Speaker
Description
Pion femtoscopy in Au+Au collisions at $\sqrt{s_{NN}} = 3$ GeV in the STAR experiment
A. Kraeva (for the STAR Collaboration)
E-mail: annakraeva555@gmail.com
National Research Nuclear University MEPhI, Kashirskoe highway 31, Moscow, 115409, Russia
There is a method that allows directly measuring the spatio-temporal extent of the region where hadrons are emitted and the parameters of the nuclear-nuclear interaction, called femtoscopic correlation [1]. In heavy-ion collisions, femtoscopy is an important tool for studying the geometric and dynamic characteristics of the emission region.
Two-particle momentum correlations of identical particles in nuclear-nuclear collisions make it possible to extract femtoscopic parameters (radii of emission region, $R$, and correlation strength, $\lambda$) [2]. Reaction dynamic is reflected in the femtoscopic radii dependence on pair transverse momentum, $k_T$.
This work is devoted to the study of two-particle momentum correlations of identical pions produced in collisions of gold nuclei in the STAR experiment at the RHIC at $\sqrt{s_{NN}} = 3$ GeV. The extracted three-dimensional femtoscopic radii ($R_{out}$, $R_{side}$, $R_{long}$) are measured as a function of collision centrality and transverse momentum of the pairs.
References:
[1] Podgoretsky M.I. Interference correlations of identical pions, Sov. J. Nucl. Phys. – 1989. – V.20. – P.3.
[2] Lisa M.A. et al. Femtoscopy in relativistic heavy ion collisions: two decades
of progress, Annu. Rev. Nucl. Part. Sci. – 2005. – V.55. – P.357.
| The speaker is a student or young scientist | Yes |
|---|---|
| Section | 3. Intermediate and high energies, heavy ion collisions |
