R. Watanabe

activity

20122026

most citedNew physics in the weak interaction of

B ˉ \to D^{(*)} τ ν ˉ

242 citations · 682 across the 17 of their papers we have counts for

collaborators

Showing 2025Show all

4 papers · 1 filter

hep-ph2025

Constructing heavy-quark sum rule for $b \to c$ meson and baryon decays

Motoi Endo, Syuhei Iguro, Satoshi Mishima +1

We study heavy-hadron semileptonic decays proceeding via $b \to c$ transition, such as $B \to D^{(*)} τ ν ˉ_{τ}$ and $Λ_{b} \to Λ_{c} τ ν ˉ_{τ}$ . In the heavy-quark limit, where the heavy-…

hep-ph2025

$b \to c$ semileptonic sum rule: Current status and prospects

Motoi Endo, Syuhei Iguro, Satoshi Mishima +1

The $b \to c$ semileptonic sum rules provide relations between the decay rates of $B \to D^{(*)} τ ν ˉ$ and $Λ_{b} \to Λ_{c} τ ν ˉ$ . Starting from the heavy quark and zero-recoil lim…

hep-ph2025

$b \to c$ semileptonic sum rule: Extension to angular observables

Motoi Endo, Syuhei Iguro, Tim Kretz +2

Lepton flavor universality is a key prediction of the Standard Model of particle physics and any violation of it immediately indicates the existence of new physics. Given the recen…

hep-ph2025

Heavy quark symmetry behind $b \to c$ semileptonic sum rule

Motoi Endo, Syuhei Iguro, Satoshi Mishima +1

Lepton flavor universality violations in semileptonic $b \to c$ transitions have garnered attention over a decade. For $R_{H_c}={\rm{BR}}(H_b\to H_c τ\barν_τ)/{\rm{BR}}(H_b\to H_c…

Constructing heavy-quark sum rule for b→c meson and baryon decays

b→c semileptonic sum rule: Current status and prospects

b→c semileptonic sum rule: Extension to angular observables

Heavy quark symmetry behind b→c semileptonic sum rule

Constructing heavy-quark sum rule for $b \to c$ meson and baryon decays

$b \to c$ semileptonic sum rule: Current status and prospects

$b \to c$ semileptonic sum rule: Extension to angular observables

Heavy quark symmetry behind $b \to c$ semileptonic sum rule