ISSN:
1434-6052
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The Cabibbo allowed non-leptonicB-decays in two hadrons are studied, within the factorization hypothesis, in the framework of Isgur and Wise theory for the matrix elements of the ΔB=−ΔC=±1 weak currents. TheSU(2) HF symmetry relates |ΔB|=1 to |ΔC|=1 currents, which have been measured in the semileptonic strange decays of charmed particles. By assuming colour screening and allowing forSU(3) invariant contributions from the annihilation terms with charmed final states one is able to comply with the present experimental knowledge. TheCP violating asymmetries in neutralB decays are given charmed final states in terms of theK-M angles. With the central values found for the annihilation parameters there is a destructive (constructive) interference between the direct and annihilation terms in the Cabibbo allowed (doubly forbidden) amplitudes for the decays intoD 0(D *0)π0 and {D 0ρ0 so that they may be of the same order. This would imply large asymmetries, for which however our present knowledge on the amplitudes does not allow to predict even their sign. We have better confidence in our predictions for the charged final states than the neutral ones and can draw the conclusion that the detection of the corresponding asymmetries requires, at least, 106 tagged neutralB-particles.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01498623
Permalink