Springer LINK: The European Physical Journal C - Abstract Volume 4 Issue 2 (1998) pp 283-287

The European Physical Journal C

ISSN: 1434-6044 (printed version)
ISSN: 1434-6052 (electronic version)

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Abstract Volume 4 Issue 2 (1998) pp 283-287
DOI 10.1007/s100529800757

theoretical physics:
Towards isolation of new physics in ${B^0_s}$-${\bar{B}^0_s}$ mixing

Zhi-zhong Xing

Department of Physics, Nagoya University, Chikusa-ku, Nagoya 464-01, Japan (e-mail: xing@eken.phys.nagoya-u.ac.jp)

Received: 24 July 1997 / Published online: 20 February 1998

Abstract. In many extensions of the standard model, new physics is possible to contribute significantly to $B^0_s$-$\bar{B}^0_s$ mixing. We show that the effect of new physics, both its phase information and its magnitude, can be isolated from measurements of $CP$ asymmetries in the semileptonic $B_s$ transitions and in some nonleptonic $B_s$ decays into hadronic $CP$ eigenstates. We also find that the rates of $CP$-forbidden decays at the $\Upsilon (5S)$ resonance are not suppressed by the large $B_s$ mass difference, thus they can be used to extract the $CP$-violating phase of new physics in either $B^0_s$-$\bar{B}^0_s$ or $K^0$-$\bar{K}^0$ mixing.

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The European Physical Journal C

theoretical physics: Towards isolation of new physics in ${B^0_s}$-${\bar{B}^0_s}$ mixing

theoretical physics:
Towards isolation of new physics in ${B^0_s}$-${\bar{B}^0_s}$ mixing