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Title: | Search for Violations of Lorentz Invariance and CPT Symmetry in B0(s) Mixing |
Author: | Garrido Beltrán, Lluís Graugés Pous, Eugeni Rives Molina, Vicente José Graciani Díaz, Ricardo Picatoste Olloqui, Eduardo Calvo Gómez, Míriam Gascón Fora, David Marin Benito, Carla Vilasis-Cardona, Xavier LHCb Collaboration |
Keywords: | Espais de Lorentz Violació CP (Física nuclear) Gran Col·lisionador d'Hadrons Lorentz spaces CP violation (Nuclear physics) Large Hadron Collider (France and Switzerland) |
Issue Date: | 15-Jun-2016 |
Publisher: | American Physical Society |
Abstract: | Violations of CPT symmetry and Lorentz invariance are searched for by studying interference effects in B-0 mixing and in B-s(0) mixing. Samples of B-0 -> J/psi K-S(0) and B-0(s) -> J/psi K+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 Delta a(mu) with precisions of O(10(-15)) and O(10(-14)) GeV for the B-0 and B-s(0) systems, respectively. With no assumption on Lorentz (non) invariance, the CPT-violating parameter z in the B-s(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. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.116.241601 |
It is part of: | Physical Review Letters, 2016, vol. 116, num. 24, p. 241601 |
URI: | http://hdl.handle.net/2445/114426 |
Related resource: | https://doi.org/10.1103/PhysRevLett.116.241601 |
ISSN: | 0031-9007 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) |
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