Mesons from Laser-Induced Processes in Ultra-Dense Hydrogen H(0)

Area of Science:

• Nuclear Physics
• Particle Physics
• Laser-Matter Interactions

Background:

• Ultra-dense hydrogen H(0) layers are a novel medium for particle generation.
• Laser-induced particle flux can contain exotic particles.

Purpose of the Study:

• To investigate the properties and composition of charged particles generated in laser-induced particle flux from ultra-dense hydrogen H(0) layers.
• To characterize meson formation, decay, and magnetic deflection.
• To compare experimental observations with theoretical predictions.

Main Methods:

• Utilizing laser pulses (< 200 mJ) on ultra-dense hydrogen H(0) layers on metal surfaces.
• Employing metal foil collectors to measure time-varying signals.
• Using magnetic deflection with a movable pin collector to analyze particle trajectories.
• Detecting muons with scintillation detectors.

Main Results:

• Observation of large signals of charged light mesons (pions and kaons) with velocities up to 0.75c.
• Measured characteristic decay time constants for meson decay.
• Magnetic deflections consistent with charged pions and kaons.
• Agreement between observed decay chains and theoretical predictions.
• Detection of muons, consistent with previous studies.
• Majority of laser-ejected MeV energy flux identified as neutral particles (neutral kaons or precursor clusters).

Conclusions:

• Ultra-dense hydrogen H(0) layers are a viable source for generating charged light mesons via laser-induced processes.
• The observed meson properties and decay patterns align with theoretical models.
• The particle flux comprises both charged mesons and a significant component of neutral particles.