Conveners
Parallel Session 3: B - SUSY theory
- Patrick Fox (Fermilab)
Parallel Session 3: D - Tevatron anomalies
- There are no conveners in this block
Parallel Session 3: E - String pheno
- Joseph Marsano (University of Chicago)
Parallel Session 3: A - SUSY pheno
- Zackaria Chacko (University of Maryland, College Park)
Parallel Session 3: F - Collider exp and pheno
- V. Daniel Elvira (Fermilab)
Parallel Session 3: C - Alternatives
- Yang Bai (SLAC)
Prof.
Stephen Martin
(Northern Illinois University)
29/08/2011, 11:15
Prof.
Bhaskar Dutta
(Texas A&M University)
29/08/2011, 11:15
SUSY: phenomenology
Once SUSY is discovered, attempts will be made to establish the SUSY models from the cascade decays of squarks and gluinos. We have developed a model independent Bi-Event Subtraction Technique (BEST) as a method of modeling and subtraction of large portions of the combinatoric background which arises during reconstruction of particle decay chains at the LHC. The combinatoric background arises...
Ms
Karoline Köpp
(Florida State University)
29/08/2011, 11:15
Assuming that dark matter consists of an electroweak triplet and that the gauge couplings unify at a high scale, I will point out a robust phenomenological trends towards new colored states within LHC reach.
Specially, these new colored particles are either collider stable or alternatively decay promptly to final states that include Higgses. I will show that both cases are promising for the...
Dr
Louis Clavelli
(University of Alabama)
29/08/2011, 11:15
If the string landscape has any validity, the universe has in the past and should in the future make transitions to
other local (or absolute minima). A prime model for the physics of
a future universe is the minimal supersymmetric standard model or one
of its variations with all susy breaking terms put to zero. If we assume that this transition is accelerated in dense matter, some aspects...
Mr
Jasper Hasenkamp
(DESY)
29/08/2011, 11:35
We provide a simple transfer function that considers the impact of an early matter dominated era on the gravitational wave background and show that string theory can be tested by observations of the gravitational wave background from inflation. An outlook on the opportunity to test any nonstandard cosmology will be given.
Mr
Marcelo Vogel
(University of New Mexico)
29/08/2011, 11:35
SUSY: experiment
The production of chargino-neutralino with subsequent
leptonic decays is one of the most promising supersymmetry
(SUSY) signatures at the Tevatron proton-antiproton collider.
We present the most recent results on the search for this
three-lepton and missing-transverse-energy SUSY signature
using 5.8 fb-1 of data collected with the CDF II detector.
Prof.
Luis Anchordoqui
(University of Wisconsin Milwaukee)
29/08/2011, 11:35
The invariant mass distribution of dijets produced in association with W bosons, recently observed by the CDF Collaboration at Tevatron, reveals an excess in the dijet mass range 120-160 GeV/c^2, 4.1 \sigma beyond Standard Model expectations. We show that such an excess is a generic feature of low mass string theory, due to the production and decay of a hadrophillic Z', a singlet partner of...
Michael Park
(Rutgers, The State University of New Jersey)
29/08/2011, 11:45
In this project we revisit the canonical dual cascade decay signature typical of R-parity conserving supersymmetry models. The challenge presented with such decay topologies stems from the presence of a stable non-interacting particle at the end of each decay chain, resulting in an irrecoverable loss of kinematic information. We find that if the next-to-lightest-supersymmetric-particle (NLSP)...
Dr
Jean-Francois Fortin
(UCSD)
29/08/2011, 11:45
It is well known that in conformal theories the two- and three-point functions of a subset of the local operators-the conformal primaries-suffice, via the operator product expansion (OPE), to determine all local correlation functions of operators. It is less well known that, in superconformal theories, the OPE of superdescendants is generally undetermined from those of the superprimaries, and...
Mr
Fabian Ruehle
(BCTP and PI, Bonn University)
29/08/2011, 11:55
t is an ongoing effort in string phenomenology to construct MSSM-like string models. Heterotic string theory has proven especially useful in this context. The problem in constructing such models is that the geometry of the compactification spaces is very involved. In addition, in heterotic string theory, gauge bundles have to be constructed which lead to the Standard Model gauge groups in the...
Mr
Gordan Krnjaic
(Johns Hopkins, Fermilab)
29/08/2011, 11:55
We extend the standard model to include a weak-triplet and color-octet scalar. This `octo-triplet' field consists of three particles, two charged and one neutral, whose masses and renormalizable interactions depend only on two new parameters. The charged octo-triplet decay into a W boson and a gluon is suppressed by a loop factor and an accidental cancellation. Thus, the main decays of the...
