The qq$\bar{\mathbf{q}}$ component in the constituent quark generates the pion cloud of the nucleon

Details The qq$\bar{\mathbf{q}}$ component in the constituent quark generates the pion cloud of the nucleon The qq$\bar{\mathbf{q}}$ component in the constituent quark generates the pion cloud of the nucleon

2011-07-29

arxiv.org/abs/1107.5977v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Scientific paper

The spin properties and the flavor asymmetric sea of the nucleon can be well explained by assuming that each constituent quark is surrounded with about 30% probability by a quark-antiquark pair coupled to the pion quantum numbers. We show that about one quarter of these quark-antiquark pairs show up as the pion in $\p\to\n\pi^+$ and $\p\to\p\pi^0$ fluctuation in agreement with the observed value in the ($\e+\p\to\e+$ forward neutron+X) experiment.

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