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From Sven Kreiss

I am a PhD student in Physics at NYU working with Kyle Cranmer. I just returned to New York from a year at CERN. Feel free to contact me at sk@svenkreiss.com.

I write code for the statistical analysis tool RooStats which is part of CERN's Root Data Analysis tool. My ATLAS work is focused on the MET trigger, the H→ZZ*→4l analysis and the Higgs Combination.

March 5, 2013: New York Times - Chasing the Higgs

Read the full story at: www.nytimes.com

Science section title page
My part of the story

"Higgs Boson"-like Discovery

I am proud to say that I contributed to the ATLAS Higgs Combination and the H→ZZ*→4l analyses in addition to having worked on the statistics tools that were used by ATLAS and CMS. The claim is the discovery of a new particle in the search for the Higgs Boson. Whether it really is the Higgs Boson will be shown in future analyses.

Here is the presentation from July 4, 2012:
http://indico.cern.ch/conferenceDisplay.py?confId=197461

Signal strenth (μ) for the H→ZZ*→llll channel.
Λ(μ,mH) contours for H→ZZ*→llll and H→γγ.


What I do in Pictures

2D slice (θ*,Φ) through the five dimensional angular distribution function of a spin-2 resonance decaying to four leptons.
The ATLAS Collaboration. An update of combined measurements of the new Higgs-like boson with high mass resolution channels. ATLAS-CONF-2012-170. This plot was also mentioned here.
The ATLAS Collaboration. Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC. CERN-PH-EP-2012-218, Phys.Lett. B716 (2012) 1-29, http://arxiv.org/abs/arXiv:1207.7214. This plot was mentioned many times, for example here.
The ATLAS collaboration. Measurement of the top quark pair production cross-section with ATLAS in pp collisions at √s = 7 TeV. http://arxiv.org/abs/1012.1792


Selected Publications

On Inspire.

Selected Talks

  • 01/2013: H→ZZ*→4l Likelihood in ATLAS, Likelihoods for the LHC Searches, CERN, Conference Indico, PDF
  • 10/2012: Standard Model Higgs Combination and Properties, LHC Days 2012, Split, Croatia, ATL-PHYS-SLIDE-2012-609
  • 05/2012: RooStats: Statistical Tools for the LHC, CHEP 2012, New York, Slides