Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-11-12
JHEP 1101:104,2011
Physics
High Energy Physics
High Energy Physics - Phenomenology
36 pages, 2 figures. V2: References added, minor additions, corrected typos in eqs. (41),(70) and (71), version published in J
Scientific paper
10.1007/JHEP01(2011)104
We calculate the two-loop matching corrections for the gauge couplings at the Grand Unification scale in a general framework that aims at making as few assumptions on the underlying Grand Unified Theory (GUT) as possible. In this paper we present an intermediate result that is general enough to be applied to the Georgi-Glashow SU(5) as a "toy model". The numerical effects in this theory are found to be larger than the current experimental uncertainty on $alpha_s$. Furthermore, we give many technical details regarding renormalization procedure, tadpole terms, gauge fixing and the treatment of group theory factors, which is useful preparative work for the extension of the calculation to supersymmetric GUTs.
No associations
LandOfFree
Towards a Two-Loop Matching of Gauge Couplings in Grand Unified Theories does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Towards a Two-Loop Matching of Gauge Couplings in Grand Unified Theories, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Towards a Two-Loop Matching of Gauge Couplings in Grand Unified Theories will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-204288