Finite Width Effects and Gauge Invariance in RadiativeWProduction and Decay
نویسندگان
چکیده
منابع مشابه
Finite width effects and gauge invariance in radiative W production and decay.
The naive implementation of finite width effects in processes involving unstable particles can violate gauge invariance. For the example of radiative W production and decay, qq̄ → lνγ, at tree level, it is demonstrated how gauge invariance is restored by including the imaginary part of triangle graphs in addition to resumming the imaginary contributions to the W vacuum polarization. Monte Carlo ...
متن کاملLarge Gauge Invariance and Finite Temperature
In this talk, I summarize the status of our understanding of the puzzle of large gauge invariance at finite temperature.
متن کاملFinite Temperature and Large Gauge Invariance
Gauge theories are beautiful theories which describe physical forces in a natural manner and because of their rich structure, the study of gauge theories at nite temperature [1] is quite interesting in itself. However, to avoid getting into technicalities, we will not discuss the intricacies of such theories either at zero temperature or at nite temperature. Rather, we would study a particular ...
متن کاملpatterns and variations in native and non-native interlanguage pragmatic rating: effects of rater training, intercultural proficiency, and self-assessment
although there are studies on pragmatic assessment, to date, literature has been almost silent about native and non-native english raters’ criteria for the assessment of efl learners’ pragmatic performance. focusing on this topic, this study pursued four purposes. the first one was to find criteria for rating the speech acts of apology and refusal in l2 by native and non-native english teachers...
15 صفحه اولGauge Invariance, Finite Temperature and Parity Anomaly in D=3
The effective gauge field actions generated by charged fermions in QED3 and QCD3 can be made invariant under both small and large gauge transformations at any temperature by suitable regularization of the Dirac operator determinant, at the price of parity anomalies. We resolve the paradox that the perturbative expansion is not invariant, as manifested by the temperature dependence of the induce...
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 Letters
سال: 1995
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.75.1002