Showing 2003 · hep-phShow all

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hep-ph2003★ 390 cited

The Soft Supersymmetry-Breaking Lagrangian: Theory and Applications

D. J. H. Chung, L. L. Everett, G. L. Kane +3

After an introduction recalling the theoretical motivation for low energy (100 GeV to TeV scale) supersymmetry, this review describes the theory and experimental implications of th…

hep-ph2003★ 100 cited

Effective theory approach to unstable particle production

M. Beneke, A. P. Chapovsky, A. Signer +1

Using the hierarchy of scales between the mass, , and the width, , of a heavy, unstable particle we construct an effective theory that allows calculations for resonant proces…

hep-ph2003★ 185 cited

Matching Matrix Elements and Parton Showers with HERWIG and PYTHIA

Stephen Mrenna, Peter Richardson

We report on our exploration of matching matrix element calculations with the parton-shower models contained in the event generators HERWIG and Pythia. We describe results for e+e-…

hep-ph2003★ 8 cited

B_s-B_s-bar mixing in an SO(10) SUSY GUT model

Sebastian Jager, Ulrich Nierste

We perform a renormalisation group analysis of the SO(10) model proposed by Chang, Masiero and Murayama, which links the large atmospheric neutrino mixing angle to loop-induced tra…

hep-ph2003★ 45 cited

Unified Graphical Summary of Neutrino Mixing Parameters

Olga Mena, Stephen Parke

The neutrino mixing parameters are presented in a number of different ways by the various experiments, e.g. SuperKamiokande, K2K, SNO, KamLAND and Chooz and also by the Particle Da…

hep-ph2003★ 103 cited

Two-loop scalar self-energies in a general renormalizable theory at leading order in gauge couplings

Stephen P. Martin

I present results for the two-loop self-energy functions for scalars in a general renormalizable field theory, using mass-independent renormalization schemes based on dimensional r…

hep-ph2003★ 162 cited

Complete NNLO QCD Analysis of B -> X_s l^+ l^- and Higher Order Electroweak Effects

Christoph Bobeth, Paolo Gambino, Martin Gorbahn +1

We complete the next-to-next-to-leading order QCD calculation of the branching ratio for B -> X_s l^+ l^- including recent results for the three-loop anomalous dimension matrix and…

hep-ph2003★ 1 cited

Neutrino Mixing and Cosmology

Nicole F. Bell

We review the consequences of neutrino mixing in the early universe. For both active-sterile mixing or mixing between three active neutrinos only, the consequences of oscillations…

hep-ph2003★ 318 cited

Precise Prediction for the W-Boson Mass in the Standard Model

M. Awramik, M. Czakon, A. Freitas +1

The presently most accurate prediction for the W-boson mass in the Standard Model is obtained by combining the complete two-loop result with the known higher-order QCD and electrow…

hep-ph2003★ 23 cited

Analytic Estimates of the QCD Corrections to Neutrino-Nucleus Scattering

Bogdan A. Dobrescu, R. Keith Ellis

We study the QCD corrections to neutrino deep-inelastic scattering on a nucleus, and analytically estimate their size. For an isoscalar target, we show that the dominant QCD correc…

hep-ph2003★ 67 cited

Slepton Production at e+e- and e-e- Linear Colliders

A. Freitas, A. von Manteuffel, P. M. Zerwas

High-precision analyses are presented for the production of scalar sleptons, selectrons and smuons in supersymmetric theories, at future e+e- and e-e- linear colliders. Threshold p…

hep-ph2003★ 3 cited

Long Baseline Neutrino Oscillations: Parameter Degeneracies and JHF/NuMI Complementarity

Hisakazu Minakata, Hiroshi Nunokawa, Stephen Parke

A summary of the parameter degeneracy issue for long baseline neutrino oscillations is presented and how a sequence of measurements can be used to resolve all degeneracies. Next, a…

hep-ph2003★ 10 cited

Lower limits on R-parity-violating couplings in supersymmetric models with light squarks

Edmond L. Berger, Zack Sullivan

We interpret the results of searches for strongly interacting massive particles to place absolute lower limits on R-parity-violating couplings for squarks with mass (m_\tilde{q}) b…

hep-ph2003★ 438 cited

GADZOOKS! Antineutrino Spectroscopy with Large Water Cerenkov Detectors

John F. Beacom, Mark R. Vagins

We propose modifying large water Čerenkov detectors by the addition of 0.2% gadolinium trichloride, which is highly soluble, newly inexpensive, and transparent in solution. Since G…

hep-ph2003★ 101 cited

Sensitivity to and in the Decaying Astrophysical Neutrino Scenario

John F. Beacom, Nicole F. Bell, Dan Hooper +2

We have previously shown that the decay of high-energy neutrinos from distant astrophysical sources would be revealed by flavor ratios that deviate strongly from the $ϕ_{ν_e}:ϕ_{ν_…

hep-ph2003★ 140 cited

Higgsless Theory of Electroweak Symmetry Breaking from Warped Space

Yasunori Nomura

We study a theory of electroweak symmetry breaking without a Higgs boson, recently suggested by Csaki et al. The theory is formulated in 5D warped space with the gauge bosons and m…

hep-ph2003★ 72 cited

Coherent Phase Argument for Inflation

Scott Dodelson

Cosmologists have developed a phenomenally successful picture of structure in the universe based on the idea that the universe expanded exponentially in its earliest moments. There…

hep-ph2003★ 217 cited

The Higgs Mass Bound in Gauge Extensions of the Minimal Supersymmetric Standard Model

Puneet Batra, Antonio Delgado, David E. Kaplan +1

The minimal supersymmetric standard model, and extensions, have stringent upper bounds on the mass of the lightest Higgs boson if perturbativity up to the Planck scale is assumed.…

hep-ph2003★ 149 cited

CP asymmetry in flavour-specific B decays beyond leading logarithms

M. Beneke, G. Buchalla, A. Lenz +1

We compute next-to-leading order QCD corrections to the CP asymmetry a_{fs} = Im(Gamma_{12}/M_{12}) in flavour-specific B_{d,s} decays such as B_d->X l nu or B_s->D^-_s pi^+. The c…

hep-ph2003★ 55 cited

Invisible Z-Boson Decays at e+e- Colliders

Marcela Carena, Andre de Gouvea, Ayres Freitas +1

The measurement of the invisible Z-boson decay width at e+e- colliders can be done "indirectly", by subtracting the Z-boson visible partial widths from the Z-boson total width, or…

hep-ph2003★ 186 cited

Next-to-leading order QCD predictions for W+2j and Z+2j production at the CERN LHC

John Campbell, R. K. Ellis, D. Rainwater

We present cross sections and differential distributions for QCD radiative corrections to the QCD processes pp -> W+2j and pp -> Z+2j at the CERN LHC. Calculations are performed wi…

hep-ph2003★ 33 cited

Test of Gauge-Yukawa Unification

Ilia Gogoladze, Yukihiro Mimura, S. Nandi +1

Recently it has been proposed that, in the framework of quantum field theory, both the Standard Model gauge and Yukawa interactions arise from a single gauge interaction in higher…

hep-ph2003★ 112 cited

On the reheating stage after inflation

Edward W. Kolb, Alessio Notari, Antonio Riotto

We point out that inflaton decay products acquire plasma masses during the reheating phase following inflation. The plasma masses may render inflaton decay kinematicaly forbidden,…

hep-ph2003★ 118 cited

Evaluation of two-loop self-energy basis integrals using differential equations

Stephen P. Martin

I study the Feynman integrals needed to compute two-loop self-energy functions for general masses and external momenta. A convenient basis for these functions consists of the four…