Masses of Higgs bosons in grand unified models: suppression of flavor-changing neutral scalar currents

Journal Article · Sun Aug 01 04:00:00 EDT 1982 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:6298877

Berezhiani, Z G; Chkareuli, D L

We discuss the problem of scalar currents which are nondiagonal in flavor in grand unified models. We show that only soft mixing of the weak doublets of Higgs scalars, which arises in these models after the spontaneous breaking of G into SU(3)xSU(2)xU(1) is on the one hand capable of giving large masses (mapprox.(..cap alpha..--1)M, M is the grand unification mass) to all electrically neutral Higgs bosons, blocking Yukawa couplings with flavor change, and can on the other hand induce vacuum expectation values (approx.O(G/sup -1//sub F/)) which can give a reasonable description of the quark-lepton mass spectrum. As an illustration we consider a simple SU(5) model with two quintets of Higgs scalars in a form which can be generalized to an arbitrary number of multiplets of any kind.

• Research Organization: Institute of Physics, Georgian Academy of Sciences
• OSTI ID: 6298877
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 36:2; ISSN SJNCA
• Country of Publication: United States
• Language: English

Related Subjects

645400* -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALGEBRAIC CURRENTS
BOSONS
COMPOSITE MODELS
CURRENTS
ELEMENTARY PARTICLES
FLAVOR MODEL
HIGGS BOSONS
INTERMEDIATE BOSONS
LIE GROUPS
MASS
MATHEMATICAL MODELS
NEUTRAL CURRENTS
PARTICLE MODELS
POSTULATED PARTICLES
QUARK MODEL
REST MASS
SCALAR FIELDS
SU GROUPS
SU-5 GROUPS
SU-8 GROUPS
SYMMETRY BREAKING
SYMMETRY GROUPS
UNIFIED GAUGE MODELS