5627469
Brown-Henneaux's canonical approach to topologically massive gravity
We analyze the symmetry realized asymptotically on the two dimensional boundary of AdS3 geometry in topologically massive gravity, which consists of the gravitational Chern-Simons term as well as the usual Einstein-Hilbert and negative cosmological constant terms. Our analysis is based on the conventional canonical method and proceeds along the line completely parallel to the original Brown and Henneaux's. In spite of the presence of the gravitational Chern-Simons term, it is confirmed by the canonical method that the boundary theory actually has the conformal symmetry satisfying the left and right moving Virasoro algebras. The central charges of the Virasoro algebras are computed explicitly and are shown to be left-right asymmetric due to the gravitational Chern-Simons term. It is also argued that the Cardy's formula for the BTZ black hole entropy capturing all higher derivative corrections agrees with the extended version of the Wald's entropy formula. The M5-brane system is illustrated as an application of the present calculation.
125223052
Renormalization Group Approach to Summing QCD Corrections in Hadronic Decays of the Higgs Boson
117266984
Screening theorem for the Higgs decays into the gauge boson pairs
The radiative corrections to the decays of the neutral CP-even Higgs boson $H$ into a longitudinal gauge boson pair, {\it i.e.}, $H \rightarrow Z_LZ_L$ and $W^+_LW^-_L$ are analyzed in the two Higgs doublet model by making use of the equivalence theorem. The sensitivity of the decay rates to the masses of the heavier Higgs bosons, charged $G^{\pm}$ and CP-odd neutral $A$ bosons as well as CP-even neutral $h$ boson, is investigated. Though the width $\Gamma (H \rightarrow Z_LZ_L)$ is insensitive to the masses of heavier Higgs bosons, $\Gamma (H \rightarrow W^+_LW^-_L)$ is sensitive and the radiative corrections are minimized for $m_G = m_A$. These results are explained completely on the basis of a new screening theorem for the vertices, which is closely connected with the custodial $SU(2)_V$ symmetry.
2180416
Left–right asymmetric holographic RG flow with gravitational Chern–Simons term
Abstract We consider the holographic renormalization group (RG) flow in three-dimensional gravity with the gravitational Chern–Simons term coupled to some scalar fields. We apply the canonical approach to this higher derivative case and employ the Hamilton–Jacobi formalism to analyze the flow equations of two-dimensional field theory. Especially we obtain flow equations of Weyl and gravitational anomalies, and derive c -functions for left and right moving modes. Both of them are monotonically non-increasing along the flow, and the difference between them is determined by the coefficient of the gravitational Chern–Simons term. This is completely consistent with the Zamolodchikov's c -theorem for parity-violating two-dimensional quantum field theories.
14591597
New derivation of anomaly mediated gaugino mass in the higher derivative regularization method
The technique of higher derivative regularization is applied to the Super-Weyl-Kahler anomaly in supergravity coupled with chiral matters and gauge multiplet. Our method makes it possible to derive directly and diagrammatically the formulae for the gaugino mass (in the Abelian case). Our procedure is applied to derivation of not only the mass formulae known in the anomaly mediation scenario, but also additional terms that depend on the Kahler potential.
12473628
Renormalization Group Flow near the Superconformal Points in N=2 Supersymmetric Gauge Theories
The behavior of the beta-function of the low-energy effective coupling is determined near the superconformal points in moduli space for two cases, the N = 2 supersymmetric SU(2) QCD with several massive matter hypermultiplets and the SU(3) Yang-Mills theory. The renormalization group flow is unambiguously fixed by looking at limited types of deformation near the superconformal points. It is pointed out that the scaling dimension of the beta­ function is controlled by the scaling behavior of moduli parameters, and the relation between them is explicitly worked out. Our scaling dimensions for the beta-functions are consistent in part with the results obtained recently by Bilal and Ferrari using a different method for the SU(2) QCD.
118419145
Overview of Triple and Quartic Gauge Coupling Measurements at the LHC
Scrutiny of the structure of electroweak gauge boson self-interactions through triple and quartic gauge boson couplings (TGCs and QGCs) constitutes an important part of the physics program of the Large Hadron Collider (LHC). Triboson production and vector boson scattering (VBS) are directly sensitive to QGCs while vector boson fusion (VBF) offers a new window in the study of TGCs, which is complementary to conventional measurements using diboson production. In this contribution, an overview of recent TGC and QCG measurements using triboson production, VBS and VBF by the ATLAS and CMS experiments at the LHC is presented.