Possible Clues:

• 'Charmed' particle
• Low-fat soft cheese
• Soft cheese
• Hypothetical physics particle
• Fundamental subatomic particle — low-fat soft cheese
• Subatomic particle; cheese
• Subatomic particle that comes in "flavors"
• Accelerator creation
• A tiny bit strange?
• Subatomic particle whose flavors are scattered about this puzzle