Impact of $B\to K_0^{\ast }{\ell }^{+}{\ell }^{-}$ on the New Physics search in $B\to K^{\ast }{\ell }^{+}{\ell }^{-}$ decay

Abstract

We discuss the uncertainty related to the amount of unwanted $B\to K_0^{\ast }(K\pi ){\ell }^{+}{\ell }^{-}$ events in the sample of $B\to K^{\ast }(K\pi ){\ell }^{+}{\ell }^{-}$. Those events can increase the measured differential decay rate by up to 10% in the low $q^2$ region, and can be a source of non-negligible uncertainty in the full angular distribution of the $B\to K^{\ast }(K\pi ){\ell }^{+}{\ell }^{-}$ decay. Although the transverse asymmetries should be unaffected by the presence of the $S$-wave $K\pi$ pairs, coming from the scalar $K_0^{\ast }$ meson, we show that in practice their normalization might be sensitive to those events and could entail a sizable uncertainty in transverse asymmetries around $q^2=2Ge{V}^2$. For other $q^2$'s that error is under about 10%.

16 pages [as published in NPB]

References in corpus (13)

• Measurement of the Differential Branching Fraction and Forward-Backword Asymmetry for B->K(*)l+l-
• Form Factors from Light-Cone Sum Rules with B-Meson Distribution Amplitudes
• The K^*_0(800) scalar resonance from Roy-Steiner representations of pi K scattering
• New observables in the decay mode anti-B --> anti-K*0 l+ l-
• Cornering New Physics in b --> s Transitions
• New physics reach of the decay mode $\bar{B}\to {\bar{K}}^{\ast 0}{\ell }^{+}{\ell }^{-}$
• $B_s\to f_0(980)$ form factors and $B_s$ decays into $f_0(980)$
• Measurement of the isospin asymmetry in $B\to K^{(\ast )}{\mu }^{+}{\mu }^{-}$ decays
• Future prospects for the determination of the Wilson coefficient $C_{7\gamma }^{\prime }$
• Analysis of the D+ --> K- pi+ e+ nu_e decay channel
• Analysis of rare (B -> K_0*(1430) l^+ l^- decay) within QCD sum rules
• $B\to K^{\ast }{\ell }^{+}{\ell }^{-}$ Forward-backward Asymmetry and New Physics
• Squark Flavor Implications from B --> K(*) l+ l-

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