Search for violations of Lorentz invariance and CPT symmetry in Bs^0 mixing.
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, correspo...
| Main Authors: | , , , , , , , , , , , , , |
|---|---|
| Format: | Journal article |
| Language: | English |
| Published: |
American Physical Society
2016
|
| _version_ | 1797098712447582208 |
|---|---|
| author | Cheung, S Evans, T Gandini, P Hadavizadeh, T Harnew, N Hill, D Jalocha, P John, M Lupton, O Malde, S Nandi, A Topp-Jorgenson, S Wilkinson, G The LHCb Collaboration (719 others) |
| author_facet | Cheung, S Evans, T Gandini, P Hadavizadeh, T Harnew, N Hill, D Jalocha, P John, M Lupton, O Malde, S Nandi, A Topp-Jorgenson, S Wilkinson, G The LHCb Collaboration (719 others) |
| author_sort | Cheung, S |
| collection | OXFORD |
| description | 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. |
| first_indexed | 2024-03-07T05:13:32Z |
| format | Journal article |
| id | oxford-uuid:dc5d5c52-de8b-4769-90c2-368c970dbe0d |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T05:13:32Z |
| publishDate | 2016 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | oxford-uuid:dc5d5c52-de8b-4769-90c2-368c970dbe0d2022-03-27T09:17:25ZSearch for violations of Lorentz invariance and CPT symmetry in Bs^0 mixing.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:dc5d5c52-de8b-4769-90c2-368c970dbe0dEnglishSymplectic Elements at OxfordAmerican Physical Society2016Cheung, SEvans, TGandini, PHadavizadeh, THarnew, NHill, DJalocha, PJohn, MLupton, OMalde, SNandi, ATopp-Jorgenson, SWilkinson, GThe LHCb Collaboration (719 others)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. |
| spellingShingle | Cheung, S Evans, T Gandini, P Hadavizadeh, T Harnew, N Hill, D Jalocha, P John, M Lupton, O Malde, S Nandi, A Topp-Jorgenson, S Wilkinson, G The LHCb Collaboration (719 others) Search for violations of Lorentz invariance and CPT symmetry in Bs^0 mixing. |
| title | Search for violations of Lorentz invariance and CPT symmetry in Bs^0 mixing. |
| title_full | Search for violations of Lorentz invariance and CPT symmetry in Bs^0 mixing. |
| title_fullStr | Search for violations of Lorentz invariance and CPT symmetry in Bs^0 mixing. |
| title_full_unstemmed | Search for violations of Lorentz invariance and CPT symmetry in Bs^0 mixing. |
| title_short | Search for violations of Lorentz invariance and CPT symmetry in Bs^0 mixing. |
| title_sort | search for violations of lorentz invariance and cpt symmetry in bs 0 mixing |
| work_keys_str_mv | AT cheungs searchforviolationsoflorentzinvarianceandcptsymmetryinbs0mixing AT evanst searchforviolationsoflorentzinvarianceandcptsymmetryinbs0mixing AT gandinip searchforviolationsoflorentzinvarianceandcptsymmetryinbs0mixing AT hadavizadeht searchforviolationsoflorentzinvarianceandcptsymmetryinbs0mixing AT harnewn searchforviolationsoflorentzinvarianceandcptsymmetryinbs0mixing AT hilld searchforviolationsoflorentzinvarianceandcptsymmetryinbs0mixing AT jalochap searchforviolationsoflorentzinvarianceandcptsymmetryinbs0mixing AT johnm searchforviolationsoflorentzinvarianceandcptsymmetryinbs0mixing AT luptono searchforviolationsoflorentzinvarianceandcptsymmetryinbs0mixing AT maldes searchforviolationsoflorentzinvarianceandcptsymmetryinbs0mixing AT nandia searchforviolationsoflorentzinvarianceandcptsymmetryinbs0mixing AT toppjorgensons searchforviolationsoflorentzinvarianceandcptsymmetryinbs0mixing AT wilkinsong searchforviolationsoflorentzinvarianceandcptsymmetryinbs0mixing AT thelhcbcollaboration719others searchforviolationsoflorentzinvarianceandcptsymmetryinbs0mixing |