Variation of the relative yield of charged and neutral B mesons across the Υ ( 4 S ) resonance
نویسنده
چکیده
Variation of the relative yield of charged and neutral B mesons across the Υ(4S) resonance Abstract It is shown that the ratio of the production rates of the pairs B + B − and B 0 B 0 should experience a substantial and rapid variation with energy within the width of the Υ(4S) resonance, crossing the value of one near the center of the resonance. This behavior is due to an interference of the rapidly changing with energy Breit-Wigner phase with the phase introduced in the wave function of charged mesons by their Coulomb interaction.
منابع مشابه
The Babar Detector
BABAR, the detector for the SLAC PEP-II asymmetric e + e − B Factory operating at the Υ (4S) resonance, was designed to allow comprehensive studies of CP-violation in B-meson decays. Charged particle tracks are measured in a multi-layer silicon vertex tracker surrounded by a cylindrical wire drift chamber. Electromagnetic showers from electrons and photons are detected in an array of CsI crysta...
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