Practical considerations for measuring global spin alignment of vector mesons in relativistic heavy ion collisions

Abstract

Global spin alignment of vector mesons is a sensitive probe of system vorticity and particle production mechanism in relativistic heavy ion collisions. The measurement of global spin alignment is gaining increasing interest and deserves careful considerations. In this paper, we lay out a few practical issues that need to be taken care of when measuring global spin alignment of vector mesons. They are, the correction for event plane resolution, reconciling measurements made with different event planes, the correction for the effect of finite acceptance in pseudorapidity, and the consideration for measuring the azimuthal angle dependence. Insights and methodologies offered in this paper will help experiments to measure the global spin alignment properly and accurately.

6 pages. 4 figures. Accepted version by PRC

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Cited by in corpus (14)

• Evidence of spin-orbital angular momentum interactions in relativistic heavy-ion collisions
• Pattern of Global Spin Alignment of $\varphi$ and $K^{\ast 0}$ mesons in Heavy-Ion Collisions
• Global and local polarization of $\Lambda$ hyperons in Au+Au collisions at 200 GeV from STAR
• Spin alignment of vector mesons in heavy-ion collisions
• Local spin alignment of vector mesons in relativistic heavy-ion collisions
• Measurement of the J/$\psi$ polarization with respect to the event plane in Pb-Pb collisions at the LHC
• Measurement of global spin alignment of $K^{\ast 0}$and $\varphi$ vector mesons using the STAR detector at RHIC
• Spin alignment measurement of vector mesons produced in high energy collisions
• The effect of hadronic scatterings on the measurement of vector meson spin alignments in heavy-ion collisions
• Spin-Vorticity Coupling for Massive Vector Mesons
• First measurement of D${}^{\ast +}$ vector spin alignment in Pb$-$Pb collisions at $\sqrt{{\mathbf{s}}_{\mathrm{NN}}}=5.02$ TeV
• Sphaleron Transition Rates and the Chiral Magnetic Effect
• Practical considerations for the effect of finite coverage on the azimuthal dependence of global spin alignment
• Practical Considerations for Measuring Global Spin Density Matrix Elements of Vector Mesons in Heavy-Ion Collisions