Showing papers on "Higgs boson published in 1985"
TL;DR: The SU(3) × SU(2) × U(1) couplings obey the standard relations after E6 breaking, so the standard computation of sin2θ is valid as mentioned in this paper.
668 citations
TL;DR: In this article, the authors explain how to construct models where the weak interactions are broken by the composite Higgs mechanism, which differs from SU(2) × U(1) breaking scenarios that involve either fundamental scalars or technicolor.
572 citations
TL;DR: In this paper, the authors explore the possibility that representations containing doubly charged scalars may participate in the spontaneous breakdown of the SU(2) × U(1) symmetry of electroweak interactions.
414 citations
TL;DR: In this article, general properties of N = 2 gauged extended supergravity coupled to vector multiplets are derived, and the scalar potential of the theory which determines the classical vacuum structure is investigated.
336 citations
TL;DR: In this paper, the Weinberg-Salam model was generalized to include the massive W± and Z gauge bosons in the proton and the structure functions of both transversely and longitudinally polarized W's and Z's were derived.
273 citations
TL;DR: An expression for the light-cone gauge action for the first-quantized heterotic string in the presence of arbitrary background gauge, gravitational, and antisymmetric tensor fields is derived, suggesting a nontrivial structure in embedding the topology of Higgs fields into supersymmetric gauge theories.
Abstract: An expression for the light-cone gauge action for the first-quantized heterotic string in the presence of arbitrary background gauge, gravitational, and antisymmetric tensor fields is derived. The result is a two-dimensional local field theory with N=1/2 supersymmetry. The constraints imposed on the background fields in order to make this theory one-loop finite are derived. These constraints are identical to the equations of motion for the massless fields at the linearized level. Finally, it is shown that if there is no background antisymmetric tensor field, and if the gauge connection is set equal to the spin connection, the effective action is that of an N=1 supersymmetric nonlinear and N=2 supersymmetric Georgi-Glashow models the occurrence of the fermion fractionization is the necessity; the ignorance of it results in the inconsistency in the perturbative calculation of the mass splittings among the members of the supermultiplets. The notable feature of our result is that the degeneracy due to the Jackiw-Rebbi zero mode is not independent of the one required by the supersymmetry, suggesting a nontrivial structure in embedding the topology of Higgs fields into supersymmetric gauge theories.
227 citations
TL;DR: In this paper, the radiative SU(2) × U(1) breaking induced by broken N = 1 supergravity in the light of recent experimental results is examined. But the experimental results (t-quark mass) constrain the supergravity parameters, particularly the bare higgsino mass μ0 and the mixing Higgs mass term μ32.
223 citations
TL;DR: In this paper, a potential for Higgs doublets and triplets that preserves ϱ = M2w/M2wcos2θw=1 was constructed, allowing the triplets to make the dominant contribution to W and Z boson masses.
202 citations
TL;DR: In this paper, the SU(2) v hidden local symmetry is realized through a new dynamical vector boson resonance V and the physical admixtures and masses of W, Z and V bosons are derived and the couplings of the physical bosons to fermions are calculated.
176 citations
TL;DR: In this paper, induced couplings of the type HVγ in the standard model, where H is a Higgs meson and V is a virtual or real neutral gauge boson (Z0 or photon), were calculated.
159 citations
TL;DR: In this article, a simple sum rule relatin the SU(3), SU(2) and U(1) gaugino masses M i.p. was proposed for supersymmetry breaking leptoquark mass splitting.
TL;DR: In this article, the renormalization group equations for the Higgs potential of the two-doublet model were studied under perturbative unification and sufficiently large initial quartic and Higgs-Yukawa couplings such that the full nonlinearities interplay.
TL;DR: In this paper, the authors examined the value of the Higgs mass in models with two Higgs doublets and spontaneous CP violation, and showed that in the presence of a softly broken permutation symmetry, the mass can be lower than one TeV without having to resort to unnatural fine-tuning of parameters.
TL;DR: In this paper, the authors obtained sufficient and necessary conditions for Higgs potentials to be bounded below when they are constructed from two doublets, and also from a singlet of SU (2), and the adjoint and vector representations of SO (n).
Abstract: The author obtains sufficient and necessary conditions for Higgs potentials to be bounded below when they are constructed from: two doublets, and also two doublets and a singlet of SU (2), and the adjoint and vector representations of SO (n). For a potential constructed from the adjoint and fundamental multiplets of SU (n), the problem of necessary and sufficient conditions has been only partly solved.
TL;DR: In this article, minimal L-R symmetric gauge models with spontaneous CP violation were investigated and the effective |ΔS| = 1,2 hamiltonians were calculated giving special attention to a careful evaluation of QCD corrections.
