### Conveners

#### Parallel Session 2: B - SUSY theory

- Gerben Stavenga ()

#### Parallel Session 2: E - String pheno

- Joseph Lykken (Fermilab)

#### Parallel Session 2: D - SUSY theory

- Patrick Fox (Fermilab)

#### Parallel Session 2: A - Dark matter

- Xerxes Tata (University of Hawaii)

#### Parallel Session 2: F - Models

- Wolfgang Altmannshofer (Fermilab)

#### Parallel Session 2: C - SUSY and unification

- Carlos Wagner ()

Dr
James Gainer
(Argonne National Laboratory/ Northwestern University)

8/28/11, 2:30 PM

Supersymmetric SO(10) Grand Unified Theories with Yukawa unification represent an appealing possibility for physics beyond the Standard Model. However Yukawa unification is made difficult by large threshold corrections to the bottom mass. Generally one is led to consider models where the sfermion masses are large in order to suppress these threshhold corrections. Here we present another...

Ana Rodriguez
(UAM Madrid),
Maria Herrero
(UAM Madrid),
Siannah Penaranda
(University of Zaragoza), Dr
Sven Heinemeyer
(IFCA (CSIC, Santander))

8/28/11, 2:30 PM

Higgs: phenomenology

We present a full diagrammatic computation of the one-loop corrections from the neutrino/sneutrino sector to the renormalized neutral CP-even Higgs boson self-energies and the
lightest Higgs boson mass, M_h, within the context of the so-called
MSSM-seesaw scenario. This consists of the Minimal Supersymmetric
Standard Model with the addition of massive
right handed Majorana neutrinos and...

Xiaoyi Cui
(Department of Physics, University of Minnesota)

8/28/11, 2:50 PM

I will talk about the renormalization of 2 dimensional N=(0,2) heterotic CP(N-1) sigma models. I will discuss the one loop result, and various limiting cases that allow us to extend the analysis to all loop order. An interesting result is a version of D-term nonrenormalization theorem for N=(0,2) linear models, which might shed light on our understanding of the nonrenormalization theorems for...

Dr
David Curtin
(C.N. Yang Institute for Theoretical Physics, Stony Brook)

8/28/11, 2:55 PM

After briefly reviewing the insights of Seiberg and Witten (1994) which provide a low-energy description of N = 2 SUSY theories featuring massless monopoles, we investigate N = 1 supersymmetric gauge theories where monopole condensation triggers supersymmetry breaking in a metastable vacuum. The low-energy effective theory is an O’Raifeartaigh-like model of the kind investigated recently by...

Dr
Adam Ritz
(University of Victoria)

8/28/11, 3:00 PM

I'll discuss the sensitivity of neutrino experiments at the luminosity frontier to light MeV-GeV scale dark matter. A thermal relic abundance implies annihilation channels via light mediators, providing a portal
for access to the dark matter state in colliders or fixed targets. In particular, this framework endows the neutrino beams produced at a fixed target with an additional `dark matter...

Ms
JiJi Fan
(Princeton University)

8/28/11, 3:00 PM

We present a broad class of supersymmetric models that preserve R-parity but lack missing energy signatures. These models have new light particles with weak-scale supersymmetric masses that feel SUSY breaking only through couplings to the MSSM. The simplest scenario has low-scale SUSY breaking, with nearly-supersymmetric NLSPs leading to missing E_T only from soft gravitinos. We emphasize that...

Dr
Jong-Phil Lee
(Yonsei Univ.)

8/28/11, 3:10 PM

In the background of unparticle-enhanced black hole geometry, we provide the quasinormal modes of scalar, vector, and
Dirac particles around it.
Ungravity by tensor unparticles contributes positively to the Newtonian gravity and black holes can be formed at the LHC
without any extra dimensions.
In the ungravity-dominant regime, the gravity looks much like that of the Schwarzschild geometry...

Yuhsin Tsai
(Cornell/Fermilab)

8/28/11, 3:25 PM

Dark matter: experiment

With the ever increasing amount of luminosity recorded, the LHC is capable of providing very strong constraints on dark matter properties, in a model independent fashion. Using the recent LHC mono-jet results, we set limits on the couplings of dark matter to quarks, and hence on the rate for direct detection of dark matter. We also discuss future bounds from mono-jet and mono-photon searches...

Tonnis Ter Veldhuis
(Macalester College)

8/28/11, 3:25 PM

The electroweak symmetry is nonlinearly realized in an extension of the minimal supersymmetric standard model (MSSM) through an additional pair of constrained Higgs doublet superfields. The superpotential couplings of this constrained Higgs doublet pair to the MSSM Higgs doublet pair catalyze their vacuum expectation values. The Higgs and Higgsino-gaugino mass spectrum is presented for several...

Mr
Debasish Borah
(Indian Institute of Technology Bombay)

8/28/11, 3:30 PM

We study the Gauge coupling unification as well as fermion mass universality at the GUT scale within the framework of Supersymmetric Left-Right (SUSYLR) models. Depending on the Higgs content, all these models have different mechanisms of generating tiny neutrino masses. We discuss both R-parity conserving as well as R-parity violating SUSYLR models. We also address the issue of domain wall...

Dr
Norimi Yokozaki
(The University of Tokyo)

8/28/11, 3:30 PM

SUSY CP problem in the gauge mediation supersymmetry breaking model is reconsidered. We pay particular attention to two sources of CP violating phases whose effects were not seriously studied before; one is the effect of the breaking of the GUT relation among the gaugino masses due to the field responsible for the GUT symmetry breaking, and the other is the supergravity effect on the...

Dr
Robert Schabinger
(Universidad Autonoma de Madrid IFT/CSIC)

8/28/11, 3:35 PM

In this talk, new all-orders-in-epsilon results for planar scattering amplitudes in N = 4 super Yang-Mills theory will be presented, both in component form and in N = 4 on shell superspace. The focus will be on the one-loop six-point case because this is where the first non-trivial examples arise. As an application, striking relations between open superstring amplitudes and one-loop N = 4...

Mr
Simon Knapen Knapen
(Rutgers, the state university of New Jersey)

8/28/11, 3:50 PM

A conformally invariant hidden sector is considered, with a scalar operator O of low dimension that couples to the electroweak gauge bosons of the standard model, via terms such as F_μν F_μν O. By examining single photon production at LEP, we bound the strength of these interactions. We apply our results, along with those of Delgado and Strassler [A. Delgado and M. J. Strassler, Phys. Rev. D...

Francesco D'Eramo
(MIT)

8/28/11, 3:50 PM

SUSY: formal aspects, strings

The full machinery of supergravity (SUGRA) is required to fully understand many SUSY models. For the purpose of understanding phenomenology at colliders and in cosmology, the main concern is to ascertain the effects of SUGRA on the vacuum structure and particle spectrum. Practical calculations often require cumbersome manipulations of component field terms involving the full gravity multiplet....

Ms
Archana Anandakrishnan
(The Ohio State University)

8/28/11, 3:50 PM

We calculate the weak scale MSSM spectrum starting from a heterotic string theory compactified on an anisotropic orbifold. Supersymmetry breaking is mediated by vector-like exotics that arise naturally in heterotic string theories. The messengers that mediate SUSY breaking come in incomplete GUT multiplets and give rise to non-universal gaugino masses at the GUT scale. Models with...