20-24 May 2013
Bonn
Europe/Berlin timezone
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Parallel Session on LHC

Place

Location: Bonn
Room: Big Lecture Hall Mathematics
Date: 21 May 14:00 - 6:00 PM

Conveners

    • Tattersall, Jamie
    • Tattersall, Jamie

Timetable | Contribution List

Displaying 9 contributions out of 9
We analyze the impact of effective axial-vector coupling of the gluon on spin polarization observables in $t\bar{t}$ pair production at the LHC (arXiv:1212.3272, to appear on PRD). Working at leading order in QCD, we compute the $t\bar{t}$ spin-correlation and left-right spin asymmetry coefficients in the helicity basis in the laboratory frame as functions of the new physics scale $\Lambda$ associ ... More
Presented by Antonio RACIOPPI on 21/5/2013 at 14:20
I will discuss the 8 TeV LHC reach on pair produced heavy flavored di-jet resonances. Motivated by theories of R-parity violation in supersymmetry I will concentrate on a final state with two b-jets and two light jets. I will exploit b-tagging to reject the background and discuss its importance at the trigger level to probe light stops. I will also present kinematical selections that can be used t ... More
Presented by Riccardo TORRE on 21/5/2013 at 12:00
Recent ATLAS and CMS measurements show a slight excess in the WW cross section measurement. While still consistent with the Standard Model within 1-2 sigma, the excess could be also a first hint of physics beyond the Standard Model. We argue that this effect could be attributed to the production of scalar top quarks within supersymmetric models. The stops of mass ~200 GeV has the right cross secti ... More
Presented by Krzysztof ROLBIECKI on 21/5/2013 at 12:30
The energies attained by cosmic rays offer an opportunity for probing the mechanism for dynamical electroweak symmetry breaking directly. In this talk we will discuss which signals are expected to be observed in air showers in the presence of such mechanisms.
Presented by Dennis D. DIETRICH on 21/5/2013 at 15:40
This talk will focus on the consequences of electroweak symmetry breaking by strong dynamics, assuming the existence of a light composite scalar appearing as a pseudo- Goldstone boson of some global symmetry of the new strongly interacting sector. In such a scenario, the composite scalar has properties very similar to the Standard Model Higgs, but the existence of additional resonances with differ ... More
Presented by Anna KAMINSKA on 21/5/2013 at 14:00
Finding signs of new physics and even knowing the underlying theory does not automatically come along with the knowledge of the model parameters. In most new physics theories the relation mapping the measured observables onto the model parameters is unknown. In this talk the ability of a neural network is demonstrated to find this unknown relation in parameter space. As example different reference ... More
Presented by Nicki BORNHAUSER on 21/5/2013 at 15:20
The discovery of the Higgs boson at 126 GeV seems to imply masses in the multi-TeV regime for the simplest constrained SUSY models. Such a heavy supersymmetric spectrum is somewhat at odds with the naturalness criterion. Moreover, in such a framework it is impossible to obtain the correct value of $(g-2)_\mu$. By construction, SUSY models with light sleptons and light third generation squarks do n ... More
Presented by Enrico Maria SESSOLO on 21/5/2013 at 14:40
Natural composite Higgs models predict light top and bottom partners, vector-like quarks that mix strongly with the top and bottom quarks. We describe the strategy to discover them and the Large Hadron Collider and their use to explore further aspects of models of strong electroweak symmetry breaking.
Presented by Jose SANTIAGO on 21/5/2013 at 13:00
If supersymmetry is the solution to the Higgs mass hierarchy problem, this requires the existence of light stops and sbottoms. The current reach of the experimental searches for stops and sbottoms at the LHC is however still limited. In this work, we exploit the information about top polarization in sbottom (and stop) decays into tops, in order to gain better control over the signals arising from ... More
Presented by Suchita KULKARNI on 21/5/2013 at 15:00
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