Amplitude analysis of <i>B</i><SUP>-</SUP> → <i>D</i><SUP>+</SUP>π<SUP>-</SUP>π<SUP>-</SUP> decays

Aaij, R, Adeva, B, Adinolfi, M, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Ali, S, Alkhazov, G
et al (show 757 more authors) (2016) Amplitude analysis of <i>B</i><SUP>-</SUP> → <i>D</i><SUP>+</SUP>π<SUP>-</SUP>π<SUP>-</SUP> decays. PHYSICAL REVIEW D, 94 (7). 231802-.

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The first amplitude analysis of the B^{±}→π^{±}K^{+}K^{-} decay is reported based on a data sample corresponding to an integrated luminosity of 3.0  fb^{-1} of pp collisions recorded in 2011 and 2012 with the LHCb detector. The data are found to be best described by a coherent sum of five resonant structures plus a nonresonant component and a contribution from ππ↔KK S-wave rescattering. The dominant contributions in the π^{±} K^{∓} and K^{+} K^{-} systems are the nonresonant and the B^{±}→ρ(1450)^{0}π^{±} amplitudes, respectively, with fit fractions around 30%. For the rescattering contribution, a sizable fit fraction is observed. This component has the largest CP asymmetry reported to date for a single amplitude of (-66±4±2)%, where the first uncertainty is statistical and the second systematic. No significant CP violation is observed in the other contributions.

Item Type: Article
Additional Information: All figures and tables, along with any supplementary material and additional information, are available at (LHCb public pages) / v2: Latex formatting in abstract fixed
Uncontrolled Keywords: LHCb Collaboration
Depositing User: Symplectic Admin
Date Deposited: 01 Dec 2016 11:34
Last Modified: 12 Oct 2023 07:54
DOI: 10.1103/PhysRevD.94.072001
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