Measurement of the CKM angle $$\gamma $$ in the $${{{B} ^0} \rightarrow {D} {{K} ^{*0}}}$$ channel using self-conjugate $${D} \rightarrow {{K} ^0_{\textrm{S}}} h^+ h^-$$ decays
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10052_2023_Article_12376.pdf
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Author(s)
Aaij, R.
Abdelmotteleb, A. S. W.
Beteta, C. Abellan
Abudinén, F.
Ackernley, T.
Adeva, B.
Adinolfi, M.
Adlarson, P.
Afsharnia, H.
Agapopoulou, C.
Date Issued
February 29, 2024
Journal
The European Physical Journal C
Publisher
Springer Science and Business Media LLC
Citation
The European Physical Journal C. 2024 Feb 29;84(2):206
Version
Final published version
Abstract
A model-independent study of $$C\!P$$
C P violation in $${{B} ^0} \rightarrow {D} {{K} ^{*0}} $$ B 0 → D K ∗ 0 decays is presented using data corresponding to an integrated luminosity of 9$$\text {\,fb} ^{-1}$$ \,fb - 1 collected by the LHCb experiment at centre-of-mass energies of $$\sqrt{s}=7, \, 8$$ s = 7 , 8 and 13$$\text {\,Te\hspace{-1.00006pt}V}$$ \,Te V . The CKM angle $$\gamma $$ γ is determined by examining the distributions of signal decays in phase-space bins of the self-conjugate $${D} \rightarrow {{K} ^0_{\textrm{S}}} h^+ h^-$$ D → K S 0 h + h - decays, where $$h = \pi , K$$ h = π , K . Observables related to $$C\!P$$ C P violation are measured and the angle $$\gamma $$ γ is determined to be $$\gamma =(49^{+ 22}_{-19})^\circ $$ γ = ( 49 - 19 + 22 ) ∘ . Measurements of the amplitude ratio and strong-phase difference between the favoured and suppressed $${B} ^0$$ B 0 decays are also presented.
C P violation in $${{B} ^0} \rightarrow {D} {{K} ^{*0}} $$ B 0 → D K ∗ 0 decays is presented using data corresponding to an integrated luminosity of 9$$\text {\,fb} ^{-1}$$ \,fb - 1 collected by the LHCb experiment at centre-of-mass energies of $$\sqrt{s}=7, \, 8$$ s = 7 , 8 and 13$$\text {\,Te\hspace{-1.00006pt}V}$$ \,Te V . The CKM angle $$\gamma $$ γ is determined by examining the distributions of signal decays in phase-space bins of the self-conjugate $${D} \rightarrow {{K} ^0_{\textrm{S}}} h^+ h^-$$ D → K S 0 h + h - decays, where $$h = \pi , K$$ h = π , K . Observables related to $$C\!P$$ C P violation are measured and the angle $$\gamma $$ γ is determined to be $$\gamma =(49^{+ 22}_{-19})^\circ $$ γ = ( 49 - 19 + 22 ) ∘ . Measurements of the amplitude ratio and strong-phase difference between the favoured and suppressed $${B} ^0$$ B 0 decays are also presented.
Subjects
Physics and Astronomy (miscellaneous)
Engineering (miscellaneous)
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution
Persistent DSpace Link
DOI of Published Version
10.1140/epjc/s10052-023-12376-z
