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Five-quark $qqqq\bar q$ components in the $\Delta(1232)$ are shown tocontribute significantly to $\Delta(1232)\to N\pi$ decay throughquark-antiquark annihilation transitions. These involve the overlap between the$qqq$ and $qqqq\bar q$ components and may be triggered by the confininginteraction between the quarks. With a $\sim$ 10% admixture of five-quarkcomponents in the $\Delta(1232)$ the decay width can be larger by factors 2 - 3over that calculated in the quark model with 3 valence quarks, depending on thedetails of the confining interaction. The effect of transitions between the$qqqq\bar q$ components themselves on the calculated decay width is howeversmall. The large contribution of the quark-antiquark annihilation transitionsthus may compensate the underprediction of the width of the $\Delta(1232)$ bythe valence quark model, once the $\Delta(1232)$ contains $qqqq\bar q$components with $\sim$ 10% probability.Comment: accepted versio

physical review. c. nuclear physics/physical review. c, nuclear physics

Five-quark components in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>Δ</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>1232</mml:mn><mml:mo stretchy="false">)</mml:mo><mml:mo>→</mml:mo><mml:mi>N</mml:mi><mml:mi>π</mml:mi></mml:mrow></mml:math>decay

Five-quark components inΔ(1232)→Nπdecay