Production of W$^{\pm}$ bosons in the semi-muonic channel at forward rapidity in ALICE

Heavy-ion collisions are the unique tool available to investigate strongly interacting matter at high energy density where the formation of a new phase of matter −the quark gluon plasma is expected. The ALICE Muon Spectrometer is specifically designed to study this phase of matter using muonic decay channels in the acceptance region between −4.0 ≤ η ≤ −2.5 (forward rapidity). ALICE has the unique ability to track and identify particle in a wide rapidity range where in the central barrel (| η |< 0.9) the particles are tracked and identified from a transverse momentum (PT ) as low as PT ∼100 MeV/c up to PT ∼100 GeV/c with the PT resolution of about 1% at 50 GeV/c and the impact parameter resolution of about 65 microns at 1 GeV/c. The Forward Muon Spectrometer is composed of 10 tracking chambers, 4 trigger chambers, absorbers as well as the 3 Tm dipole magnet. The PT resolution of the Spectrometer is ∼1% at 20 GeV/c and ∼4% at 100 GeV/c and the muons are tracked from PT as low as ∼500 MeV/c up to 100 GeV/c. This study focuses on the analysis of W± → μ± + νμ+ (ν ̄μ− ) Monte-Carlo data generated using PYTHIA 6.4.21 in the AliROOT framework in proton-proton collisions at 8 TeV and proton-proton experimental data at 7 TeV at forward rapidity. In the analysis of the experimental data the efficiency of the Tracking Chambers is 81±0.5% and 95±0.5% for the Muon Trigger Chambers, while in the simulation the efficiency of the Muon Tracker is ∼80% for the realistic case based on the conditions of 2011 PbPb data taking period and between 95-100% for the ideal case. This study exploits this tracking attributes of ALICE to investigates the feasibility of extracting W± boson in its muonic decay channel at these energies.