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Intae Yu Sungkyunkwan University (SKKU), Korea Dark Matter KISTI, Apr 22 nd 2016 Recent Highlights from CMS.

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Presentation on theme: "Intae Yu Sungkyunkwan University (SKKU), Korea Dark Matter KISTI, Apr 22 nd 2016 Recent Highlights from CMS."— Presentation transcript:

1 Intae Yu Sungkyunkwan University (SKKU), Korea Dark Matter Workshop @ KISTI, Apr 22 nd 2016 Recent Highlights from CMS

2 Dark Matter Workshop @ KISTI, Apr 22nd 2016 2 CMS Run 1 Legacy 479 Physics Papers published 88 Analyses in review (34 Analyses using 13 TeV data)

3 Dark Matter Workshop @ KISTI, Apr 22nd 2016 3 CMS Run 1 Legacy Higgs Discovery in 2012 SM Cross Sections

4 Dark Matter Workshop @ KISTI, Apr 22nd 2016 4 CMS Run 1 Legacy SUSY Searches: gluino (~1.3 TeV), stop/sbottom (~700 GeV)

5 Dark Matter Workshop @ KISTI, Apr 22nd 2016 5 CMS Run 1 Legacy Exotica Searches: no significant excess

6 Dark Matter Workshop @ KISTI, Apr 22nd 2016 6 CMS Long Shutdown (2013~2014) Detector Upgrades: Muon, HCAL, DAQ, Beampipe,…

7 Dark Matter Workshop @ KISTI, Apr 22nd 2016 7 2015 CMS Run Summary Initial problems in cryogenic system of the CMS magnet

8 Dark Matter Workshop @ KISTI, Apr 22nd 2016 8 Dimuon Mass Spectrum from 2015 Data

9 Dark Matter Workshop @ KISTI, Apr 22nd 2016 9 CMS Results @ 13 TeV

10 Dark Matter Workshop @ KISTI, Apr 22nd 2016 10 SM Measurements: Underlying Events Underlying events are important backgrounds in many analyses Data shows reasonably good agreement with tuned MC

11 Dark Matter Workshop @ KISTI, Apr 22nd 2016 11 SM Measurements: Top Underlying Events Understand all aspects of event modeling in ttbar environment Measure charged particle activity relative to the flight direction of ttbar

12 Dark Matter Workshop @ KISTI, Apr 22nd 2016 12 SM Measurements: Inclusive Jets Measure inclusive jet cross section as a function of jet P T and eta Data shows a good agreement with predictions

13 Dark Matter Workshop @ KISTI, Apr 22nd 2016 13 SM Measurements: B Meson Production Measure B cross section as a function of P T and y Good agreement with predictions up to P T ~100 GeV

14 Dark Matter Workshop @ KISTI, Apr 22nd 2016 14 SM Measurements: W/Z Production Measure W and Z cross sections and ratios W/Z, W+/W- New measurement on Z+jets differential cross section

15 Dark Matter Workshop @ KISTI, Apr 22nd 2016 15 SM Measurements: WW and WZ Production Test of EW interactions and important backgrounds to Higgs measurements

16 Dark Matter Workshop @ KISTI, Apr 22nd 2016 16 SM Measurements: Top Production Data agrees well with theoretical predictions

17 Dark Matter Workshop @ KISTI, Apr 22nd 2016 17 SM Measurements: Status

18 Dark Matter Workshop @ KISTI, Apr 22nd 2016 18 Higgs First results from 13 TeV data Many analyses in progress Updated results expected in 2016 No excess in 13 TeV data

19 Dark Matter Workshop @ KISTI, Apr 22nd 2016 19 Run I Bumps : Diboson Resonances Run 1: Diboson (WW/WZ/ZZ) excess near 2 TeV significance ~ 2σ No excess in 13 TeV data

20 Dark Matter Workshop @ KISTI, Apr 22nd 2016 20 New Physics Searches : Heavy Stable Particles Signature: High P T tracks, dE/dX, TOF Gluino mass > 1.6 TeV (1.3 TeV in Run 1)

21 Dark Matter Workshop @ KISTI, Apr 22nd 2016 21 New Physics Searches : Top Quark Partners with q=5e/3 Search for X 5/3 → tW in composite Higgs models Signature: same-sign dilepton and lepton+jets

22 Dark Matter Workshop @ KISTI, Apr 22nd 2016 22 New Physics Searches : W’ Search for W’→ lνin lepton + MET M W’ > 4.4 TeV Search for W’→ tb in lepton + jets M W’ > 2.38 TeV

23 Dark Matter Workshop @ KISTI, Apr 22nd 2016 23 New Physics Searches : Black Holes Search for semi-classical and quantum black holes Model-independent search using S T Quantum BH : M > 8TeV Semi-classical BH: M > 8.7 TeV

24 Dark Matter Workshop @ KISTI, Apr 22nd 2016 24 New Physics Searches : Dijets Generic Search for bumps in dijet mass distribution

25 Dark Matter Workshop @ KISTI, Apr 22nd 2016 25 New Physics Searches : Dileptons Search for bumps in the mass spectra of electron or muon pairs Data consistent with SM

26 Dark Matter Workshop @ KISTI, Apr 22nd 2016 26 New Physics Searches : Diphotons Search for RS gravitons in the mass spectra of diphotons Two categories: Barrel-Barrel (EBEB), Barrel-Endcap (EBEE) Assumption on coupling κ

27 Dark Matter Workshop @ KISTI, Apr 22nd 2016 27 New Physics Searches : Diphotons Local p-value : 2.6σ@760 GeV for κ=0.01 (ATLAS: 3.6σ@ 750 GeV) Global p-value < 1.2 σ (ATLAS: 2.0σ)

28 Dark Matter Workshop @ KISTI, Apr 22nd 2016 28 2016 Plan Started 2016 LHC Run without any major problem Expect 5~10 fb -1 before ICHEP

29 Dark Matter Workshop @ KISTI, Apr 22nd 2016 29 Summary Many interesting results from 2015 Run Good CMS detector performance @ 25ns SM measurements consistent with predictions at new energy New physics searches yielding improved limits An interesting excess in diphoton mass distribution around 750 GeV 5~10 fb -1 expected before the summer → many updated results including the diphoton excess coming


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