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Showing 2006 · hep-phShow all

18 papers · 2 filters

hep-ph2006★ 103 cited

A Simple Model of Low-scale Direct Gauge Mediation

Csaba Csáki, Yuri Shirman, John Terning

We construct a calculable model of low-energy direct gauge mediation making use of the metastable supersymmetry breaking vacua recently discovered by Intriligator, Seiberg and Shih…

hep-ph2006★ 89 cited

The Gaugephobic Higgs

Giacomo Cacciapaglia, Csaba Csáki, Guido Marandella +1

We present a class of models that contains Randall-Sundrum and Higgsless models as limiting cases. Over a wide range of the parameter space WW scattering is mainly unitarized by Ka…

hep-ph2006★ 37 cited

Indirect Detection of Little Higgs Dark Matter

Maxim Perelstein, Andrew Spray

Little Higgs models with T parity contain an attractive dark matter candidate, the heavy photon. We compute the cross section of the heavy photon annihilation into Z-photon pairs,…

hep-ph2006★ 46 cited

Collider Signature of T-quarks

Marcela Carena, Jay Hubisz, Maxim Perelstein +1

Little Higgs models with T Parity contain new vector-like fermions, the T-odd quarks or "T-quarks", which can be produced at hadron colliders with a QCD-strength cross section. Eve…

hep-ph2006★ 116 cited

Analysis of Br(B-->X_s gamma) at NNLO with a Cut on Photon Energy

Thomas Becher, Matthias Neubert

By combining a recent estimate of the total B-->X_s gamma branching fraction at O(alpha_s^2) with a detailed analysis of the effects of a cut E_gamma>1.6GeV on photon energy, a pre…

hep-ph2006★ 26 cited

Searching for CPT violation in top anti-top production

J. A. R. Cembranos, A. Rajaraman, F. Takayama

We analyze the possibility of observing CPT violation in the top sector. We present current bounds on CPT violation in this sector, and analyze the prospects of improving these bou…

hep-ph2006★ 50 cited

Enhanced Non-local Power Corrections to the B->X_s+gamma Decay Rate

Seung J. Lee, Matthias Neubert, Gil Paz

A new class of enhanced non-perturbative corrections to the inclusive B->X_s+gamma decay rate is identified, which contribute first at order Lambda/m_b in the heavy-quark expansion…

hep-ph2006★ 156 cited

Toward a Systematic Holographic QCD: A Braneless Approach

Csaba Csaki, Matthew Reece

Recently a holographic model of hadrons motivated by AdS/CFT has been proposed to fit the low energy data of mesons. We point out that the infrared physics can be developed in a mo…

hep-ph2006★ 316 cited

Factorization and Momentum-Space Resummation in Deep-Inelastic Scattering

Thomas Becher, Matthias Neubert, Ben D. Pecjak

Renormalization-group methods in soft-collinear effective theory are used to perform the resummation of large perturbative logarithms for deep-inelastic scattering in the threshold…

hep-ph2006★ 86 cited

A New Custodian for a Realistic Higgsless Model

Giacomo Cacciapaglia, Csaba Csáki, Guido Marandella +1

We present an example of a realistic Higgsless model that makes use of alternative assignments for the top and bottom quarks recently proposed by Agashe et al. which resu…

hep-ph2006★ 129 cited

Big Bang Nucleosynthesis with Long Lived Charged Massive Particles

Kazunori Kohri, Fumihiro Takayama

We consider Big Bang Nucleosynthesis (BBN) with long lived charged massive particles. Before decaying, the long lived charged particle recombines with a light element to form a bou…

hep-ph2006★ 219 cited

Threshold Resummation in Momentum Space from Effective Field Theory

Thomas Becher, Matthias Neubert

Methods from soft-collinear effective theory are used to perform the threshold resummation of Sudakov logarithms for the deep-inelastic structure function F_2(x,Q^2) in the endpoin…

hep-ph2006★ 30 cited

Field Theory on Multi-throat Backgrounds

Giacomo Cacciapaglia, Csaba Csaki, Christophe Grojean +1

We consider extra dimensional field theory descriptions of backgrounds with N different throats where one of the extra dimensions in each throat is much larger than the others. Suc…

hep-ph2006★ 253 cited

The Minimal Set of Electroweak Precision Parameters

G. Cacciapaglia, C. Csáki, G. Marandella +1

We present a simple method for analyzing the impact of precision electroweak data above and below the Z-peak on flavour-conserving heavy new physics. We find that experiments have…

hep-ph2006★ 176 cited

Toward a NNLO calculation of the B-->X_s+gamma decay rate with a cut on photon energy: II. Two-loop result for the jet function

Thomas Becher, Matthias Neubert

The complete two-loop expression for the jet function J(p^2,mu) of soft-collinear effective theory is presented, including non-logarithmic terms. Combined with our previous calcula…

hep-ph2006★ 186 cited

Little Higgs Dark Matter

Andreas Birkedal, Andrew Noble, Maxim Perelstein +1

The introduction of T parity dramatically improves the consistency of Little Higgs models with precision electroweak data, and renders the lightest T-odd particle (LTP) stable. In…

hep-ph2006★ 2 cited

Automated Calculation Scheme for alpha^n Contributions of QED to Lepton g-2

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

This article reports an automated approach to the evaluation of higher-order terms of QED perturbation to anomalous magnetic moments of charged leptons by numerical means. We apply…

hep-ph2006★ 132 cited

Top Partners at the LHC: Spin and Mass Measurement

Patrick Meade, Matthew Reece

If one takes naturalness seriously and also assumes a weakly coupled extension of the Standard Model (SM) then there are predictions for phenomenology that can be inferred in a mod…