# Journal of High Energy Physics

Journal of High Energy Physics > 2014 > 2014 > 1 > 1-21

Journal of High Energy Physics > 2014 > 2014 > 1 > 1-44

*d*+ 2)-dimensional bulk spacetime from (

*d*+ 1)-dimensional boundary data, particularly concentrating on backgrounds which break (

*d*+ 1)-dimensional Lorentz invariance. For a large class of such spacetimes, there exist null geodesics which do not reach the boundary. Therefore classically one might guess some information is trapped in the bulk and thus invisible...

Journal of High Energy Physics > 2014 > 2014 > 1 > 1-15

*γ*of the standard CKM unitarity triangle can be determined from

*B*→

*DK*decays with a very small irreducible theoretical error, which is only due to second order electroweak corrections. We study these contributions and estimate that their impact on the

*γ*determination is to introduce a shift |δ

*γ*| ≲ $ \mathcal{O}\left( {1{0^{-7 }}} \right) $ , well below any present or planned...

Journal of High Energy Physics > 2014 > 2014 > 1 > 1-19

*N*expansion in normal matrix models and the asymptotic expansion of the determinant of the Hilb map, appearing in the study of critical metrics on complex manifolds via projective embeddings. This analogy helps to understand the geometric meaning of the expansion of matrix model free energy and its relation to gravitational effective actions in...

Journal of High Energy Physics > 2014 > 2014 > 1 > 1-27

Journal of High Energy Physics > 2014 > 2014 > 1 > 1-32

Journal of High Energy Physics > 2014 > 2014 > 1 > 1-86

^{−1}and 19.4 fb

^{−1}collected with the CMS detector in pp collisions at = 7 and 8 TeV, respectively. The Higgs boson candidates are selected in events with two or three charged leptons. An excess of events above background...

Journal of High Energy Physics > 2014 > 2014 > 1 > 1-14

*W*

_{flux}plays a crucial role in determining the scales of IIB string compactifications after moduli stabilisation. It has been argued that values of

*W*

_{flux}≪ 1 are preferred, and even required for physical and consistency reasons. This note revisits these arguments. We establish that the couplings of heavy Kaluza-Klein modes to light states scale with...

Journal of High Energy Physics > 2014 > 2014 > 1 > 1-18

*D*7 branes in

*AdS*

_{5}. The resulting geometry including the backreaction of the branes is known in a perturbation expansion in the ratio

*N*

_{ f }

*/N*

_{ c }. We consider the expansion to first order, and compute the entanglement entropy...

Journal of High Energy Physics > 2014 > 2014 > 1 > 1-14

*N*) gauge group admits a discrete analog of the

*θ*parameter. We describe the origin of this parameter in = 1 theories from Type I’ string theory, and study its effect on the 5d superconformal fixed point theories with an Sp(1) = SU(2) gauge group by computing the superconformal index. Our result confirms the lack of global symmetry enhancement...

Journal of High Energy Physics > 2014 > 2014 > 1 > 1-39

*h*→ γγ decay rate for new lepton masses in the 300 GeV-1 TeV range. We analyze vacuum stability implications for different hypercharges. Effects in

*h*→

*Z*γ are typically much smaller than in

*h*→ γγ, but distinct among the considered...

Journal of High Energy Physics > 2014 > 2014 > 1 > 1-49

_{R}symmetry, consisting of a single right handed neutrino superfield with an appropriate R charge. The lepton number (

*L*) of the standard model fermions are identified with the negative of their R-charges. As a result, a subset of leptonic R-parity violating operators can be present and are consistent...

Journal of High Energy Physics > 2014 > 2014 > 1 > 1-13

Journal of High Energy Physics > 2014 > 2014 > 1 > 1-48

Journal of High Energy Physics > 2014 > 2014 > 1 > 1-48

Journal of High Energy Physics > 2014 > 2014 > 1 > 1-21

Journal of High Energy Physics > 2014 > 2014 > 1 > 1-34

*G*× U(1), where

*G*is a discrete nonabelian subgroup of SU(2), with both F-term and (abelian) D-term supersymmetry breaking. A good fit to the fermion masses and mixing is obtained with the same U(1) charges for the left- and right- handed quarks of the first two families and the...

Journal of High Energy Physics > 2014 > 2014 > 1 > 1-22

*B*→

*K*

^{∗}

*μ*

^{+}

*μ*

^{−}data shows indications for a large new-physics contribution to the Wilson coefficient of the semi-leptonic vector operator. In this article we consider a simple

*Z*

^{′}-boson model of 3-3-1 type that can accommodate such an effect without violating any other constraint from quark-flavour physics. Implications for yet unobserved decay modes such as

*B*...

Journal of High Energy Physics > 2014 > 2014 > 1 > 1-22

Journal of High Energy Physics > 2014 > 2014 > 1 > 1-33