Shedding New Light on ${\cal R} (D_{(s)}^{(\ast)} )$ and $|V_{cb}|$ from Semileptonic $\bar B_{(s)} \to D_{(s)}^{(\ast)} \ell \bar ν_{\ell}$ Decays

We compute for the first time the next-to-leading-order QCD corrections to the ${\overset{ˉ}{B}}_{(s)} \to D_{(s)}^{(*)}$ form factors at large hadronic recoil. Both the charm-quark-mass and the strange-quark-mass dependent pieces can generate the leading-power contributions to these form factors. Including further various power-suppressed contributions, we perform the combined fits of the considered form factors to both our large-recoil theory predictions and the lattice QCD results, thus improving upon the previous determinations of the lepton-flavour-universality ratios $R (D^{(*)})$ significantly.

Shedding New Light on $R (D_{(s)}^{()})$ and $∣ V_{c b} ∣$ from Semileptonic ${\overset{ˉ}{B}}_{(s)} \to D_{(s)}^{()} ℓ {\overset{ˉ}{ν}}_{ℓ}$ Decays

文献摘要

讨论

讲解博客

AI智能校验

Shedding New Light on $R (D_{(s)}^{()})$ and $∣ V_{c b} ∣$ from Semileptonic ${\overset{ˉ}{B}}_{(s)} \to D_{(s)}^{()} ℓ {\overset{ˉ}{ν}}_{ℓ}$ Decays

文献摘要

讨论

讲解博客

AI智能校验

Shedding New Light on R(D(s)(∗))R(D(s)(∗)​) and ∣Vcb∣∣Vcb​∣ from Semileptonic Bˉ(s)→D(s)(∗)ℓνˉℓBˉ(s)​→D(s)(∗)​ℓνˉℓ​ Decays

文献摘要

讨论

|讲解博客

|AI智能校验

Shedding New Light on R(D(s)(∗))R(D(s)(∗)​) and ∣Vcb∣∣Vcb​∣ from Semileptonic Bˉ(s)→D(s)(∗)ℓνˉℓBˉ(s)​→D(s)(∗)​ℓνˉℓ​ Decays

文献摘要

讨论

|讲解博客

|AI智能校验

Shedding New Light on $R (D_{(s)}^{()})$ and $∣ V_{c b} ∣$ from Semileptonic ${\overset{ˉ}{B}}_{(s)} \to D_{(s)}^{()} ℓ {\overset{ˉ}{ν}}_{ℓ}$ Decays

讲解博客

AI智能校验

Shedding New Light on $R (D_{(s)}^{()})$ and $∣ V_{c b} ∣$ from Semileptonic ${\overset{ˉ}{B}}_{(s)} \to D_{(s)}^{()} ℓ {\overset{ˉ}{ν}}_{ℓ}$ Decays

讲解博客

AI智能校验