Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 9, Pages -Publisher
SPRINGER
DOI: 10.1007/JHEP09(2015)104
Keywords
Rare Decays; B-Physics
Categories
Funding
- Centro de Excelencia Severo Ochoa [SEV-2012-0234]
- Explora project [FPA2014-61478-EXP]
- [FPA2011-25948]
- [SGR 1450]
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After summarizing the current theoretical status of the four-body decay B -> K*(-> K pi)mu(+)mu(-), we apply the formalism of spin-symmetries to the full angular distribution, including the S-wave part involving a broad scalar resonance K-0*. While we recover in the P-wave sector the known relation between the angular observables P-i((1)), we find in the S-wave sector two new relations connecting the coefficients of the S-wave angular distribution and reducing the number of independent S-wave observables from six to four. Included in the experimental data analysis, these relations can help to reduce the background from S-wave pollution. We further point out the discriminative power of the maximum of the angular observable P-2 as a charm-loop insensitive probe of right-handed currents. Moreover, we show that in absence of right-handed currents the angular observables P-4' and P-5' fulfill the relation P-4' = beta P-5' at the position where P-2 reaches its maximum.
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