de Angelis, A. and de Maria, M. and Antonelli, M. and Dreucci, M. (2011) A search for directional violations of the Lorentz invariance through the study of a possible anisotropy of particle lifetimes. Il nuovo cimento C, 34 (3). pp. 323-326. ISSN 1826-9885
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Abstract
From the study of a sample of about 62.3 million well-reconstructed K0S → π+π− decays recorded by the KLOE detector at the DAΦNE accelerator in Frascati, the lifetimes of K0S mesons parallel and antiparallel to the direction of motion of the Earth with respect to the Cosmic Microwave Background (CMB) reference frame have been studied. No difference has been found, and a limit on a possible asymmetry of the lifetime with respect to the CMB has been set at 95% CL: |A|CMB = |τ+CMB − τ−CMB|/(τ+CMB + τ−CMB) < 0.98×10−3. This is presently the best experimental limit on such quantity, and it is smaller of the speed, expressed in natural units, of the Solar System with respect to the CMB (V/c = 1.23×10−3). The present limit might constrain possible Lorentz-violating anisotropical theories.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Special relativity ; Quantum gravity ; γ-ray |
| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 06 Apr 2020 19:01 |
| Last Modified: | 06 Apr 2020 19:01 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/17292 |
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