$W_R$ effects on $CP$ angles determination at a $B$ factory

Abstract

The right-handed charged current gauge boson $W_R$ can affect significantly on the determination of the $CP$ violation angles to be measured at $B$ factories if the right-handed current quark mixing matrix $V^R$ is taken to a specific form to satisfy the bounds by neutral $K$ meson systems. The $W_R$ contribution can be sizable in $B^0$-$\overline{B^0}$ mixing and tree level $b$ quark decay. The deviation of $CP$ angles in unitarity triangle from the standard model values can be as large as $-37^{\circ }$ or $+22^{\circ }$ for ${\varphi }_3$ ($\gamma$), and $66^{\circ }\sim 115^{\circ }$ for ${\varphi }_1$ ($\beta$) and ${\varphi }_2$ ($\alpha$).

Comments: 13 pages, LaTeX with epsfig.sty for figures, 5 PS figures in tar+gzip+uuencoded format full PS file with text and figures available on http://k2.sci.toyama-u.ac.jp/b-phys/