TL;DR: In this article, it was shown that the O(α) radiative corrections to the initial state completely factorize the lowest-order cross-section for both hard and soft (or virtual) photons.
TL;DR: In this paper, the couplings in the standard model with one Higgs doublet and n generations were reduced to about 10-15% and the error was estimated to be about 10−15%.
TL;DR: In this article, the spontaneous breaking of the 6D Poincare invariance and the construction of massive gauge multiplets were studied in a six-dimensional spacetime, where the photon and gluons were associated with Weyl photino and Weyl gluinos.
TL;DR: In this paper, the symmetry breaking patterns of E 6 down to SU(3)×SU(2)×U(1) were considered and the Higgs structure suggested by these theories leads to few possibilities compatible with the values of the strong, weak and electromagnetic coupling constants at low energies.
TL;DR: In this article, the two-and three-scalar Higgs doublet models with spontaneous CP violation were analyzed and compared with the experimental values of e−e and e−m/m.
TL;DR: The functional approach and background field method are first used to derive the general form of the one loop determinant, and the determinant is expanded in powers of derivatives of the background fields for the more complicated problem of a non-abelian gauge field.
Abstract: This paper describes some methods for calculating derivative terms in the one loop effective action for a quantum field theory. The functional approach and background field method are first used to derive the general form of the one loop determinant. Then the determinant is expanded in powers of derivatives of the background fields. The form of this expansion is described for the simple case of an interacting scalar field, and then for the more complicated problem of a non-abelian gauge field. Finally, the expansion is applied to the task of calculating Higgs mass dependent effects in the Glashow-Weinberg-Salam model, and all terms which grow with the Higgs mass M/sub H/ are found in the one loop approximation. The result of this calculation is used to find the dependence of the gauge boson mass ratio rho on M/sub H/, and also to estimate the size of corrections to W and Z scattering theorems.
01 Jan 1985
TL;DR: In this article, it was shown that the critical condition for consistency of the standard model is M q Higgss, i.e., all quarks must be lighter than some critical mass.
TL;DR: In this paper, a simple parameterization of the quark luminosity spectra is presented and used to determine the production of Higgs bosons of mass 0.2-1 TeV in pp collisions for √s = 20 TeV and 40 TeV.
TL;DR: In this article, a one-loop finite grand unified SU(5) model with softly broken SUSY was constructed and the superpartner spectrum was parametrized in terms of only one free parameter.
TL;DR: In this article, the authors make a careful analysis of the constraints on supergravity parameters from the requirement of SU(2)×U(1) symmetry breaking, and obtain fully analytic solutions to the relevant renormalization group equations, they are able to explore the whole range of parameters.
TL;DR: In this paper, the authors show how some supersymmetric E 6 grand unified theories, which may arise as the low-energy limit of superstring theory, provide a natural solution of the fine-tuning problem.
Abstract: We show how some supersymmetric E 6 grand unified theories, which may arise as the low-energy limit of superstring theory, provide a natural solution of the fine-tuning problem. PACS numbers. 12.10.En, 11.30.Pb, 14.80.Gt
01 Jan 1985
TL;DR: The SU(3) c × SU(2) L × U(1)Y model has been shown to accurately describe the interactions of quarks and leptons at energies below, say, 103 GeV as discussed by the authors.
Abstract: In the past five years or so progress in both elementary particle physics and in cosmology has become increasingly dependent upon the interplay between the two disciplines. On the particle physics side, the SU(3) c × SU(2) L × U(1)Y model seems to very accurately describe the interactions of quarks and leptons at energies below, say, 103 GeV. At the very least, the so-called standard model is a satisfactory, effective low energy theory. The frontiers of particle physics now involve energies of much greater than 103 GeV—energies which are not now available in terrestrial accelerators, nor are ever likely to be available in terrestrial accelerators. For this reason particle physicists have turned both to the early Universe with its essentially unlimited energy budget (up to 1019 GeV) and high particle fluxes (up to 10107cm-2s-1), and to various unique, contemporary astrophysical environments (centers of main sequence stars where temperatures reach 108 K, neutron stars where densities reach 1014 – 1015gcm-3, our galaxy whose magnetic field can impart 1011 GeV to a Dirac magnetic charge, etc.) as non-traditional laboratories for studying physics at very high energies and very short distances.
TL;DR: The neutron EDM in the Weinberg CP-violation model is shown to be dominated by the neutral Higgs boson interaction and to exceed the present experimental limitations by 2-3 orders of magnitude as mentioned in this paper.
TL;DR: In a class of extended Higgs structures containing a light or massless pseudoscalar, it is quite likely the normal Wienberg-Salam Higgs particle decays preferentially into spin-zero bosons if its mass is below the t t threshold as discussed by the authors.