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Search for C P violation and observation of P violation in Λ b 0 → p π − π + π − decays
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Search for C P violation and observation of P violation in Λ b 0 → p π − π + π − decays
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Name
PhysRevD.102.051101.pdf
Description
Published version
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382.5 KB
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154b050c79f1eaaff6c60ae00ea84b50
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sword-2020-11-23T15:40:00.original.xml (130 B)
Original SWORD entry document
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Date Issued
2020
Journal
Physical Review D
Publisher
American Physical Society (APS)
Version
Final published version
Abstract
© 2020 CERN. A search for CP violation in the Λb0→pπ-π+π- decay is performed using LHCb data corresponding to an integrated luminosity of 6.6 fb-1 collected in pp collisions at center-of-mass energies of 7, 8 and 13 TeV. The analysis uses both triple product asymmetries and the unbinned energy test method. The highest significances of CP asymmetry are 2.9 standard deviations from triple product asymmetries and 3.0 standard deviations for the energy test method. Once the global p-value is considered, all results are consistent with no CP violation. Parity violation is observed at a significance of 5.5 standard deviations for the triple product asymmetry method and 5.3 standard deviations for the energy test method. The reported deviations are given in regions of phase space.
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Terms of Use
Creative Commons Attribution 4.0 International license
https://creativecommons.org/licenses/by/4.0/
Persistent DSpace Link
https://hdl.handle.net/1721.1/133663
DOI of Published Version
10.1103/PhysRevD.102.051101
