“…We investigate the signatures at the Large Hadron Collider of a minimal model where the dark matter particle is a Majorana fermion that couples to the Standard Model via one or several coloured mediators. …”
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“…Within an effective field theory approach we find that $2 \rightarrow 2$ fermion scattering amplitudes saturate the unitarity bound below 9 and 80 TeV, respectively for $b \rightarrow c \ell \bar{\nu }$ and $b \rightarrow s \ell \bar{\ell }$ transitions. …”
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“…We argue that the Nelson–Barr solution to the Strong CP Problem can be naturally realized in an E$_6$ grand-unified theory. The chiral SM fermions reside in three generations of E$_6$ fundamentals together with heavy vectorlike down quarks, leptons doublets and right-handed neutrinos. …”
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“…They are formulated in terms of a \widehat c=1 theory, with a \IZ_2-twisted scalar field and a Weyl-Majorana fermion in the Ramond sector. We have solved the superloop equations to all orders in the genus expansion and obtained the explicit expressions for the correlation functions of gravitationally dressed scaling operators in the NS- and R-sector. …”
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“…We formulate supersymmetric non-Hermitian quantum field theories with PT symmetry, starting with free chiral boson/fermion models and then including trilinear superpotential interactions. …”
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“…We propose a predictive radiative seesaw model at one-loop level with a flavor dependent gauge symmetry U(1)xB3−xe−μ+τ and Majorana fermion dark matter. For the neutrino mass matrix, we obtain an A1 type texture (with two zeros) that provides us several predictions such as the normal ordering for the neutrino masses. …”
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“…The third generation fermions receive masses from the tree-level superpotential. …”
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“…Specifically, we study the behaviour of fermions, gauge bosons and scalars in this geometry and their implications on electroweak physics. …”
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“…Bosons are associated with composite operators and their propagators are dynamically generated by fermion bubbles. Renormalization-group flows between pairs of interacting fixed points satisfy a set of non-perturbative g <-> 1/g dualities. …”
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“…We present a method to compute non-perturbatively the renormalization constant of the scalar density for Ginsparg-Wilson fermions. It relies on chiral symmetry and is based on a matching of renormalization group invariant masses at fixed pseudoscalar meson mass, making use of results previously obtained by the ALPHA Collaboration for O(a)-improved Wilson fermions. …”
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“…Possible alternative ground states other than the composite fermions are discussed.…”
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“…A junction between two boundaries of a topological superconductor (TSC), mediated by localized edge modes of Majorana fermions, is investigated. The tunneling of fermions across the junction depends on the magnetic flux. …”
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“…Broken continuous scale symmetry into discrete scale symmetry also appears for a charged and massless Dirac fermion in an attractive 1/r Coulomb potential. The purpose of this article is to demonstrate the universality of this quantum phase transition and to present convincing experimental evidence of its existence for a charged and massless fermion in an attractive Coulomb potential as realized in graphene.…”
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“…The comparison of electrons in antimony and fermions in (3)He paves the way to a quantification of momentum-conserving fermion-fermion collision rate in different Fermi liquids.…”
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“…The authors discuss the production of Higgs bosons together with a heavy fermion pair in e/sup +/e/sup -/ collisions. The ratio of the total cross section for this process to the mu -pair cross section may vary between 10/sup -6/ and 10/sup -4/ at PETRA-PEP energies. (8 refs) .…”
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“…Also shown are Higgs boson results when including fourth generation fermion models.…”
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“…In this review, three subjects are discussed: a phenomenological application of lattice predictions to $K^0$--$\bar K^0$ mixing in Super Symmetry; a discussion of the non-perturbative renormalization methods for four-fermion operators and a new approach to extract weak matrix elements in effective theories denoted as OPE without OPE (operator product expansion without operator product expansion)…”
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“…Formulation of the Electroweak theory: charged and neutral currents, Higgs mechanism and gauge boson masses, Yuhawa interactions and fermion masses and Cabibbo-Kobayashi-Maskawa matrix. …”
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“…The Higgs mechanism Gauge boson and fermion masses. Yukawa coupling. Charges current couplings. …”
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“…We study the possibility of uniquely identifying the effects of graviton exchange from other new physics in high energy e sup + e sup - annihilation into fermion-pairs. For this purpose, we use as basic observable a specific asymmetry among integrated differential distributions, that seems particularly suitable to directly test for such gravitational effects in the data analysis.…”
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