Predicting Quadrupole deformation via anisotropic flow and transverse momentum spectra in isotopic $\mathbf{\prescript{128-135}{54}{\mathrm{Xe}}}$ collisions at LHC
arxiv(2023)
摘要
In the hydrodynamical description of heavy-ion collisions, the elliptic flow
$\mathrm{v_{2}}$ and triangular flow $\mathrm{v_{3}}$ are sensitive to the
quadrupole deformation $\mathrm{\beta_{2}}$ of the colliding nuclei. We produce
$\mathrm{v_{2}}$ and $\mathrm{v_{3}}$ ratios qualitatively and quantitatively
in most-central Xe-Xe collisions at 5.44 TeV. By employing HYDJET++ model, we
study the sensitivity of anisotropic flow coefficients and mean transverse
momentum to the quadrupole deformation and system-size in isotopic Xe-Xe
collisions. Flow observables strongly depend on the strength of nucleon-nucleon
scattering occuring in even-A and odd-A nuclei. Flow for odd-A nuclei is
suppressed in comparison to flow in even-A collisions. There exists a linear
inter-dependence between $\mathrm{p_{T}}$ integrated anisotropic flow and
nuclear deformation. Mean transverse momentum signifies the fireball
temperature in body-body and tip-tip collisions. There exists a negative linear
correlation of $\mathrm{\langle p_{T} \rangle}$ with collision system-size and
a positive correlation with nuclear deformation. Flow measurements in
high-energy, heavy-ion collisions using isotopic collision systems, offer a new
precision tool to study nuclear structure physics. Observation of nuclear
structure properties like nuclear deformation in a heavy-ion collision such as
this would be very interesting.
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