Answer: muons

AnswerCrossword Clue
MUONSForms of leptons
MUONSElementary lepton particles
MUONSElementary particles
MUONSUnstable particles
MUONSUnstable leptons
MUONSSubatomic particles
MUONSNuclear particles
MUONSAtomic particles
MUONSCharge leptons
MUONSCatalyzing subatomic particles
MUONSUnstable subatomic particles
muonslepton similar in most respects to the electron except that it is unstable, it may be positively charged, and its mass is approximately 207 times greater; the positively charged muon is the antiparticle of the negatively charged muon
muonsMUON, a subatomic particle