20,345
edits
Changes
no edit summary
==Key Stage 5==
===Meaning===
A '''down-quark''' ('''d''') is a type of [[quark]] with a [[Electrical Charge|charge]] of <math>-\frac{1}{3}</math>.
===About Down-quarks===
: The '''down-quark''' is denoted with a lower case '''d'''.
: There are two '''down-quarks''' in a [[neutron]] and only one '''down-quark''' in a [[proton]].
| style="height:20px; width:120px; text-align:center;"|
[[Down-quark]]
| style="height:20px; width:120px; text-align:center;"|<math>qQ=-\frac{1}{3}</math>
| style="height:20px; width:120px; text-align:center;"|<math>S=0</math>
| style="height:20px; width:120px; text-align:center;"|<math>bB=+\frac{1}{3}</math>| style="height:20px; width:120px; text-align:center;"|<math>lL=0</math>
|-
| style="height:20px; width:120px; text-align:center;"|
[[Antidown-quark]]
| style="height:20px; width:120px; text-align:center;"|<math>qQ=+\frac{1}{3}</math>
| style="height:20px; width:120px; text-align:center;"|<math>S=0</math>
| style="height:20px; width:120px; text-align:center;"|<math>bB=-\frac{1}{3}</math>| style="height:20px; width:120px; text-align:center;"|<math>lL=0</math>
|}