Study of heavy flavour decay muons at forward rapidity in proton-proton and heavy-ion collisions at LHC energies
In high energy collision experiment, the heavy quarks (charm and beauty) are produced mainly in the initial stage of the collisions via hard partonic scattering processes. The study of heavy flavour production in proton-proton (pp) collisions at LHC energy regime provides an important test for perturbative Quantum Chromodynamics (pQCD). Furthermore, the measurement of heavy flavour production in pp collisions serves as a necessary baseline for the same measurement in proton-nucleus (p-A) and nucleus-nucleus (A-A) collisions. The productions of heavy flavour hadrons are measured by ALICE (A Large Ion Collider Experiment) detector at LHC via their semileptonic (electronic or muonic) decay. The measurement of single muons through semi-muonic decay of heavy flavour hadrons is done using the Muon Spectrometer (MS) of ALICE. ALICE has measured the heavy flavour hadron decay muon (HFM) production cross-section at forward rapidity ($-4<\eta<-2.5$) in pp collisions at $\sqrt{s} = $ 2.76 TeV, 5.02 TeV and 7 TeV respectively. In this thesis, the HFM production cross-section is measured at the highest available energy $\sqrt{s} = $ 13 TeV of LHC during Run 2 using MS of ALICE detector with an extended transverse momentum range $2