$B_s^0 \to D_s^-a_1^+(D_s^- \to ϕπ^-, D_s^- \to K^{*0}K^-)$ decay channel in the ATLAS $B_s^0$-mixing studies

A. V. Bannikov; G. A. Chelkov; Z. K. Silagadze

paper

$B_{s}^{0} \to D_{s}^{-} a_{1}^{+} (D_{s}^{-} \to ϕ π^{-}, D_{s}^{-} \to K^{* 0} K^{-})$ decay channel in the ATLAS $B_{s}^{0}$ -mixing studies

arXiv:hep-ph/9802434

Abstract

It is shown, using a track-level simulation, that the use of the $D_{s}^{-} \to K^{* 0} K^{-}$ decay channel for $D_{s}^{-}$ reconstruction, in additioon with the previously studied $D_{s}^{-} \to ϕ π^{-}$ mode, enables two fold gain in the ATLAS $B_{s}^{0}$ -mixing signal statistics through $B_{s}^{0} \to D_{s}^{-} a_{1}$ $B_{s}^{0}$ -decay channel. A new modification of the amplitude fit method is suggested for the $x_{s}$ determination. Some general aspects of the $B_{s}^{0}$ -mixing phenomenon is illustrated by pictures of Casimir Malevich, Maurits Cornelis Escher and Salvador Dali.

23 pages, LaTex, 7 figures and 4 pictures

Bs0​→Ds−​a1+​(Ds−​→ϕπ−,Ds−​→K∗0K−) decay channel in the ATLAS Bs0​-mixing studies

Abstract

$B_{s}^{0} \to D_{s}^{-} a_{1}^{+} (D_{s}^{-} \to ϕ π^{-}, D_{s}^{-} \to K^{* 0} K^{-})$ decay channel in the ATLAS $B_{s}^{0}$ -mixing studies