Satoshi Mishima

collaborators

8 papers

hep-ph2026

$b \to c$ semileptonic sum rule: exploring a sterile neutrino loophole

Motoi Endo, Syuhei Iguro, Tim Kretz +1

We investigate the $b \to c$ semileptonic sum rule in the presence of a massive sterile neutrino. Recent measurements of charged-current semitauonic $B$ -meson decays exhibit a $\sim…

hep-ph2026

Semileptonic sum rules in heavy-to-light charm decays

Motoi Endo, Syuhei Iguro, Satoshi Mishima +2

We investigate semileptonic sum rules in heavy-to-light charm decays, motivated by analogous relations in $b \to c$ and $b \to u$ transitions. Focusing on the $c \to d\overline{\el…

hep-ph2026

$b \to c$ semileptonic sum rule: orbitally excited hadrons

Motoi Endo, Syuhei Iguro, Satoshi Mishima

We study semileptonic sum rules for $b \to c I ¨ I^½$ transitions involving orbitally excited charm hadrons. Starting from the amplitude-level relation implied by the heavy q…

hep-ph2026

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^{(*)} I ¨ I^ˉ ½_{I ¨} $ and $I^_{b} \to I^_{c} I ¨ I^ˉ ½_{I ¨} $ . In the heavy-quark limit, where th…

hep-ph2026

$b \to c$ 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 $B \to D^{(*)} I ¨ I^ˉ ½$ and $I^_{b} \to I^_{c} I ¨ I^ˉ ½$ . Starting from the heavy quark and zero-reco…

hep-ph2026

$b \to c$ 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…

b→c semileptonic sum rule: exploring a sterile neutrino loophole

Semileptonic sum rules in heavy-to-light charm decays

b→c semileptonic sum rule: orbitally excited hadrons

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

$b \to c$ semileptonic sum rule: exploring a sterile neutrino loophole

$b \to c$ semileptonic sum rule: orbitally excited hadrons

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