Abstract
Several methods exist to measure $CP$ violation observables related to the CKM unitarity triangle angle $\gamma$ using $B$ meson decays. These observables are different for every $B$ meson decay considered, although the information they contain on $\gamma$ is encoded in a similar way for all of them. This paper describes a strategy for a simultaneous measurement of $\gamma$ using several $B$ meson decays that takes into account possible correlations between them. Sensitivity studies demonstrate that the simultaneous analysis of several $B$ meson decay modes results in smaller uncertainties and improved statistical behaviour compared to a combination of standalone measurements.
Highlights
MaTshkeawanagl(eCγK≡Ma)rguðn−itaVVruciddtVVy⋆u⋆cbbÞ of the Cabibbo-Kobayashitriangle can be measured using tree-level B meson decays that involve interference between b → u and b → c quark transitions
Several methods exist to measure CP violation observables related to the CKM unitarity triangle angle γ using B meson decays
This paper describes a strategy for a simultaneous measurement of γ using several B meson decays that takes into account possible correlations between them based on the methodologies described in [J
Summary
Þ of the Cabibbo-Kobayashitriangle can be measured using tree-level B meson decays that involve interference between b → u and b → c quark transitions. Several methods can be utilized to measure different CP violation observables in these decays [4,5,6,7,8,9,10]. This paper presents results for a simultaneous approach to constrain γ from multiple B meson decays [14], allowing for the treatment of experimental candidates reconstructed under different decay hypotheses and for the. The technique employs a reduced set of CP violation parameters and is applicable to all possible measurement approaches. The results presented in this paper make a comparison between the simultaneous method and the traditional approach of fitting for each decay mode independently
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