# Journal of High Energy Physics

Journal of High Energy Physics > 2014 > 2014 > 1 > 1-28

_{ n }-invariant XXX spin chain on

*N*sites with twisted boundary conditions...

Journal of High Energy Physics > 2014 > 2014 > 1 > 1-17

*m*

^{2}of the lightest scalar around a supersymmetry breaking vacuum in generic N=2 gauged supergravity theories for a given gravitino mass

*m*

_{3/2}and cosmological constant

*V*. We review the known bounds which apply to theories with restricted matter content from a new perspective. We then extend these results...

Journal of High Energy Physics > 2014 > 2014 > 1 > 1-46

*S*

^{1}

*/Z*

_{2}) flat extra spatial dimension in the presence of brane-localized terms (BLTs). In general, BLTs affect the masses and the couplings of the KK excitations in a non-trivial way including those for the KK top quarks. On top of that, BLTs also...

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

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

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

*p*

_{ T }within an effective field theory formalism. We also propose an observable

*r*

_{±}with reduced theoretical errors...

Journal of High Energy Physics > 2014 > 2014 > 1 > 1-45

Journal of High Energy Physics > 2014 > 2014 > 1 > 1-28

_{ R }subgroup of the flavor symmetry on such BPS vortex solutions. Our prototypical setting consists...

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

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

*N*= 5 gauged supergravity in three dimensions with compact, non-compact and non-semisimple gauge groups. The theory under consideration is of Chern-Simons type with USp(4,

*k*)/USp(4) × USp(

*k*) scalar manifold. We classify possible semisimple gauge groups of the

*k*= 2, 4 cases and identify some of their critical points. A number of supersymmetric

*AdS*

_{3}critical points are found, and...

Journal of High Energy Physics > 2014 > 2014 > 1 > 1-31

Journal of High Energy Physics > 2014 > 2014 > 1 > 1-46

*N*), = 4 super Yang-Mills theory in four dimensions, which have fields in the bi-fundamental representation, and use it to construct explicitly complete four-vector and four-scalar amplitudes at one loop. For fixed number of...

Journal of High Energy Physics > 2014 > 2014 > 1 > 1-36

*G*and the field strength

*H*=

*dB*. In the course of the derivation, we find an explanation for potential reductions of the isometry group in the dual background. The formalism employed in this paper is illustrated with examples based on tori...

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

Journal of High Energy Physics > 2014 > 2014 > 1 > 1-26

*d*log form, raising the possibility that these loop integrals can be performed directly without Feynman parameters. We do so here to give a new description of the planar 1-loop MHV amplitude in = 4 super Yang-Mills theory...

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

*N*) non-linear sigma model. We use Cayley parametrization. As was shown in the recent works [23,24], both on-shell amplitudes and off-shell currents with odd points have to vanish under Cayley parametrization. We prove the off-shell U(1) identity and fundamental BCJ relation for even-point currents. By taking the...

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

Journal of High Energy Physics > 2014 > 2014 > 1 > 1-17

*ep*→

*e*γπ

*N*, in the Δ(1232)-resonance region is measured using the longitudinally polarized Hera positron beam and an unpolarized hydrogen target. Azimuthal Fourier amplitudes of this asymmetry are extracted separately for two channels,

*ep*→

*e*γπ

^{0}

*p*and

*ep*→

*e*γπ

^{+}

*n*, from a data set collected with a recoil detector...

Journal of High Energy Physics > 2014 > 2014 > 1 > 1-29

*K*3 ×

*S*

^{1}× ℝ

^{1,4}and study pertur-bative BPS states in the near-horizon background of two Neveu-Schwarz fivebranes whose world-volume wraps the

*K*3 ×

*S*

^{1}factor. These states are counted by the spacetime helicity supertrace

*χ*

_{2}(

*τ*) which we evaluate. We find a simple expression for

*χ*

_{2}(

*τ*) in terms of the completion of the mock modular form

*H*

^{(2)}(

*τ*)...

Journal of High Energy Physics > 2014 > 2014 > 1 > 1-57

*d*of extra dimensions. Our method adapts the post-linear formalism of General Relativity to the multidimensional case. The total emitted energy, as well as its angular and frequency distribution and characteristic values, are...