Amplitude Analysis of the Decay B ¯ 0 → K S 0 π + π − and First Observation of the C P Asymmetry in B ¯ 0 → K * ( 892 ) − π +
Name
PhysRevLett.120.261801.pdf
Description
Published version
Size
360.64 KB
Format
Unknown
Checksum (MD5)
ec575fa6f4491c0cc5513d250bf64a7a
Author(s)
The LHCb Collaboration
Boettcher, Thomas Julian
Craik, Daniel C
Ilten, Philip J
Weisser, Constantin
Williams, Michael
Date Issued
2018
Journal
Physical Review Letters
Publisher
American Physical Society (APS)
Version
Final published version
Abstract
The time-integrated Dalitz plot of the three-body hadronic charmless decay
${{\overline{B}}^0 \to K_{\mathrm{\scriptscriptstyle S}}^0 \pi^+ \pi^-}$ is
studied using a $pp$ collision data sample recorded with the LHCb detector,
corresponding to an integrated luminosity of $3.0\;\mathrm{fb}^{-1}$. The decay
amplitude is described with an isobar model. Relative contributions of the
isobar amplitudes to the ${\overline{B}^0 \to K_{\mathrm{\scriptscriptstyle
S}}^0 \pi^+ \pi^-}$ decay branching fraction and CP asymmetries of the
flavour-specific amplitudes are measured. The CP asymmetry between the
conjugate ${\overline{B}^0 \to K^{*}(892)^{-}\pi^+}$ and ${\overline{B}^0 \to
K^{*}(892)^{+}\pi^-}$ decay rates is determined to be $-0.308 \pm 0.062$.
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/10.1103/PHYSREVLETT.120.261801
