Fermi motion parameter $p_F$ of $B$ meson from relativistic quark model

Abstract

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 extract the possible 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, and we also derived the eigenvalue of $E_B\simeq 5.5$ GeV, which is is reasonable agreement with $m_B=5.28$ GeV.

Comments: 11 pages (no figures)