Observation of the decay Λ0 b → pK−μ+μ− and a search for CP violation
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Aaij2017_Article_ObservationOfTheDecayΛb0PKΜΜAn.pdf
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Author(s)
The LHCb Collaboration
Boettcher, Thomas Julian
Ilten, Philip J
Williams, M.
Date Issued
June 2017
Journal
Journal of High Energy Physics
Citation
Aaij, R., B. Adeva, M. Adinolfi, Z. Ajaltouni, S. Akar, J. Albrecht, et al. “Observation of the Decay Λ
b
0
→ pK
−
μ
+
μ
− and a Search for CP Violation.” Journal of High Energy Physics 2017, no. 6 (June 2017). doi:10.1007/jhep06(2017)108.
Version
Final published version
Abstract
© 2017, The Author(s). A search for CP violation in the decay Λb0→ pK−μ+μ−is presented. This decay is mediated by flavour-changing neutral-current transitions in the Standard Model and is potentially sensitive to new sources of CP violation. The study is based on a data sample of proton-proton collisions recorded with the LHCb experiment, corresponding to an integrated luminosity of 3 fb−1. The Λb0→ pK−μ+μ−decay is observed for the first time, and two observables that are sensitive to different manifestations of CP violation are measured, (Formula Presented.)where the latter is based on asymmetries in the angle between the μ+μ−and pK−decay planes. These are measured to be(Formula Presented.)and no evidence for CP violation is found.[Figure not available: see fulltext.].
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1007/JHEP06(2017)108
