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Showing 2008 · hep-phShow all

19 papers · 2 filters

hep-ph2008★ 51 cited

The AdS/QCD Correspondence: Still Undelivered

Csaba Csaki, Matthew Reece, John Terning

We consider the particle spectrum and event shapes in large N gauge theories in different regimes of the short-distance 't Hooft coupling, lambda. The mesons in the small lambda li…

hep-ph2008★ 8 cited

Parameter counting in models with global symmetries

Joshua Berger, Yuval Grossman

We present rules for determining the number of physical parameters in models with exact flavor symmetries. In such models the total number of parameters (physical and unphysical) n…

hep-ph2008★ 45 cited

Complete One-Loop MSSM Predictions for B --> lepton lepton' at the Tevatron and LHC

Athanasios Dedes, Janusz Rosiek, Philip Tanedo

During the last few years the Tevatron has dramatically improved the bounds on rare B-meson decays into two leptons. In the case of B_s --> mu+ mu-, the current bound is only ten t…

hep-ph2008★ 11 cited

Model Discrimination at the LHC: a Case Study

Gregory Hallenbeck, Maxim Perelstein, Christian Spethmann +2

We investigate the potential of the Compact Muon Solenoid (CMS) detector at the Large Hadron Collider (LHC) to discriminate between two theoretical models predicting anomalous even…

hep-ph2008★ 6 cited

Leptogenesis with Composite Neutrinos

Yuval Grossman, Yuhsin Tsai

Models with composite singlet neutrinos can give small Majorana or Dirac masses to the active neutrinos. The mechanism is based on the fact that conserved chiral symmetries give ma…

hep-ph2008★ 73 cited

Polarized Tops from Stop Decays at the LHC

Maxim Perelstein, Andreas Weiler

In supersymmetric models, scalar top quarks, or stops, generically have parity-violating couplings to top quarks. As a result, tops produced in stop decays should be polarized. In…

hep-ph2008★ 61 cited

A New Approach to mu-Bmu

Csaba Csaki, Adam Falkowski, Yasunori Nomura +1

We present a new approach to the mu-Bmu problem of gauge mediated supersymmetry breaking. Rather than reducing the generically large contribution to Bmu we point out that acceptabl…

hep-ph2008★ 35 cited

Tenth-Order Lepton Anomalous Magnetic Moment -- Second-Order Vertex Containing Two Vacuum Polarization Subdiagrams, One Within the Other

T. Aoyama, M. Hayakawa, T. Kinoshita +1

This paper reports the tenth-order QED contribution to the g-2 of electron and muon from two gauge-invariant sets, Set I(g) and Set I(h). In the case of electron g-2 Set I(g) consi…

hep-ph2008★ 12 cited

Higher Dimensional Operators in the MSSM

I. Antoniadis, E. Dudas, D. M. Ghilencea +1

The origin and the implications of higher dimensional effective operators in 4-dimensional theories are discussed in non-supersymmetric and supersymmetric cases. Particular attenti…

hep-ph2008★ 226 cited

Delta F=2 Observables and Fine-Tuning in a Warped Extra Dimension with Custodial Protection

Monika Blanke, Andrzej J. Buras, Bjoern Duling +2

We present a complete study of Delta S = 2 and Delta B = 2 processes in a warped extra dimensional model with a custodial protection of Z b_L bar b_L, including epsilon_K, Delta M_…

hep-ph2008★ 19 cited

Signatures of Pseudoscalar Photon Mixing in CMB Radiation

Nishant Agarwal, Pankaj Jain, Douglas W. McKay +1

We model the effect of photon and ultra-light pseudoscalar mixing on the propagation of electromagnetic radiation through the extragalactic medium. The medium is modelled as a larg…

hep-ph2008★ 41 cited

Eighth-Order Vacuum-Polarization Function Formed by Two Light-by-Light-Scattering Diagrams and its Contribution to the Tenth-Order Electron g-2

T. Aoyama, M. Hayakawa, T. Kinoshita +2

We have evaluated the contribution to the anomalous magnetic moment of the electron from six tenth-order Feynman diagrams which contain eighth-order vacuum-polarization function fo…

hep-ph2008★ 99 cited

A Simple Flavor Protection for RS

Csaba Csaki, Adam Falkowski, Andreas Weiler

We present a simple variation of warped flavor models where the hierarchies of fermion masses and mixings are still explained but dangerous flavor violating effects in the Kaon sec…

hep-ph2008★ 172 cited

A Model of Lepton Masses from a Warped Extra Dimension

C. Csaki, C. Delaunay, C. Grojean +1

In order to explain the non-hierarchical neutrino mixing angles and the absence of lepton flavor violating processes in the context of warped extra dimensions one needs to introduc…

hep-ph2008★ 69 cited

MSSM with Dimension-five Operators (MSSM_5)

I. Antoniadis, E. Dudas, D. M. Ghilencea +1

We perform a general analysis of the R-parity conserving dimension-five operators that can be present beyond the Minimal Supersymmetric Standard Model. Not all these operators are…

hep-ph2008★ 329 cited

The Flavor of the Composite Pseudo-Goldstone Higgs

Csaba Csaki, Adam Falkowski, Andreas Weiler

We study the flavor structure of 5D warped models that provide a dual description of a composite pseudo-Goldstone Higgs. We first carefully re-examine the flavor constraints on the…

hep-ph2008★ 39 cited

A Weakly Coupled Ultraviolet Completion of the Littlest Higgs with T-parity

Csaba Csaki, Johannes Heinonen, Maxim Perelstein +1

We construct a weakly coupled, renormalizable ultraviolet completion of the Littlest Higgs model with T-parity (LHT), based on an SU(5)xSU(2)xU(1) gauge theory with a discrete Z_2…

hep-ph2008★ 9 cited

Hadronization, spin, and lifetimes

Yuval Grossman, Itay Nachshon

Measurements of lifetimes can be done in two ways. For very short lived particles, the width can be measured. For long lived ones, the lifetime can be directly measured, for exampl…

hep-ph2008★ 114 cited

B, D and K decays

G. Buchalla, T. K. Komatsubara, F. Muheim +124

With the advent of the LHC, we will be able to probe New Physics (NP) up to energy scales almost one order of magnitude larger than it has been possible with present accelerator fa…