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Advancements in Physics Studies: Update on FTK Meeting Analytics

Dive into the latest developments in physics studies with insights from the FTK Meeting on event selection algorithms, signal selection results, background analysis, and more. Learn about new findings on tagging efficiency, reconstructed masses, and the impact of different parameters on event weighting. Explore questions on heavy flavor generation, triggers, and jet clustering across boundary lines to enhance your understanding of physics simulations. Stay informed on the ongoing research in the field to stay ahead of the curve!

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Advancements in Physics Studies: Update on FTK Meeting Analytics

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  1. Physics Studies Update FTK Meeting 01/26/06 Erik Brubaker U of Chicago

  2. Hhh4b analysis • Two algorithms for event selection in ATL-PHYS-97-104. FTK Meeting

  3. Signal selection results • Differences • 9 years ago… • B-tagging efficiency • mh = 90 • What is s? FTK Meeting

  4. Reconstructed masses • mh =130 GeV • mH =300 GeV. FTK Meeting

  5. Background selection 97 study 4 tags eff: 10-3—2*10-5, depending on real b content Need to weight events by tagging probability… Is SHERPA really generating heavy flavor? FTK Meeting

  6. Background Selection (weighted evts) eb = 0.5, ec = 1./10.9, eu = 1./231. eb = 0.6, ec = 0.1, eu = 0.01 etot=1e-9  360 ev/fb-1 FTK Meeting

  7. When revisiting the LVL1 parametrizations h=3.2 • Understand high-h triggers. • What is range of central jet trigger? • Can jets be clustered across central/forward boundary? (If not, is there a “dead spot” or a shoulder in response?) • Use “unfluctuated” ATLFAST jets as input. • Basically a truth jet of clustered hadrons. • Extend ET range past 300 GeV. • Parametrize 4x4 ET as well as 8x8. • Investigate h dependence of params. • Investigate response of g,q,c,b? ATLFAST pT LVL1 ET FTK Meeting

  8. SHERPA questions • Are heavy quarks automatically included in ME? • What is recommended treatment or settings for MPI/underlying event at LHC? • Is there a good document that explains ycut well? • How does choice of ycut affect quantities that use low-pT jets, like MET? FTK Meeting

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