Semileptonic B meson decays in the parton model
                    
                        
                            نویسندگان
                            
                            
                        
                        
                    
                    
                    چکیده
منابع مشابه
A Parton Model for Inclusive Semileptonic B Meson Decays
The parton model for semileptonic B meson decays is studied with special attention to the decay distributions. We find that the spectra show dramatic variations when we introduce cuts on the hadronic energy or invariant mass of hadrons. Results for both b → u and b → c decays are presented. The detailed spectra may help to separate the two types of decays. Supported by Bundesministerium für For...
متن کاملSemileptonic B Meson Decays
We review some of the most important topics in the semileptonic decays of B mesons, with emphasis on recent results from CLEO and LEP. We discuss the current data samples, inclusive and exclusive semileptonic decay branching fractions, and form factor measurements in the context of HQET.
متن کاملSemileptonic Decays of the B-meson
Recent results on tile selnileptonic clecay of B-n]esons are reported fronl tile .4RGUS experinleut, operating at tile DORIS 11 e+estorage riug at DESY, T~vo new nleasurelnents of tile inclusive sexnilept.onic I)ranclling ratio are presented ;vllicll are iu agreenlent Ivitll previous results ancl renlain sonle~vllat lolver than theoretical preclictions. One analysis, in particldar. strives to r...
متن کاملSemileptonic B Meson Decays and Interfering Amplitudes
Consequences of the interference between external and internal spectator amplitudes for the lifetimes and semileptonic decay fractions of B and B mesons are discussed. Extrapolating from the constructive interference observed in 11 exclusive hadronic B decays we find an inclusive semileptonic decay fraction of (11.2± 0.5 ± 1.7)%, significantly closer to the experimental results than previous pr...
متن کاملSemileptonic Decays of D and B Mesons, Part Ii Iv. B-meson Semileptonic Decays the Inclusive Semileptonic Branching Fraction
In the following sections, we discuss some of the key questions related to semileptonic decays of B mesons: the inclusive semileptonic branching fraction, the determination of jV cb j and jV ub j from inclusive and exclusive measurements, recent progress in exclusive semileptonic decays, and form factor measurements and tests of heavy-quark eeective theory. We emphasize the uncertainties that a...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nuclear Physics B
سال: 1989
ISSN: 0550-3213
DOI: 10.1016/0550-3213(89)90274-5