Zobrazeno 1 - 10
of 80
pro vyhledávání: '"Awramik, M."'
Publikováno v:
Nucl.Phys.B813:174-187,2009
We present the first calculation of the two-loop electroweak fermionic correction to the flavour-dependent effective weak-mixing angle for bottom quarks, sin^2 theta_{eff}^{b anti-b}. For the evaluation of the missing two-loop vertex diagrams, two me
Externí odkaz:
http://arxiv.org/abs/0811.1364
Publikováno v:
JHEP0611:048,2006
Recently exact results for the complete electroweak two-loop contributions to the effective weak mixing angle were published. This paper illustrates the techniques used for this computation, in particular the methods for evaluating the loop diagrams
Externí odkaz:
http://arxiv.org/abs/hep-ph/0608099
Publikováno v:
Phys.Lett. B642 (2006) 563-566
We present the complete bosonic contributions to the effective weak mixing angle, $\seff$, at the two-loop level in the electroweak interactions. We find their size to be about three times smaller than inferred from simple estimates from lower orders
Externí odkaz:
http://arxiv.org/abs/hep-ph/0605339
Details of the recent calculation of the two-loop bosonic corrections to the effective leptonic weak mixing angle are presented. In particular, the expansion in the difference of the W and Z boson masses is studied and some of the master integrals ne
Externí odkaz:
http://arxiv.org/abs/hep-ph/0602029
Publikováno v:
ECONFC050318:0610,2005
Electroweak precision observables allow stringent tests of the Standard Model at the quantum level and imply interesting bounds on the mass of the Higgs boson through higher-order loop effects. Very significant constraints come especially from the de
Externí odkaz:
http://arxiv.org/abs/hep-ph/0507159
Autor:
Arbuzov, A. B., Awramik, M., Czakon, M., Freitas, A., Gruenewald, M. W., Moenig, K., Riemann, S., Riemann, T.
Publikováno v:
Comput.Phys.Commun.174:728-758,2006
ZFITTER is a Fortran program for the calculation of fermion pair production and radiative corrections at high energy e+e- colliders; it is also suitable for other applications where electroweak radiative corrections appear. ZFITTER is based on a semi
Externí odkaz:
http://arxiv.org/abs/hep-ph/0507146
The complete two-loop electroweak fermionic corrections to the effective leptonic weak mixing angle, sin^2(theta_eff), are now available. Here we shortly present the methods applied and illustrate the implications on indirect prediction for the Higgs
Externí odkaz:
http://arxiv.org/abs/hep-ph/0409142
We give some details of the recently completed calculation of the full two-loop fermionic corrections to the effective leptonic weak mixing angle. Among others, we describe the C++ library DiaGen/IdSolver, which was used to reduce the two-loop light
Externí odkaz:
http://arxiv.org/abs/hep-ph/0408207
Publikováno v:
Phys.Rev.Lett.93:201805,2004
We present a complete calculation of the contributions to the effective leptonic weak mixing angle, sin^2theta_eff, generated by closed fermion loops at the two-loop level of the electroweak interactions. This quantity is the source of the most strin
Externí odkaz:
http://arxiv.org/abs/hep-ph/0407317
Publikováno v:
Phys.Rev.D69:053006,2004
The presently most accurate prediction for the W-boson mass in the Standard Model is obtained by combining the complete two-loop result with the known higher-order QCD and electroweak corrections. The numerical impact of the different contributions i
Externí odkaz:
http://arxiv.org/abs/hep-ph/0311148