# Semileptonic B ->pi decays from an Omnes improved nonrelativistic constituent quark model

@article{Albertus2005SemileptonicB, title={Semileptonic B ->pi decays from an Omnes improved nonrelativistic constituent quark model}, author={Conrado Albertus and J. M. Flynn and E. Hern'andez and J. Nieves and J. M. Verde--Velasco}, journal={Physical Review D}, year={2005}, volume={72}, pages={033002} }

The semileptonic B{yields}{pi}l{sup +}{nu}{sub l} decay is studied starting from a simple quark model which includes the influence of the B* pole. To extend the predictions of a nonrelativistic constituent quark model from its region of applicability near q{sub max}{sup 2}=(m{sub B}-m{sub {pi}}){sup 2} to all q{sup 2} values accessible in the physical decay, we use a novel multiply subtracted Omnes dispersion relation, which considerably diminishes the form-factor dependence on the elastic {pi… Expand

#### 21 Citations

Study of exclusive semileptonic and nonleptonic decays of B-c in a nonrelativistic quark model

- Physics
- 2006

We present results for different observables measured in semileptonic and nonleptonic decays of the B{sub c}{sup -} meson. The calculations have been done within the framework of a nonrelativistic… Expand

B¯s→K semileptonic decay from an Omnès improved constituent quark model

- Physics
- 2014

Abstract We study the f + form factor for the semileptonic B ¯ s → K + l − ν ¯ l decay in a constituent quark model. The valence quark estimate is supplemented with the contribution from the B ¯ ⁎… Expand

CP violation and kaon-pion interactions in B --> K pi+ pi- decays

- Physics
- 2009

We study $CP$ violation and the contribution of the strong kaon-pion interactions in the three-body $B\ensuremath{\rightarrow}K{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ decays. We… Expand

$\bar B_s\to K$ semileptonic decay from an Omn\`es improved nonrelativistic quark model

- Physics
- 2014

We study the $f^+$ form factor for the $\bar B_s\to K^+\ell^-\bar\nu_\ell$ semileptonic decay in a nonrelativistic quark model. The valence quark contribution is supplemented with a $\bar B^*$-pole… Expand

|Vub| from exclusive semileptonic B→π decays

- Physics
- 2007

Abstract We use Omnes representations of the form factors f + and f 0 for exclusive semileptonic B → π decays, paying special attention to the treatment of the B ∗ pole and its effect on f + . We… Expand

|V(ub)| from UTangles and B ---> pi l nu

- Physics
- 2006

The angles of the CKM unitarity triangle are now known well enough to allow a determination of its sides from global fits, with good accuracy. Assuming that new physics does not affect the angles,… Expand

Study of the semileptonic decays B→π, D→π and D→K

- Physics
- 2006

Abstract.The semileptonic decay B→π is studied starting from a simple quark model that takes into into account the effect of the B*-resonance. A novel, multiply subtracted, Omnès dispersion relation… Expand

Heavy-to-light scalar form factors from Muskhelishvili–Omnès dispersion relations

- Physics
- 2018

By solving the Muskhelishvili–Omnès integral equations, the scalar form factors of the semileptonic heavy meson decays $$D\rightarrow \pi \bar{\ell }\nu _\ell $$D→πℓ¯νℓ, $$D\rightarrow {\bar{K}}… Expand

|V_{ub}| from B-> pi e nu

- Physics
- 2006

I discuss the results for $|V_{ub}|$ obtained from $B\to\pi e \nu$ using the form factor $f_+(q^2)$ from QCD sum rules on the light-cone and unquenched lattice calculations; the shape of $f_+(q^2)$… Expand

Exclusive c→s,d semileptonic decays of ground-state spin-1/2 doubly charmed baryons

- Physics
- 2011

Abstract We evaluate exclusive semileptonic decays of ground-state spin-1/2 doubly heavy charmed baryons driven by a c → s , d transition at the quark level. Our results for the form factors are… Expand