Journal article
Search for violations of Lorentz invariance and CPT symmetry in Bs^0 mixing.
- Abstract:
- Violations of CPT symmetry and Lorentz invariance are searched for by studying interference effects in B^0 mixing and in Bs^0 mixing. Samples of B^0 → J/ψKS^0 and Bs^0 → J/ψK^+K^- decays are recorded by the LHCb detector in proton-proton collisions at center-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb^-1. No periodic variations of the particle-antiparticle mass differences are found, consistent with Lorentz invariance and CPT symmetry. Results are expressed in terms of the standard model extension parameter Δaμ with precisions of O(10^-15) and O(10^-14) GeV for the B^0 and Bs^0 systems, respectively. With no assumption on Lorentz (non)invariance, the CPT-violating parameter z in the Bs^0 system is measured for the first time and found to be Re(z) = -0.022 ± 0.033 ± 0.005 and Im(z) = 0.004 ± 0.011 ± 0.002, where the first uncertainties are statistical and the second systematic.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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- Files:
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(Preview, Accepted manuscript, pdf, 520.0KB, Terms of use)
-
- Publisher copy:
- 10.1103/PhysRevLett.116.241601
Authors
- Publisher:
- American Physical Society
- Journal:
- Physical Review Letters More from this journal
- Volume:
- 116
- Issue:
- 24
- Pages:
- 241601
- Publication date:
- 2016-05-01
- Acceptance date:
- 2016-05-24
- DOI:
- ISSN:
-
0031-9007 and 1079-7114
- Pmid:
-
27367382
- Language:
-
English
- Keywords:
- Pubs id:
-
pubs:611977
- UUID:
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uuid:dc5d5c52-de8b-4769-90c2-368c970dbe0d
- Local pid:
-
pubs:611977
- Source identifiers:
-
611977
- Deposit date:
-
2016-11-02
Terms of use
- Copyright holder:
- CERN
- Copyright date:
- 2016
- Notes:
- © 2016 CERN, for the LHCb Collaboration. This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
- Licence:
- CC Attribution (CC BY)
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