Heavy quark distribution functions in heavy baryons

Details Heavy quark distribution functions in heavy baryons Heavy quark distribution functions in heavy baryons

2001-06-15

arxiv.org/abs/hep-ph/0106160v1

Phys.Rev.D64:096004,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

29 pages, 12 figures

Scientific paper

10.1103/PhysRevD.64.096004

Using the Bethe-Salpeter (B-S) equations for heavy baryons Lambda_Q, Sigma_Q, Xi_Q and Omega_Q (Q=b or c), which were established in previous work, we calculate the heavy quark distribution functions in these baryons. The numerical results indicate that these distribution functions have an obvious peak at some fraction, alpha_0, of the baryon's light-cone ``plus'' momentum component carried by the heavy quark, and that as m_Q becomes heavier this peak becomes sharper and closer to 1. The dependence of the distribution functions on various input parameters in the B-S model is also discussed. The results are seen to be qualitatively similar to an existing phenomenological model.

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