Jun 5 – 9, 2023
Genova, Italy
Europe/Rome timezone

Open Strange Mesons in (magnetized) nuclear matter

Jun 9, 2023, 10:00 AM
DAD - Room 1A (Genova, Italy)

DAD - Room 1A

Genova, Italy

Contributed Hadrons in hot and nuclear environment Hadrons in hot and nuclear environment


Ankit Kumar (Indian Institute of Technology Delhi)


We investigate the mass modifications of open strange mesons (vector $K^*$ and axial vector $K_1$) in (magnetized) isospin asymmetric nuclear matter using Quantum Chromodynamics sum rule (QCDSR) approach. The in-medium decay widths of $K^*$ $\rightarrow$ $K\pi$ and $K_1$ $\rightarrow$ $K^*\pi$ are studied from the mass modifications of $K_1$, $K^*$ and $K$ mesons, using a light quark-antiquark pair creation model, namely the ${}^3 P_0$ model. The in-medium decay width for $K_1$ $\rightarrow$ $K^*\pi$ is compared with the decay widths calculated using a phenomenological Lagrangian, derived from a chiral SU(3) model. The effects of magnetic fields are also studied on the mass and the partial decay width of the vector $K^*$ meson decaying to $K\pi$. Within the QCD sum rule approach, the medium effects on the masses of the open strange mesons are calculated through the light quark condensates and the gluon condensates in the hadronic medium. The quark condensates are calculated from the medium modifications of the scalar fields ($\sigma$, $\zeta$, and $\delta$) in the mean field approximation within a chiral SU(3) model, while the scalar gluon condensate is obtained from the medium modification of a scalar dilaton field ($\chi$), which is introduced within the model to imitate the scale invariance breaking of QCD.

Primary authors

Amruta Mishra (Department of Physics, IIT Delhi) Ankit Kumar (Indian Institute of Technology Delhi)

Presentation materials

Peer reviewing