Rangarira ndima iri pasi apa uye ipapo pindura mubvunzo gare gare mumutauro mumwe chetewo sechikamu:  Passage: Lepton yokutanga ine mutoro, elektroni, yakafungidzirwa pakati pezana ramakore rechi 19 nemasayendisiti anoverengeka uye yakawanwa muna 1897 naJ. J. Thomson. Lepton yakazotevera kuonekwa yaiva muon, yakawanikwa naCarl D. Anderson muna 1936, iyo yainzi meson panguva iyoyo. Pashure pokunzvera, kwakawanwa kuti muon yakanga isina zvinhu zvinotarisirwa zve meson, asi panzvimbo pezvo yakazvibata seerekitironi, bedzi ine uremu hukuru. Zvakatora kusvikira muna 1947 kuti pfungwa ye"leptons" semhuri yezvikamu zviduku zvinyorwe. Neutrino yokutanga, neutrino yeerekitironi, yakatangwa naWolfgang Pauli muna 1930 kutsanangura zvimwe zvinhu zvokuputsika kwebeta. Yakatanga kucherechedzwa muCowan<unk>Reines neutrino experiment yakaitwa naClyde Cowan naFrederick Reines muna 1956. Muon neutrino yakawanikwa muna 1962 naLeon M. Lederman, Melvin Schwartz, naJack Steinberger, uye tau yakawanikwa pakati pa1974 na1977 naMartin Lewis Perl nevamwe vake kubva kuStanford Linear Accelerator Center uye Lawrence Berkeley National Laboratory. Tau neutrino yakaramba isingaoneki kusvikira muna July 2000, apo kubatana kweDONUT kubva kuFermilab kwakazivisa kuwanikwa kwayo. Leptons chikamu chinokosha cheStandard Model. Maerekitironi chimwe chezvinhu zvinoumba maatomu, pamwe chete nemapurotoni nemaineutron. Maatomu asina kujairika ane mioni uye taus panzvimbo pemaerekitironi anogonawo kugadzirwa, pamwe chete nemapurasitiki e lepton<unk>antilepton akadai sepositronium.  Mubvunzo: Cowan naReines vakaedza chii?
Cowan<unk>Reines neutrino