Search for CP violation in Λ b 0 → p K − and Λ b 0 → p π − decays
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1-s2.0-S0370269318308104-main.pdf
Description
Published version
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Author(s)
The LHCb Collaboration
Boettcher, Thomas Julian
Craik, Daniel C
Weisser, Constantin
Williams, Michael
Date Issued
2018
Journal
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Publisher
Elsevier BV
Version
Final published version
Abstract
A search for $C\!P$ violation in $\Lambda^0_b \to p K^-$ and $\Lambda^0_b \to
p \pi^-$ decays is presented using a sample of $pp$ collisions collected with
the LHCb detector and corresponding to an integrated luminosity of 3.0
fb$^{-1}$. The $C\!P$-violating asymmetries are measured to be
$A_{\mathrm{CP}}^{pK^-} = -0.020 \pm 0.013\pm 0.019$ and
$A_{\mathrm{CP}}^{p\pi^-} = -0.035 \pm 0.017 \pm 0.020 $, and their difference
$A_{\mathrm{CP}}^{pK^-}-A_{\mathrm{CP}}^{p\pi^-} = 0.014 \pm 0.022 \pm 0.010$,
where the first uncertainties are statistical and the second systematic. These
are the most precise measurements of such asymmetries to date.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1016/J.PHYSLETB.2018.10.039