Dr
Sudhir Kumar Vempati
(Centre for High Energy Physics, Indian Institute of Science, Bangalore)
29/08/2011, 12:10
n minimal supergravity (mSUGRA) or CMSSM, one of the main co-annihilating partners of the neutralino is the right handed stau, $\tilde{\tau}_R$. In the presence of flavor violation in the right handed sector, the co-annihilating partner would be a flavor mixed state. The flavor effect is two fold: (a) It changes the mass of the $\tilde{\tau}_{1}$, thus modifying the parameter space of the...
Dr
Jason Evans
(IPMU, The University of Tokyo)
29/08/2011, 12:10
We discuss gauge mediation models where the doublet messengers and Higgs doublets are allowed to mix through a “charged” coupling. The charged coupling replaces messenger parity as a means of suppressing flavor changing neutral currents without introducing any unwanted CP violation. As a result of this mixing between the Higgs doublets and the messengers, relatively large A-terms are generated...
Dr
Sung-Gi Kim
(Indiana University)
29/08/2011, 12:15
It is shown that Z' with couplings to electron and b-quark with a mass close to the mass of the Z-boson provides an excellent fit to AFBb, Ae obtained from the hadronic final states, and other observables relevant to b-quark final states around and above the Z-pole. In this talk, allowing Z' to have additional flavor violating couplings, I'll discuss its impact on muon g-2, lepton flavor...
Dr
Ioannis Katsanos
(University of Nebraska - Lincoln)
29/08/2011, 12:15
Mr
Alexis Kalogeropoulos
(IIHE / Vrije Universiteit Brussel)
29/08/2011, 12:15
The top-quark is the heaviest quark of the SM with a Yukawa coupling close to unity. Most of the new physics models which extend the SM predict a heavy particle spectrum which is accessible with the proton collisions at the LHC. It is therefore expected that the top-quark plays a dominant role in the search for effects of these new models.We will concentrate on the particular kinematic...
Masato Arai
(Czech Technical University in Prague)
29/08/2011, 12:15
We study the Bogomol'nyi-Prasad-Sommerfield wall solutions in massive K\"ahler nonlinear sigma models on SO(2N)/U(N) and Sp(N)/U(N) in three-dimensional spacetime. We show that SO(2N)/U(N) and Sp(N)/U(N) models have 2^{N-1} and 2^N discrete vacua, respectively. We explicitly construct the exact BPS multiwall solutions for N \le 3.
Dr
Eduardo Rojas
(Instituto de Física Universidad Nacional Autónoma de México)
29/08/2011, 12:35
Unified models
We revisit the CDF data on di-muon production to impose constraints on a large class of $Z'$ bosons
occurring in a variety of $E_6$ GUT based models. For this we suggest an alternative statistical analysis method
which ultimately allows to straightforwardly (i)~vary the gauge coupling strength, $g'$, of the underlying $U(1)'$;
(ii)~include interference effects with the $Z'$ amplitude (which...
Mr
David Yaylali
(University of Hawaii Department of Physics and Astronomy)
29/08/2011, 12:35
I will discuss the phenomenology of a class of models which couple new U(1) sectors to the Standard Model through triple gauge boson couplings. My primary focus will be on dimension 6 pseudovector couplings, which can arise in models incorporating anomaly cancellation mechanisms. We find the discovery reach for such a model, and find that the LHC can reach well into the TeV scale. I will...
Dr
Diego Mauricio Gallego Mahecha
(Universidad Pedagogica y Tecnologica de Colombia)
29/08/2011, 12:35
We study of the reliability of the Two-Step moduli
stabilization in the context of type-IIB string compactifications,
developing a compact manifold volume with exponential values. The
general arguments are understood trough the so called factorizable
models of N=1 SUGRA, where the decoupling between two field
sectors is easily understood despite the lack of a mass hierarchy.
It is shown...
Prof.
Fernando Martinez-Vidal
(IFIC, Universidad de Valencia-CSIC)
29/08/2011, 12:35
Intensity frontier: experiment
We report recent results of CP violation studies in B, charm and tau
decays from BABAR. These include determinations of the unitarity triangle angle gamma in B->D0K (D0->Kpipi0), CPV measurements in D+->Ks0h+h+h- and Ks0pi and in the tau decay tau->Ks0pinu.
Christian Schappacher
(Karlsruhe University),
Federico v.d. Pahlen
(IFCA (CSIC, Santander)),
Georg Weiglein
(DESY),
Heidi Rzehak
(Freiburg University), Dr
Sven Heinemeyer
(IFCA (CSIC, Santander))
29/08/2011, 12:35
SUSY: phenomenology
We evaluate the decay of SUSY particles in the complex MSSM (cMSSM) at the full one-loop level. A consistent calculation requires the simultaneous renormalization of the complete cMSSM. We present the renormalization, which is valid for practially the whole cMSSM parameter space, together with numerical results for Gluino, Stop and Chargino decays. Special emphasis is put on the production of...