SLAC{PUB{7123 The Frequency of Neutral Meson and Neutrino Oscillation
نویسنده
چکیده
Interference between the di erent mass eigenstate components of a neutral K meson causes its decay probability to oscillate with time. Related oscillations occur in the decay chain ! KK ! f1f2 (where f1;2 are decay channels), in neutral B decay, in the chain (4s) ! BB ! f1f2, and in massive neutrino propagation. Since the mass eigenstates comprising a neutral K, a neutral B, or a neutrino have di erent masses, they have di erent speeds at any given momentum. Thus, classically, they become separated in space and time. This circumstance can tempt one to evaluate their contributions to theK or B decay, or to the neutrino interaction with a detector, at di erent spacetime points. However, these quantum-mechanically interfering contributions must always be evaluated at precisely the same point. Evaluating them at di erent points can lead to predicted oscillation frequencies double their true values.
منابع مشابه
SLAC-PUB-11888 Rare hadronic B decays.
The study of rare hadronic B-meson decays with branching fractions O(10) enable us to probe a wide range of phenomena. Such decays can be used to probe our understanding of the CKM [1] description of quark mixing and CP violation (CPV ) in the Standard Model of Particle Physics (SM) by measuring all three of the Unitarity Triangle angles α, β and γ, as well as charge asymmetries in direct CPV ∆...
متن کاملBirth of Neutrino Oscillation
This is a brief presentation of historical introduction to the theoretical concept of neutrino oscillation during the early stage of the studies up to 60's. 1 Prediction of and (1942) and Critiques by Sakata Let me begin with Sakata, that would concern with the theme of this talk. In 1942, Sakata and Inoue proposed the so-called "two-meson theory" 1]. Their theory was to claim the existence of ...
متن کامل/ 98 11 35 8 v 1 1 7 N ov 1 99 8 BIRTH OF NEUTRINO OSCILLATION ∗
This is a brief presentation of historical introduction to the theoretical concept of neutrino oscillation during the early stage of the studies up to 60's. 1 Prediction of µ and ν µ (1942) and Critiques by Sakata Let me begin with Sakata, that would concern with the theme of this talk. In 1942, Sakata and Inoue proposed the so-called " two-meson theory " [1]. Their theory was to claim the exis...
متن کاملMeasurements of Lifetimes, Mixing and CP Violation of B Mesons with the BABAR Detector
Using a data sample of 62 million Υ (4S) → BB decays collected between 1999 and 2001 by the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC we study events in which one neutral B meson is fully reconstructed in a final state containing a charmonium meson and the flavour of the other neutral B meson is determined from its decay products. The amplitude of the CP-violating asymmet...
متن کاملCP violation in B decays at the B A B AR experiment
During the first year of data taking, the 1999-2000 run, the BABAR detector at the SLAC PEP-II asymmetric collider has collected an integrated luminosity of 20.7 fb −1 corresponding to 22.7 million BB pairs at the Υ(4S) resonance. Using this data, we present the measurement of sin2β based on samples of B 0 → J/ψ K 0 S , B 0 → ψ(2S)K 0 S and B 0 → J/ψ K 0 L decays. Our measured value is sin2β = ...
متن کامل