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- W2950102677 abstract "The $B$ meson semileptonic modes to $rho(770)$ and $a_1 (1260)$ are useful to pin down possible non Standard Model effects. The 4d differential $bar B to rho(pi pi) ell^- bar nu_ell$ and $ bar B to a_1 (rho pi) ell^- bar nu_ell$ decay distributions are computed in SM and in extensions involving new Lepton Flavour Universality violating semileptonic $b to u$ operators. The Large Energy limit for the light meson is also considered for both modes. The new effective couplings are constrained using the available data, and several observables in $bar B to rho(pipi) ell^- bar nu_ell$ in which NP effects can be better identified are selected, using the angular coefficient functions. The complementary role of $bar B to rho(pi pi) ell^- bar nu_ell$ and $bar B to a_1 (rho pi) ell^- bar nu_ell$ is discussed." @default.
- W2950102677 created "2019-06-27" @default.
- W2950102677 creator A5019267539 @default.
- W2950102677 creator A5053455798 @default.
- W2950102677 creator A5059988262 @default.
- W2950102677 date "2019-10-31" @default.
- W2950102677 modified "2023-09-26" @default.
- W2950102677 title "Probing new physics with <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:mover accent=true><mml:mrow><mml:mi>B</mml:mi></mml:mrow><mml:mrow><mml:mo stretchy=false>¯</mml:mo></mml:mrow></mml:mover><mml:mo stretchy=false>→</mml:mo><mml:mi>ρ</mml:mi><mml:mo mathvariant=bold stretchy=false>(</mml:mo><mml:mn>770</mml:mn><mml:mo mathvariant=bold stretchy=false>)</mml:mo><mml:msup><mml:mrow><mml:mo>ℓ</mml:mo></mml:mrow><mml:mrow><mml:mo>−</mml:mo…" @default.
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- W2950102677 doi "https://doi.org/10.1103/physrevd.100.075037" @default.
- W2950102677 hasPublicationYear "2019" @default.
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