Recent theoretical work has shown that the combined measurement of the B0d to pi^+ pi^- and B0s to K^+K^- CP asymmetries, under the assumption of invariance of the strong interaction dynamics by exchanging the d and s quarks (U-spin symmetry), provides a way to determine the CKM phase gamma. A study of the LHCb senitivity of the direct and mixing-induced CP-violating observables of these decays is made and the results are presented, as well as the angle gamma sensitivity. To this purpose a selection optimization is performed and the annual yield and background-to-signal ratios for specific and combinatorial backgrounds are esimated for each B0_(d/s) to h^+ h^- decay channel.
L. Fabbri (2005). LHCb sensitivity to gamma with B_(d/s) to h^+ h^- and U-spin symmetry.
LHCb sensitivity to gamma with B_(d/s) to h^+ h^- and U-spin symmetry
FABBRI, LAURA
2005
Abstract
Recent theoretical work has shown that the combined measurement of the B0d to pi^+ pi^- and B0s to K^+K^- CP asymmetries, under the assumption of invariance of the strong interaction dynamics by exchanging the d and s quarks (U-spin symmetry), provides a way to determine the CKM phase gamma. A study of the LHCb senitivity of the direct and mixing-induced CP-violating observables of these decays is made and the results are presented, as well as the angle gamma sensitivity. To this purpose a selection optimization is performed and the annual yield and background-to-signal ratios for specific and combinatorial backgrounds are esimated for each B0_(d/s) to h^+ h^- decay channel.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
