Quark Matter 2023

Study of K1 meson production in pp collisions with ALICE

5 Sept 2023, 17:30

2h 10m

Grand Ballroom, 4th floor ( Hilton of the Americas)

Poster Light and strange flavor Poster Session

Speaker

Su-Jeong Ji (Pusan National University (KR))

Description

$K_1$ and $K^{\ast }$ mesons are chiral partners whose vacuum widths are smaller than 100 MeV. This makes these mesons ideal to study possible effects of chiral symmetry restoration in heavy-ion collisions. In a recent theoretical study, the $K_1/K^{\ast }$ ratio in heavy-ion collisions is expected to be substantially larger than the statistical hadronisation model predictions. The study of the $K_1/K^{\ast }$ ratio as a function of multiplicity in different collision systems ranging from $pp$ to central heavy-ion collisions can provide crucial information on effects of the chiral symmetry restoration. The ALICE detector has an excellent capability of particle identification, so the $K_1$ meson can be measured via its hadronic decay channels such as $K_1^{-}\to {\rho }^0{K}^{-}$ and $K_1^{-}\to {\pi }^{-}{\overline{K}}^{\ast 0}$. In this poster, the feasibility study of the $K_1$ measurement in $pp$ collisions with ALICE is presented.

Presentation materials

QM2023_SJI_v3_A0.pdf