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- W2145012082 abstract "We study semileptonic and radiative $B$ decays involving the strange tensor meson ${K}_{2}^{*}(1430)$ in the final state. Using the large energy effective theory (LEET) techniques, we formulate the $Bensuremath{rightarrow}{K}_{2}^{*}$ transition form factors in large recoil region. All the form factors can be parametrized in terms of two independent LEET functions ${ensuremath{zeta}}_{ensuremath{perp}}$ and ${ensuremath{zeta}}_{ensuremath{parallel}}$. The magnitude of ${ensuremath{zeta}}_{ensuremath{perp}}$ is estimated from the data for $mathcal{B}(Bensuremath{rightarrow}{K}_{2}^{*}(1430)ensuremath{gamma})$. Assuming a dipole ${q}^{2}$ dependence for the LEET functions and ${ensuremath{zeta}}_{ensuremath{parallel}}/{ensuremath{zeta}}_{ensuremath{perp}}=1.0ifmmodepmelsetextpmfi{}0.2$, for which the former consists with the QCD counting rules, and the latter is favored by the $Bensuremath{rightarrow}ensuremath{phi}{K}_{2}^{*}$ data, we investigate the decays $Bensuremath{rightarrow}{K}_{2}^{*}{ensuremath{ell}}^{+}{ensuremath{ell}}^{ensuremath{-}}$ and $Bensuremath{rightarrow}{K}_{2}^{*}ensuremath{nu}overline{ensuremath{nu}}$, where the contributions due to ${ensuremath{zeta}}_{ensuremath{parallel}}$ are suppressed by ${m}_{{K}_{2}^{*}}/{m}_{B}$. For the $Bensuremath{rightarrow}{K}_{2}^{*}{ensuremath{ell}}^{+}{ensuremath{ell}}^{ensuremath{-}}$ decay, in the large recoil region where the hadronic uncertainties are considerably reduced, the longitudinal distribution $d{F}_{L}/ds$ is reduced by 20--30% due to the flipped sign of ${c}_{7}^{mathrm{eff}}$ compared with the standard model result. Moreover, the forward-backward asymmetry zero is about $3.4text{ }text{ }{mathrm{GeV}}^{2}$ in the standard model, but changing the sign of ${c}_{7}^{mathrm{eff}}$ yields a positive asymmetry for all values of the invariant mass of the lepton pair. We calculate the branching fraction for $Bensuremath{rightarrow}{K}_{2}^{*}ensuremath{nu}overline{ensuremath{nu}}$ in the standard model. Our result exhibits the impressed resemblance between $Bensuremath{rightarrow}{K}_{2}^{*}(1430){ensuremath{ell}}^{+}{ensuremath{ell}}^{ensuremath{-}}$, $ensuremath{nu}overline{ensuremath{nu}}$, and $Bensuremath{rightarrow}{K}^{*}(892){ensuremath{ell}}^{+}{ensuremath{ell}}^{ensuremath{-}}$, $ensuremath{nu}overline{ensuremath{nu}}$." @default.
- W2145012082 created "2016-06-24" @default.
- W2145012082 creator A5019296315 @default.
- W2145012082 creator A5088771278 @default.
- W2145012082 date "2009-06-08" @default.
- W2145012082 modified "2023-09-24" @default.
- W2145012082 title "Radiative and semileptonic<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mi>B</mml:mi></mml:math>decays involving the tensor meson<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:msub><mml:mi>K</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:mo>*</mml:mo><mml:mo stretchy=false>(</mml:mo><mml:mn>1430</mml:mn><mml:mo stretchy=false>)</mml:mo></mml:math>in the standard model and beyond" @default.
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- W2145012082 doi "https://doi.org/10.1103/physrevd.79.114008" @default.
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