Phenomenological analysis ofDmeson lifetimes
نویسندگان
چکیده
منابع مشابه
Phenomenological Analysis of D Meson Lifetimes
The QCD-based operator-product-expansion technique is systematically applied to the study of charmed meson lifetimes. We stress that it is crucial to take into account the momentum of the spectator light quark of charmed mesons, otherwise the destructive Pauli-interference effect in D+ decays will lead to a negative decay width for the D+. We have applied the QCD sum rule approach to estimate t...
متن کاملA Phenomenological Analysis of Heavy Hadron Lifetimes
A phenomenological analysis of lifetimes of bottom and charmed hadrons within the framework of the heavy quark expansion is performed. The baryon matrix element is evaluated using the bag model and the nonrelativistic quark model. We find that bottom-baryon lifetimes follow the pattern τ(Ωb) ' τ(Ξ − b ) > τ(Λb) ' τ(Ξ 0 b). However, neither the lifetime ratio τ(Λb)/τ(Bd) nor the absolute decay r...
متن کاملPhenomenological approach to mechanical damage growth analysis.
The problem of characterizing damage evolution in a generic material is addressed with the aim of tracing it back to existing growth models in other fields of research. Based on energetic considerations, a system evolution equation is derived for a generic damage indicator describing a material system subjected to an increasing external stress. The latter is found to fit into the framework of a...
متن کاملExperience of miscarriage: an interpretative phenomenological analysis
OBJECTIVE The objective of the study was to explore the experiences of those who have experienced miscarriage, focusing on men's and women's accounts of miscarriage. DESIGN This was a qualitative study using a phenomenological framework. Following in-depth semistructured interviews, analysis was undertaken in order to identify superordinate themes relating to their experience of miscarriage. ...
متن کاملPhenomenological Analysis of Hybrid Textures of Neutrinos
We present a comprehensive phenomenological analysis of the allowed hybrid textures of neutrinos. Out of a total of sixty hybrid textures with one equality between the elements of neutrino mass matrix and one texture zero only twenty three are found to be viable at 99% C.L. whereas the earlier analysis found fifty four to be viable. We examine the phenomenological implications of the allowed hy...
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: Physical Review D
سال: 1999
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.61.014008