Particle Physics
The decay process b → π^+π^- describes the transition of a bottom quark (b) into a pair of pions, specifically a positively charged pion ($$ ext{π}^+$$) and a negatively charged pion ($$ ext{π}^-$$). This process is significant in B-physics, particularly in flavor-changing processes, as it illustrates how quark flavors can change and how weak interactions facilitate these transformations.
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