Observation of the suppressed ADS modes B →[πKππ]DKand B →[πKππ]Dπ

Observation of the suppressed ADS modes B →[πKππ]DKand B →[πKππ]Dπ

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An analysis of B → DK and B → Dπ decays is presented where the D meson is reconstructed in the four-body nal state Kπππ. Using LHCb data corresponding to an integrated luminosity of 1.0fb1, rst observations are made of the suppressed ADS modes B →[πKππ]D K and B → [πKππ]Dπ with a signicance of 5.1σ...

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Bibliographic Details
Main Authors: Bediaga, I, De Miranda, J, Rodrigues, F, Massafferri, A, Nasteva, I, dos Reis, A, Wilkinson, G, Amato, S, Akiba, K, De Paula, L, Francisco, O, Gandelman, M, Gomes, A, Lopes, J, Tostes, D, Goicochea, J, Polycarpo, E, Rangel, MS, De Paula, B, Vieira, D, Chen, P, Gao, Y, Jing, F, Li, Y, Liu, B
Format: Journal article
Published: 2013
Description
Summary:An analysis of B → DK and B → Dπ decays is presented where the D meson is reconstructed in the four-body nal state Kπππ. Using LHCb data corresponding to an integrated luminosity of 1.0fb1, rst observations are made of the suppressed ADS modes B →[πKππ]D K and B → [πKππ]Dπ with a signicance of 5.1σ and greater than 10σ, respectively. Measurements of CP asymmetries and CP-conserving ratios of partial widths from this family of decays are also performed. The magnitude of the ratio between the suppressed and favoured B → DK amplitudes is determined to be r = 0.097 ±0.011. © 2013 CERN. Published by Elsevier B.V.

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