TY - JOUR
T1 - Aspects of the grand unification of strong, weak and electromagnetic interactions
AU - Buras, A. J.
AU - Ellis, J.
AU - Gaillard, M. K.
AU - Nanopoulos, D. V.
N1 - Funding Information:
It is possible that the correct field theory of the strong interactions has been found, namely QCD, and likely that the correct unified gauge theory of the weak and electromagnetic interactions will be established quite soon. It therefore seems appropriate to consider the grand unification of strong, weak, and electromagnetic interactions \[1,2\],e ven if some people may consider such an enterprise premature or foolhardy. At least one may discover what some of the questions will be, even if one finds no answers. One may also find useful constraints on our present-day Address after l October 1977: Theory Group, FNAL, P.O. Box 500, Batavia, IL 60510, ¢t~t USA. And Laboratoire de Physique Th~orique et Particules Eldmentaires, Laboratoire associ~ au CNRS, Orsay, France. *** Address after 1 September 1977: Physics Department, Harvard University, Cambridge, MA 02138, USA. Work also supported in part by the US Energy Research and Development Administration, and in part by the University of Wisconsin Research Committee with funds granted by the Wisconsin Alumni Research Foundation.
PY - 1978/3/27
Y1 - 1978/3/27
N2 - We study issues arising in attempts to unify strong and other elementary particle interactions. The proton lifetime is estimated in theories with second-order baryon number violation, and found to be O(103-104) longer than naive dimensional counting suggested. The renormalization of quark and lepton masses below the grand unification mass is considered in some detail. Application is made to the SU(5) model of Georgi and Glashow, and we find strange and bottom quark masses: ms ≈ 0.4-0.5 GeV, mb ≈ 4.8-5.6 GeV. Inputs are the values of the strong interactions coupling constant favoured by electroproduction and charmonium analyses, and the observed muon and heavy lepton (τ) masses. These estimates are substantially increased if there are more than six flavours of quark. Symmetry breaking in the SU(5) model is studied, including radiative corrections to the effective Higgs potential.
AB - We study issues arising in attempts to unify strong and other elementary particle interactions. The proton lifetime is estimated in theories with second-order baryon number violation, and found to be O(103-104) longer than naive dimensional counting suggested. The renormalization of quark and lepton masses below the grand unification mass is considered in some detail. Application is made to the SU(5) model of Georgi and Glashow, and we find strange and bottom quark masses: ms ≈ 0.4-0.5 GeV, mb ≈ 4.8-5.6 GeV. Inputs are the values of the strong interactions coupling constant favoured by electroproduction and charmonium analyses, and the observed muon and heavy lepton (τ) masses. These estimates are substantially increased if there are more than six flavours of quark. Symmetry breaking in the SU(5) model is studied, including radiative corrections to the effective Higgs potential.
UR - http://www.scopus.com/inward/record.url?scp=49349124128&partnerID=8YFLogxK
U2 - 10.1016/0550-3213(78)90214-6
DO - 10.1016/0550-3213(78)90214-6
M3 - Article
AN - SCOPUS:49349124128
SN - 0550-3213
VL - 135
SP - 66
EP - 92
JO - Nuclear Physics, Section B
JF - Nuclear Physics, Section B
IS - 1
ER -