Measurement of CP observables in B ± → D (⁎) K ± and B ± → D (⁎) π ± decays
Name
1-s2.0-S0370269317309620-main.pdf
Size
3.24 MB
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Checksum (MD5)
934838a63f009ffa0bfd15d240bdb75c
Author(s)
The LHCb Collaboration
Boettcher, Thomas Julian
Craik, Daniel C
Ilten, Philip J
Williams, Michael
Date Issued
December 2017
Journal
Physics Letters B
Citation
Aaij, R., B. Adeva, M. Adinolfi, Z. Ajaltouni, S. Akar, J. Albrecht, F. Alessio, et al. “Measurement of CP Observables in B ± → D (⁎) K ± and B ± → D (⁎) π ± Decays.” Physics Letters B 777 (February 2018): 16–30. doi:10.1016/j.physletb.2017.11.070.
Version
Final published version
Abstract
© 2017 The Author Measurements of CP observables in B±→D(⁎)K±and B±→D(⁎)π±decays are presented, where D(⁎)indicates a neutral D or D⁎meson that is an admixture of D(⁎)0and D¯(⁎)0states. Decays of the D⁎meson to the Dπ0and Dγ final states are partially reconstructed without inclusion of the neutral pion or photon, resulting in distinctive shapes in the B candidate invariant mass distribution. Decays of the D meson are fully reconstructed in the K±π∓, K+K−and π+π−final states. The analysis uses a sample of charged B mesons produced in pp collisions collected by the LHCb experiment, corresponding to an integrated luminosity of 2.0, 1.0 and 2.0 fb−1taken at centre-of-mass energies of s=7, 8 and 13 TeV, respectively. The study of B±→D⁎K±and B±→D⁎π±decays using a partial reconstruction method is the first of its kind, while the measurement of B±→DK±and B±→Dπ±decays is an update of previous LHCb measurements. The B±→DK±results are the most precise 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.2017.11.070
