Dhau li ntawm tus nqi thiab tig (1/2 rau baryons), ob tus lej quantum tau muab rau cov khoom no: baryon tooj (B=1) thiab txawv txawv (S), uas nyob rau hauv daim ntawv tuaj yeem pom tau. sib npaug rau -1 npaug ntawm cov quarks txawv txawv suav nrog. …
Dab tsi muaj qhov txawv?
Qhov txawv ntawm ib qho particle yog qhov sib npaug ntawm qhov txawv ntawm nws cov khoom quarksNtawm rau qhov tsw ntawm quarks, tsuas yog qhov txawv txawv quark muaj qhov tsis zoo. Qhov txawv ntawm nucleons yog xoom, vim lawv tsuas muaj nce thiab nqis quarks thiab tsis muaj qhov txawv txawv (tseem hu ua sideways) quarks.
Yuav ua li cas quark muaj qhov txawv ntawm?
Cov quarks nce thiab nqis yog qhov txawv ntawm lawv cov nqi hluav taws xob sib txawv, thaum cov quarks hnyav dua txhua tus muaj tus lej quantum tshwj xeeb ntsig txog lawv cov saj. Lub pob zeb txawv txawv muaj qhov txawv, S=−1, qhov ntxim nyiam quark muaj ntxim nyiam, C=+1, thiab lwm yam.
Dab tsi yog isospin thiab txawv ntawm baryon?
Nyob rau hauv nuclear physics thiab particle physics, isospin (I) yog tus lej quantum ntsig txog cov ntsiab lus nce thiab nqis quark ntawm cov particle. Tshwj xeeb tshaj yog, isospin symmetry yog ib feem ntawm qhov tsw symmetry pom ntau dav hauv kev sib cuam tshuam ntawm baryons thiab mesons.
Koj suav qhov txawv li cas?
Qhov txawv ntawm ib qho particle yog sib npaug rau tus lej ntawm cov quarks ntawm cov particle. Kev txuag kev txawv txav yuav tsum muaj tag nrho qhov txawv txav ntawm cov tshuaj tiv thaiv lossis kev lwj (summing the strangeness of all particles) yog tib yam ua ntej thiab tom qab kev sib cuam tshuam.
