Measurement of C P Violation in the Decay B + → K + π 0
Name
PhysRevLett.126.091802.pdf
Description
Published version
Size
289.6 KB
Format
Adobe PDF
Checksum (MD5)
9dad10be2c4c3ae693256b184139278a
Author(s)
Williams, Michael
Date Issued
2021
Journal
Physical Review Letters
Publisher
American Physical Society (APS)
Citation
Williams, Michael. 2021. "Measurement of C P Violation in the Decay B + → K + π 0." Physical Review Letters, 126 (9).
Version
Final published version
Abstract
A measurement of CP violation in the decay B+→K+π0 is reported using data corresponding to an integrated luminosity of 5.4 fb-1 collected with the LHCb experiment at a center-of-mass energy of s=13 TeV. The CP asymmetry is measured to be 0.025±0.015±0.006±0.003, where the uncertainties are statistical, systematic, and due to an external input. This is the most precise measurement of this quantity. It confirms and significantly enhances the observed anomalous difference between the direct CP asymmetries of the B0→K+π- and B+→K+π0 decays, known as the Kπ puzzle.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution 4.0 International License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PHYSREVLETT.126.091802
