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19912026
most citedThe automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations

7.9k citations

Showing 2008 · hep-thShow all

13 papers · 2 filters

hep-th2008★ 64 cited

Metastable supersymmetry breaking and multitrace deformations of SQCD

Rouven Essig, Jean-Francois Fortin, Kuver Sinha +2

Metastable vacua in supersymmetric QCD in the presence of single and multitrace deformations of the superpotential are explored, with the aim of obtaining an acceptable phenomenolo…

hep-th2008★ 98 cited

Index theorem for topological excitations on R^3 * S^1 and Chern-Simons theory

Erich Poppitz, Mithat Unsal

We derive an index theorem for the Dirac operator in the background of various topological excitations on an R^3 \times S^1 geometry. The index theorem provides more refined data t…

hep-th2008★ 69 cited

Constructing the Tree-Level Yang-Mills S-Matrix Using Complex Factorization

Philip Schuster, Natalia Toro

A remarkable connection between BCFW recursion relations and constraints on the S-matrix was made by Benincasa and Cachazo in 0705.4305, who noted that mutual consistency of differ…

hep-th2008★ 16 cited

Confinement in Yang--Mills: Elements of a Big Picture

M. Shifman, M. Unsal

We present a nontechnical review of the current understanding of the phenomenon of color confinement. The emphasis is put on recent advances. This is a combined and slightly expand…

hep-th2008★ 223 cited

GUTs in Type IIB Orientifold Compactifications

Ralph Blumenhagen, Volker Braun, Thomas W. Grimm +1

We systematically analyse globally consistent SU(5) GUT models on intersecting D7-branes in genuine Calabi-Yau orientifolds with O3- and O7-planes. Beyond the well-known tadpole an…

hep-th2008★ 24 cited

Kahler Independence of the G2-MSSM

Bobby S. Acharya, Konstantin Bobkov

The G2-MSSM is a model of particle physics coupled to moduli fields with interesting phenomenology both for colliders and astrophysical experiments. In this paper we consider a mor…

hep-th2008★ 178 cited

Manifest Ultraviolet Behavior for the Three-Loop Four-Point Amplitude of N=8 Supergravity

Z. Bern, J. J. M. Carrasco, L. J. Dixon +2

Using the method of maximal cuts, we obtain a form of the three-loop four-point scattering amplitude of N=8 supergravity in which all ultraviolet cancellations are made manifest. T…

hep-th2008★ 37 cited

On Yang-Mills Theories with Chiral Matter at Strong Coupling

M. Shifman, Mithat Unsal

Strong coupling dynamics of Yang--Mills theories with chiral fermion content remained largely elusive despite much effort over the years. In this work, we propose a dynamical frame…

hep-th2008★ 31 cited

From multileg loops to trees (by-passing Feynman's Tree Theorem)

German Rodrigo, Stefano Catani, Tanju Gleisberg +2

We illustrate a duality relation between one-loop integrals and single-cut phase-space integrals. The duality relation is realised by a modification of the customary +i0 prescripti…

hep-th2008★ 124 cited

Maximum Wavelength of Confined Quarks and Gluons and Properties of Quantum Chromodynamics

Stanley J. Brodsky, Robert Shrock

Because quarks and gluons are confined within hadrons, they have a maximum wavelength of order the confinement scale. Propagators, normally calculated for free quarks and gluons us…

hep-th2008★ 351 cited

The Two-Loop Six-Gluon MHV Amplitude in Maximally Supersymmetric Yang-Mills Theory

Z. Bern, L. J. Dixon, D. A. Kosower +4

We give a representation of the parity-even part of the planar two-loop six-gluon MHV amplitude of N=4 super-Yang-Mills theory, in terms of loop-momentum integrals with simple dual…

hep-th2008★ 133 cited

QCD-like Theories on R_3\times S_1: a Smooth Journey from Small to Large r(S_1) with Double-Trace Deformations

Mikhail Shifman, Mithat Unsal

We consider QCD-like theories with one massless fermion in various representations of the gauge group SU. The theories are formulated on . In the decompactifica…

hep-th2008★ 4 cited

Conformal Supersymmetry Breaking and Dynamical Tuning of the Cosmological Constant

M. Ibe, Y. Nakayama, T. T. Yanagida

We propose "conformal supersymmetry breaking" models, which tightly relate the conformal breaking scale (i.e. R-symmetry breaking scale) and the supersymmetry breaking scale. The b…