Fermi motion parameter $p_{_F}$ of $B$ meson from relativistic quark model

Details Fermi motion parameter $p_{_F}$ of $B$ meson from relativistic quark model Fermi motion parameter $p_{_F}$ of $B$ meson from relativistic quark model

1994-12-28

arxiv.org/abs/hep-ph/9412377v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

1 figure (not included) available (kim@cskim.yonsei.ac.kr). Talk given by D.S. Hwang, at the Int. Workshop on B-physics, Nagoy

Scientific paper

The Fermi motion parameter $p_{_F}$ is the most important parameter of ACCMM model, and the value $p_{_F} \sim 0.3$ GeV has been used without clear theoretical or experimental evidence. So, we attempted to calculate the value for $p_{_F}$ theoretically in the relativistic quark model using quantum mechanical variational method. We obtained $p_{_F} \sim 0.5$ GeV, which is somewhat larger than 0.3 GeV, and we also derived the eigenvalue of $E_B \simeq 5.5$ GeV, which is in reasonable agreement with $m_B=5.28$ GeV. We also recalculated $|V_{ub}/V_{cb}|$ as a function of $p_{_F}$.

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