Conveners
QCD I
- Zack Sullivan (Illinois Institute of Technology)
Joshua Isaacson
(Michigan State University)
5/4/15, 2:00 PM
parallel talk
At the LHC there will be highly boosted W, Z, and Higgs bosons. When these particles decay via the hadronic channel, they may form a single fat jet. We present a perturbative QCD factorization formula for substructures of an energetic Higgs jet, taking the jet energy profile resulting from the $H\to b\bar b$ decay as an example. The formula is written as the convolution of a hard Higgs decay...
Ran Lu
5/4/15, 2:15 PM
parallel talk
We developed a concrete jet algorithm in 1411.3705 using the idea of identifying jets by maximizing certain jet functions. The idea can be generalized to more complex objects. I will show a simple extension of the jet function idea and its application in W-tagging.
Daniel Duffty
(Illinois Institute of Technology)
5/4/15, 2:30 PM
parallel talk
With the increase in beam energy at the LHC comes a drastic increase in the number of minimum bias events occuring alongside the physics events. These pileup events will contaminate jet energy of reconstructed jets, in addition to producing many fake jets composed of purely pileup energy. Our proposed solution to this problem is to implement a new jet algorithm that combines the speed and...
Keith Pedersen
(Illinois Institute of Technology)
5/4/15, 2:45 PM
parallel talk
Track based techniques for tagging bottom-quark jets lose efficiency
in the highly boosted regime. Many interesting channels require tagging
of at least one b-jet ($W^{\prime}\rightarrow tb$, $Z^{\prime}\rightarrow t\bar{t}/b\bar{b}$,
etc). We present a new method to tag b-jets with $p_{T}=\mathcal{O}\left(\mathrm{TeV}\right)$.
Torben Schell
(Heidelberg University)
5/4/15, 3:00 PM
parallel talk
The performance of top taggers, for example in resonance searches, can be significantly enhanced through an increased set of variables, with a special focus on final-state radiation. We study the production and the decay of a heavy gauge boson in the upcoming LHC run. For this purpose we use a new version of the HEPTopTagger which now includes an optimal choice of the size of the fat jet,...
Peter Schichtel
(ITP)
5/4/15, 3:15 PM
NLO & QCD
parallel talk
Facing ever higher energies at the LHC we are confronted with a huge amount of hadronic activity. However, the channels with many jets will also be among the most interesting ones. To either claim any discovery or proclaim yet another victory of the standard model we have to understand high multiplicity jet radiation precisely. Jet radiation in certain phase space regions shows particular...
