Conveners
Parallel session B3
- Volker Metag (University of Giessen)
The GlueX experiment at Jefferson Lab is uniquely suited for exclusive studies of strangeness production using a linearly polarized photon beam and the large acceptance GlueX detector. The combination of exclusive event reconstruction and access to spin observables at photon energies between 8.0 and 8.8 GeV provides a clean environment to study $t$-channel exchange processes, particularly in...
We report the first result on $\phi$ meson production in proton-nucleus (copper and carbon) collisions at J-PARC using the 30 GeV proton beam, measured via its dielectron decay channel [1]. This measurement was performed at the newly constructed high-momentum beamline at J-PARC. We employed the dielectron spectrometer developed for the J-PARC E16 experiment [2], which aims to study in medium...
This presentation reports on a re-analysis of the modification of the φ-meson mass spectrum in finite-density matter observed in the KEK-PS E325 experiment, using PHSD transport calculations.
Hadrons are considered to acquire most of their masses through spontaneous chiral symmetry breaking.
On the other hand, the quark condensate, which serves as an order parameter of spontaneous chiral...
The masses of mesons belonging to the nonet of pseudoscalar mesons are closely related to fundamental symmetry breaking in QCD. The $\eta^{\prime}$ meson, in particular, has an anomalously large mass due to the axial U(1) anomaly arising from nonperturbative gluon dynamics in the QCD vacuum. In the nuclear medium, where chiral symmetry is partially restored, a mass reduction of the...
The Lambda binding energy (B_L) of the hypertriton (Lambda-p-n) places a major constraint on the Lambda-Nucleon interaction, particularly on its spin dependence. It is also correlated with the hypertriton lifetime [1]. Recent experiments give a broad spectrum of values for B_L: from 63(+38/-31) keV (J-PARC E73 [2]) to 523+/-76 keV (A1, MAMI [3]).
In this talk I will discuss possible...
