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arXiv · 1606.02000

Intrinsic charm content of the nucleon and charmness-nucleon sigma term

Shaorong Duan·C. S. An·B. Saghai
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Abstract

In the extended chiral constituent quark model, the intrinsic $c \bar{c}$ content of the nucleon is investigated. The probabilities of the quark-antiquark components in the nucleon wave functions are calculated by taking the nucleon to be admixtures of three- and five-quark components, with the relevant transitions handled {\it via} the $^{3}$P$_{0}$ mechanism. Predictions for the probability of the $c \bar{c}$ in the nucleon wave function and the charmness-nucleon sigma term are presented. Our numerical results turn out to be consistent with the predictions from various other approaches reported in the literature.

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Shaorong Duan, C. S. An, B. Saghai. 2016-06-07. Intrinsic charm content of the nucleon and charmness-nucleon sigma term. https://doi.org/10.1103/physrevd.93.114006

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