Search for CP violation through an amplitude analysis of D⁰ → K⁺K⁻π⁺π⁻ decays
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13130_2019_Article_10009.pdf
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Author(s)
Aaij, R.
Abellán Beteta, C.
Adeva, B.
Adinolfi, M.
Aidala, C. A
Ajaltouni, Z.
Akar, S.
Albicocco, P.
Albrecht, J.
Alessio, F.
Date Issued
February 2019
Journal
Journal of High Energy Physics
Publisher
Springer
Citation
Aaij, R. et al. "Search for CP violation through an amplitude analysis of D⁰ → K⁺K⁻π⁺π⁻ decays". Journal of High Energy Physics 2019 (February 2019): 126 © 2019 The Author(s)
Version
Final published version
Abstract
A search for CP violation in the Cabibbo-suppressed D⁰ → K⁺K⁻π⁺π⁻ decay mode is performed using an amplitude analysis. The measurement uses a sample of pp collisions recorded by the LHCb experiment during 2011 and 2012, corresponding to an integrated luminosity of 3.0 fb⁻¹. The D⁰ mesons are reconstructed from semileptonic b-hadron decays into D⁰μ⁻X final states. The selected sample contains more than 160 000 signal decays, allowing the most precise amplitude modelling of this D0 decay to date. The obtained amplitude model is used to perform the search for CP violation. The result is compatible with CP symmetry, with a sensitivity ranging from 1% to 15% depending on the amplitude considered. Keywords:
Charm physics; CP violation; Flavor physics; Hadron-Hadron scattering (experiments)
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution
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DOI of Published Version
https://doi.org/10.1007/JHEP02(2019)126
