the LHC gives access to the mechanisms of heavy-quark transport and energy loss in hot and dense QCD matter.Understanding the interactions of heavy quarks with the medium requires precise measurements over a wide momentum range not only in heavy-ion colli-sions,but also in smaller systems like pp collisions,which also test next-to-leading order perturbative QCD calculations,and proton-nucleus collisions,which are sensitive to Cold Nuclear Matter effects(CNM),such as gluon saturation,shadowing,kT broadening and energy loss in cold nuclear matter.With the ALICE detectors,open heavy flavours are measured via the full reconstruc-tion of hadronic decays of non-strange D mesons,Ds+ mesons and ?c+,and the semi-electronic decay channels of electrons from open charm and open beauty hadron decays and(?)c0 at mid-rapidity and,via the semi-muonic decays at forward rapidity.The measure-Gents of ?c+ and(?)c0 production can shed light on charm hadronisation mechanisms in the absence of the hot and dense QCD medium.The analysis of the pT-differential spectra and of the azimuthal anisotropy of heavy-flavour signals in nucleus-nucleus collisions provides a crucial piece of information to achieve a microscopic picture of the system.Anisotropic flow studies rely on measuring the coefficients vn of the Fourier expansion of the azimuthal particle distribution.They have been essential in establishing that the QGP is a strongly coupled,almost perfect fluid.The study of the heavy-flavour azimuthal anisotropy(v2)allows constraining the path-length dependence of energy loss.The positive elliptic flow of open heavy flavour particles observed in semi-central Pb-Pb collisions at LHC energies suggested that the heavy quarks undergone strong in-teractions in the deconfined QCD medium in a wide rapidity window and participated in the collective motion of the medium.Recent observations in small systems,such as pp and p-Pb collisions,show remarkable similarities among these systems,which are highly suggestive of the presence of collectivity.To further explore the origin the collective-like effects observed in pp and p-Pb collisions,more differential studies with Event-Shape Engineering technique naturally links soft and hard processes that occur in the collision and allows us to study their interplay and to shed light on the level of heavy-quark ther-malisation and coupling to the system.In this contribution,the production yield of ?c+ via open heavy-flavour hadron decay measured at mid-rapidity(|?|<0.8)in p-Pb collisions with ALICE detector will be pre-sented.I also present the the second-order flow vector q2 of charged particles at forward rapidity(2.5<?<4)and mid-rapidity in p-Pb collisions at(?)= 5.02 TeV mea-sured with the ALICE TPC and VO detector.At final,the production yield of multi-charm baryon ?ccc with new upgrade-ITS will be discussed as well.