Built on

D. Melikhov, N. Nikitin and S. Simula, Phys. Lett. B 442
1998
Earlier work this paper cites.
F. Kruger and J. Matias, “Probing new physics via the transverse amplitudes of B 0 → K ∗ 0 ( → K − π + ) l + l − B_{0}\to K^{*0}(\to K-\pi^{+})l^{+}l^{-} at large recoil,” Phys. Rev. D 71
2005
Earlier work this paper cites.
E. Lunghi and J. Matias, JHEP 0704
2007
Earlier work this paper cites.
U. Egede, T. Hurth, J. Matias, M. Ramon and W. Reece, “New observables in the decay mode B ¯ → K ¯ ∗ μ + μ − \bar{B}\to\bar{K}^{*}\mu^{+}\mu^{-} ,” JHEP 0811
Original
2008
Earlier work this paper cites.
C. Bobeth, G. Hiller and G. Piranishvili, JHEP 0807
Original
2008
Earlier work this paper cites.
W. Altmannshofer, P. Ball, A. Bharucha, A. J. Buras, D. M. Straub and M. Wick, “Symmetries and Asymmetries of B → K ∗ μ + μ − B\to K^{*}\mu^{+}\mu^{-} Decays in the Standard Model and Beyond,” JHEP 0901
Original
2009
Earlier work this paper cites.
U. Egede, T. Hurth, J. Matias, M. Ramon and W. Reece, “New physics reach of the decay mode B ¯ → K ¯ ∗ 0 ℓ + ℓ − \bar{B}\to\bar{K}^{*0}\ell^{+}\ell^{-} ,” JHEP 1010
Original
2010
Earlier work this paper cites.

Similar

A. Khodjamirian, T. Mannel, A. A. Pivovarov and Y. -M. Wang, “Charm-loop effect in B → K ( ∗ ) ℓ + ℓ − B\to K^{(*)}\ell^{+}\ell^{-} and B → K ∗ γ B\to K^{*}\gamma ,” JHEP 1009
2010
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Then

J. Matias, F. Mescia, M. Ramon and J. Virto, JHEP 1204
Original
2012
Closest in time.
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Closest in time.
C. Bobeth, G. Hiller, D. van Dyk and C. Wacker, “The Decay B → K ∗ ℓ + ℓ − B\to K^{*}\ell^{+}\ell^{-} at Low Hadronic Recoil and Model-Independent Δ B = 1 \Delta B=1 Constraints,” JHEP 1201
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2012
Closest in time.
T. Hurth and F. Mahmoudi, Nucl. Phys. B 865
Original
2012
Closest in time.
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2012

On the S-wave pollution of B-> K* l+l- observables

Matias, Joaquim

Understand

It has been argued recently that transverse asymmetries that are expected to be shielded from the presence of the S-wave (Kpi) pairs originating from the decay of a scalar K0* meson, are indeed affected by this pollution due to the impossibility to extract cleanly the normalization for these observables.

In this short note we show how using folded distributions, which is nowadays the preferred method to obtain the information from the 4-body decay mode B-> K*(-> Kpi) l+l-, one can easily bypass this problem and extract the clean observables P_{1,2,3} and also P'_{4,5,6} in a way completely free from this pollution including all lepton mass corrections.
We also show that in case one insists in using uniangular distributions to extract these observables it is possible to reduce this pollution to just lepton mass suppressed terms.
On the contrary, the S_i observables, that are by definition normalized by the full differential decay distribution, will indeed suffer from this pollution via their normalization.