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Showing 2000 · hep-phShow all

15 papers · 2 filters

hep-ph2000★ 18 cited

Probing Slepton Mass Non-Universality at e^+e^- Linear Colliders

Howard Baer, Csaba Balazs, Stefan Hesselbach +2

There are many models with non-universal soft SUSY breaking sfermion mass parameters at the grand unification scale. Even in the mSUGRA model scalar mass unification might occur at…

hep-ph2000★ 15 cited

Can Precision Measurements of Slepton Masses Probe Right Handed Neutrinos?

Howard Baer, Csaba Balazs, J. Kenichi Mizukoshi +1

In a supersymmetric model, the presence of a right handed neutrino with a large Yukawa coupling would affect slepton masses via its contribution to the renormalization group…

hep-ph2000★ 27 cited

Viable Supersymmetric Models with an Inverted Scalar Mass Hierarchy at the GUT Scale

Howard Baer, Csaba Balazs, Pedro Mercadante +2

Supersymmetric models with an inverted mass hierarchy (IMH: multi-TeV first and second generation matter scalars, and sub-TeV third generation and Higgs scalars) have been proposed…

hep-ph2000★ 95 cited

Fate of the Sterile Neutrino

V. Barger, B. Kayser, J. Learned +2

In light of recent Super-Kamiokande data and global fits that seem to exclude both pure ν_μ\to ν_s oscillations of atmospheric neutrinos and pure ν_e \to ν_s oscillations of solar…

hep-ph2000★ 69 cited

Reach of the CERN LHC for the Minimal Anomaly-Mediated SUSY Breaking Model

Howard Baer, J. K. Mizukoshi, Xerxes Tata

We examine the reach of the CERN LHC pp collider for supersymmetric models where the dominant contribution to soft SUSY breaking parameters arises from the superconformal anomaly.…

hep-ph2000★ 20 cited

Displaced Vertices in Extended Supersymmetric Models

S. Hesselbach, F. Franke, H. Fraas

In extended supersymmetric models with additional singlet Higgs fields displaced vertices could be observed if the decay width of the next-to-lightest supersymmetric particle becom…

hep-ph2000

Inclusive charmless semileptonic decay of Λ_b and Br(b ---> X_u l ν_l)

Somasundaram Arunagiri, Hitoshi Yamamoto

We study the inclusive charmless semileptonic decay of , , in the framework of heavy quark expansion and find that the rate is substantially enhanced by spe…

hep-ph2000★ 126 cited

CPT-odd Resonances in Neutrino Oscillations

V. Barger, S. Pakvasa, T. J. Weiler +1

We consider the consequences for future neutrino factory experiments of small CPT-odd interactions in neutrino oscillations. The ν_μ\toν_μand \barν_μ\to\barν_μsurvival probabilitie…

hep-ph2000★ 207 cited

Yukawa Unified Supersymmetric SO(10) Model: Cosmology, Rare Decays and Collider Searches

Howard Baer, Michal Brhlik, Marco A. Diaz +4

It has recently been pointed out that viable sparticle mass spectra can be generated in Yukawa unified SO(10) supersymmetric grand unified models consistent with radiative breaking…

hep-ph2000★ 32 cited

Do Neutrinos Decay?

S. Pakvasa

If neutrinos have masses and mixings, in general some will decay. In models with new particles and new couplings, some decay modes can be fast enough to be of phenomenological inte…

hep-ph2000★ 1 cited

Is Cabibbo-Kobayasi-Maskawa Matrix Unitary?

C. S. Kim, H. Yamamoto

First, we give summary of the present values of CKM matrix elements. Then, we discuss whether CKM matrix is unitary or not, and how we can find out if it is not unitary.

hep-ph2000★ 37 cited

The Reach of the CERN Large Hadron Collider for Gauge-Mediated Supersymmetry Breaking Models

Howard Baer, Pedro G. Mercadante, Xerxes Tata +1

We examine signals for sparticle production at the CERN Large Hadron Collider (LHC) within the framework of gauge mediated supersymmetry breaking models with a low SUSY breaking sc…

hep-ph2000★ 82 cited

Impact of Physical Principles at Very High Energy Scales on the Superparticle Mass Spectrum

Howard Baer, Marco Diaz, Pamela Quintana +1

We survey a variety of proposals for new physics at high scales that serve to relate the multitude of soft supersymmetry breaking parameters of the MSSM. We focus on models where t…

hep-ph2000★ 43 cited

Higgs Production: A Comparison of Parton Showers and Resummation

C. Balazs, J. Huston, I. Puljak

The search for the Higgs boson(s) is one of the major priorities at the upgraded Fermilab Tevatron and at the CERN Large Hadron Collider (LHC). Monte Carlo event generators (MCs) a…

hep-ph2000★ 64 cited

Higgs Boson Production at the LHC with Soft Gluon Effects

C. Balazs, C. -P. Yuan

We present results of QCD corrections to Higgs boson production at the CERN Large Hadron Collider. Potentially large logarithmic contributions from multiple soft-gluon emission are…