A down quark can be changed into an up quark (plus other particles perhaps) by:

Name: A down quark can be changed into an up quark (plus other particles perhaps) by:
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Question

Quizplus · Accepted Answer

The weak interaction is responsible for the process where a down quark is changed into an up quark, often observed in beta decay processes. This interaction can cause quarks to change their type (or "flavor"), which is not a feature of the gravitational, electromagnetic, or strong interactions.

A Down Quark Can Be Changed into an Up Quark