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19912026
Showing 2002 · hep-phShow all

77 papers · 2 filters

hep-ph2002★ 44 cited

Grand Unification in Higher Dimensions

Lawrence J. Hall, Yasunori Nomura

We have recently proposed an alternative picture for the physics at the scale of gauge coupling unification, where the unified symmetry is realized in higher dimensions but is brok…

hep-ph2002★ 39 cited

The Photon Spectrum in Upsilon Decays

Sean Fleming, Adam K Leibovich

We present a theoretical prediction for the photon spectrum in radiative Upsilon decay. Parts of the spectrum have already been understood, but an understanding of the endpoint reg…

hep-ph2002★ 15 cited

SO(10) GUT Models and Their Present Success in Explaining Mass and Mixing Data

Carl H. Albright

Some features of SO(10) GUT models are reviewed, and a number of such models in the literature are compared. While some have been eliminated by recent neutrino data, others are pre…

hep-ph2002★ 5 cited

Two-Loop Results for M_W in the Standard Model and the MSSM

Ayres Freitas, Sven Heinemeyer, Georg Weiglein

Recent higher-order results for the prediction of the W-boson mass, M_W, within the Standard Model are reviewed and an estimate of the remaining theoretical uncertainties of the el…

hep-ph2002★ 60 cited

Exclusive Double-Charmonium Production from e^+ e^- Annihilation into Two Virtual Photons

Geoffrey T. Bodwin, Eric Braaten, Jungil Lee

We calculate the contributions from QED processes involving two virtual photons to the cross sections for e^+ e^- annihilation into two charmonium states with the same C-parity. Ge…

hep-ph2002★ 4 cited

Estimate of B(K -> pi nu nubar) from Standard Model fits to lambda_t

S. H. Kettell, L. G. Landsberg, H. Nguyen

We estimate B(K -> pi nu nubar) in the context of the Standard Model by fitting for lambda_t = Vtd x V*ts of the `kaon unitarity triangle' relation. We fit data from epsilon_K, the…

hep-ph2002★ 144 cited

Opaque Branes in Warped Backgrounds

Marcela Carena, Eduardo Ponton, Tim Tait +1

We examine localized kinetic terms for gauge fields which can propagate into compact, warped extra dimensions. We show that these terms can have a relevant impact on the values of…

hep-ph2002★ 266 cited

Nonexotic Neutral Gauge Bosons

Thomas Appelquist, Bogdan A. Dobrescu, Adam R. Hopper

We study theoretical and experimental constraints on electroweak theories including a new color-singlet and electrically-neutral gauge boson. We first note that the electric charge…

hep-ph2002★ 142 cited

Manifest CP Violation from Majorana Phases

Andre de Gouvea, Boris Kayser, Rabindra Mohapatra

We hunt for and discuss manifestly CP-violating effects which are mediated by Majorana phases. These phases are present if the Standard Model neutrinos are Majorana particles. We a…

hep-ph2002★ 36 cited

Implications of a Massless Neutralino for Neutrino Physics

I. Gogoladze, J. Lykken, C. Macesanu +1

We consider the phenomenological implications of a soft SUSY breaking term BN at the TeV scale (here B is the U(1)_Y gaugino and N is the right-handed neutrino field). In models wi…

hep-ph2002★ 38 cited

The Resummed Photon Spectrum in Radiative Upsilon Decays

Sean Fleming, Adam K. Leibovich

We present a theoretical prediction for the photon spectrum in radiative Upsilon decay including the effects of resumming the endpoint region, E_γ-> M_Υ/2. Our approach is based on…

hep-ph2002★ 133 cited

Complete two-loop effective potential approximation to the lightest Higgs scalar boson mass in supersymmetry

Stephen P. Martin

I present a method for accurately calculating the pole mass of the lightest Higgs scalar boson in supersymmetric extensions of the Standard Model, using a mass-independent renormal…

hep-ph2002★ 227 cited

Decay of High-Energy Astrophysical Neutrinos

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

Existing limits on the non-radiative decay of one neutrino to another plus a massless particle (e.g., a singlet Majoron) are very weak. The best limits on the lifetime to mass rati…

hep-ph2002★ 232 cited

Exclusive Double-Charmonium Production from e^+ e^- Annihilation into a Virtual Photon

Eric Braaten, Jungil Lee

We calculate the exclusive cross sections for e^+ e^- annihilation into two charmonium states through a virtual photon. Purely electromagnetic contributions are surprisingly large,…

hep-ph2002★ 79 cited

A model of CPT violation for neutrinos

G. Barenboim, J. Lykken

Any local relativistic quantum field theory of Dirac-Weyl fermions conserves CPT. Here we examine whether a simple nonlocal field theory can violate CPT. We construct a new relativ…

hep-ph2002★ 74 cited

The Collider Phenomenology of Technihadrons in the Technicolor Straw Man Model

Kenneth Lane, Stephen Mrenna

We discuss the phenomenology of the lightest SU(3)_C singlet and non-singlet technihadrons in the Straw Man Model of low-scale technicolor (TCSM). The technihadrons are assumed to…

hep-ph2002★ 4 cited

Neutrino Factories: Physics Potential

S. Geer

The physics potential of low-performance and high-performance neutrino factories is briefly reviewed..

hep-ph2002★ 197 cited

Unification of Higgs and Gauge Fields in Five Dimensions

Gustavo Burdman, Yasunori Nomura

We construct realistic theories in which the Higgs fields arise from extra dimensional components of higher dimensional gauge fields. In particular, we present a minimal 5D SU(3)_C…

hep-ph2002★ 45 cited

Super-conservative interpretation of muon g-2 results applied to supersymmetry

Stephen P. Martin, James D. Wells

The recent developments in theory and experiment related to the anomalous magnetic moment of the muon are applied to supersymmetry. We follow a very cautious course, demanding that…

hep-ph2002★ 2 cited

Long Baseline Neutrino Experiments and the LOW solution -- What is Left to Do and How Well Can It Be Done

Gabriela Barenboim, Andre de Gouvea

The neutrino community is convinced that if the LMA solution is indeed correct, the prospects for next-generation, long-baseline neutrino experiments are very exciting. In this wor…

hep-ph2002★ 155 cited

Resummed Effective Lagrangian for Higgs-Mediated FCNC Interactions in the CP-Violating MSSM

Athanasios Dedes, Apostolos Pilaftsis

We derive the general resummed effective Lagrangian for Higgs-mediated flavour-changing neutral-current (FCNC) interactions in the Minimal Supersymmetric Standard Model (MSSM), wit…

hep-ph2002★ 164 cited

Color-flow decomposition of QCD amplitudes

F. Maltoni, K. Paul, T. Stelzer +1

We introduce a new color decomposition for multi-parton amplitudes in QCD, free of fundamental-representation matrices and structure constants. This decomposition has a physical in…

hep-ph2002★ 193 cited

Elastic Scattering and Direct Detection of Kaluza-Klein Dark Matter

Geraldine Servant, Tim M. P. Tait

Recently a new dark matter candidate has been proposed as a consequence of universal compact extra dimensions. It was found that to account for cosmological observations, the masse…

hep-ph2002★ 16 cited

Lifting a Realistic SO(10) Grand Unified Model to Five Dimensions

Carl H. Albright, S. M. Barr

It has been shown recently that the problem of rapid proton decay induced by dimension five operators arising from the exchange of colored Higgsinos can be simply avoided in grand…