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• W4313304054 abstract "We present the next-to-next-to-leading order (NNLO) QCD corrections to the decay constants for both the pseudoscalar and vector beauty-charmed mesons $B_{c}$ and $B^*_{c}$ in nonrelativistic QCD effective theory. Explicit NNLO calculation verified that the $B_c$ decay constant from pseudoscalar current is identical with the $B_c$ decay constant from axial-vector current. The NNLO result for the vector decay constant of $B^*_{c}$ meson is novel. Combined with the latest extraction of nonrelativistic QCD long-distance matrix elements of $B_c$ meson, we give the branching ratios of leptonic decays of $B_{c}$ and $B^*_{c}$ mesons. In addition, the novel anomalous dimension for the flavor-changing heavy quark vector current in nonrelativistic QCD effective theory are helpful to investigate the threshold behaviours of two different heavy quarks." @default.
• W4313304054 created "2023-01-06" @default.
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• W4313304054 date "2022-12-30" @default.
• W4313304054 modified "2023-10-14" @default.
• W4313304054 title "Next-to-next-to-leading order matching of beauty-charmed meson <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:msub><mml:mi>B</mml:mi><mml:mi>c</mml:mi></mml:msub></mml:math> and <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:msubsup><mml:mi>B</mml:mi><mml:mi>c</mml:mi><mml:mo>*</mml:mo></mml:msubsup></mml:math> decay constants" @default.
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• W4313304054 doi "https://doi.org/10.1103/physrevd.106.114037" @default.
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