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EnglishWe report results of a search for CPT and Lorentz violation in B(0)-(B) over bar (0) oscillations using inclusive dilepton events from 232x10(6) Upsilon(4S)-> B (B) over bar decays recorded by the BABAR detector at the PEP-II B Factory at SLAC. We find 2.8 sigma significance, compatible with no signal, for variations in the complex CPT violation parameter z at the Earth's sidereal frequency and extract values for the quantities Delta a(mu) in the general Lorentz-violating standard-model extension. The spectral powers for variations in z over the frequency range 0.26 yr(-1) to 2.1 solar day(-1) are also compatible with no signal.
| Titolo: | Search for CPT and lorentz violation in B(0)-(B)over-bar(0) oscillations with dilepton events | |
| Autori: | ||
| Data di pubblicazione: | 2008 | |
| Rivista: | ||
| Abstract: | We report results of a search for CPT and Lorentz violation in B(0)-(B) over bar (0) oscillations using inclusive dilepton events from 232x10(6) Upsilon(4S)-> B (B) over bar decays recorded by the BABAR detector at the PEP-II B Factory at SLAC. We find 2.8 sigma significance, compatible with no signal, for variations in the complex CPT violation parameter z at the Earth's sidereal frequency and extract values for the quantities Delta a(mu) in the general Lorentz-violating standard-model extension. The spectral powers for variations in z over the frequency range 0.26 yr(-1) to 2.1 solar day(-1) are also compatible with no signal. | |
| Handle: | http://hdl.handle.net/20.500.12571/675 | |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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http://hdl.handle.net/20.500.12571/675
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