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The LPC at Fermilab and the Higgs discoveryprinted by • LPC experts contributed to the performance...

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printed by www.postersession.com LPC experts contributed to the performance of key physics ingredients such as tracking and vertexing, triggering, jets, b-tagging, muons, electrons, taus, photons, and missing energy LPC contributions to LHC physics The LHC Physics Center at FNAL The LPC at Fermilab and the Higgs discovery http://lpc.fnal.gov User facilities and activities at the LPC More than 350 users and 100 residents LPC users directly contributed to 50% of ~200 CMS publications The LPC is a way to attain critical mass for 50 U.S. university groups The LPC is a nexus for diverse synergistic contributions across a broad range of R&D areas Includes facilities on-site for detector design and fabrication, software development and physics data analysis The Remote Operations Center enables US-based physicists to participate in real-time as members of the detector operations shift crew. The LPC has transformed the way the CMS collaboration educates young students and post-docs CMS Data Analysis School established at the LPC for new collaborators The LPC hosts distinguished visiting scientists and fosters interactions with off-site collaborators and theorists through seminars, workshops, and hands-on tutorials. The LPC is the local (US) center of excellence for CMS physics The LPC serves as a critical link for remote physicists to participate directly in the CMS experiment effectively, economically and transparently. [pb] tot σ Production Cross Section, -1 10 1 10 2 10 3 10 4 10 5 10 CMS July 2013 W 1j 2j 3j 4j Z 1j 2j 3j 4j > 30 GeV jet T E | < 2.4 jet η | γ W > 15 GeV γ T E ,l) > 0.7 γ R( Δ γ Z WW+WZ WW WZ ZZ γ WV -1 36, 19 pb -1 5.0 fb -1 5.0 fb -1 4.9 fb -1 3.5 fb -1 4.9 fb -1 19.6 fb -1 19.3 fb JHEP 10 132 (2011) JHEP 01 010 (2012) SMP-12-011 (W/Z 8 TeV) EWK-11-009 EPJC C13 2283 (2013) (WV) SMP-12-006 (WZ), 12-005 (WW7), 13-005(ZZ8) JHEP 1301 063 (2013) (ZZ7), PLB 721 190 (2013) (WW8) SMP-013-009 CMS 95%CL limit 7 TeV CMS measurement 8 TeV CMS measurement 7 TeV Theory prediction 8 TeV Theory prediction The LPC is significantly involved in all major areas of physics at the LHC Across all major areas of physics: Precision electroweak measurements QCD measurements Searches for new physics phenomena Searches for supersymmetric particles Top quark physics Measurements related to heavy quark physics Heavy ion physics Studies of future collider reach and capability Standard model benchmark measurements by CMS LPC contributions to the Higgs discovery SM σ / σ Best fit -1 0 1 2 3 bb H τ τ H WW H ZZ H γ γ H CMS -1 = 8 TeV, L = 5.3 fb s -1 = 7 TeV, L = 5.1 fb s = 125.5 GeV H m (GeV) H m 110 115 120 125 130 135 140 145 Local p-value -12 10 -10 10 -8 10 -6 10 -4 10 -2 10 1 σ 1 σ 2 σ 3 σ 4 σ 5 σ 6 σ 7 Combined obs. Exp. for SM H γ γ H ZZ H WW H τ τ H bb H CMS -1 = 8 TeV, L = 5.3 fb s -1 = 7 TeV, L = 5.1 fb s Members from the LPC played an important role in the data analysis for the main Higgs search channels H ZZ 4l “the golden channel”, versatile mode with clean, distinctive signature H WW lνlν “the workhorse channel” sensitive over a large search mass range H bb and H ττ challenging search modes probing couplings of the Higgs to fermions Nearly 700 CMS collaborators use the Fermilab LPC computing cluster with 22 Pb of storage and 3300 local and 6400 global nodes for data processing and analysis (pb) σ 95% CL upper limit on -3 10 -2 10 -1 10 1 10 (GeV) gluino m 400 600 800 1000 1200 1400 (GeV) LSP m 0 200 400 600 800 1000 1200 exp. σ 1 ± Expected Limit theory σ 1 ± NLO+NLL σ = 8 TeV s , -1 CMS, 11.7 fb ) g ~ )>>m( q ~ ; m( 1 0 χ q q g ~ , g ~ g ~ pp supersymmetry search result -2ln( / ) -30 -20 -10 0 10 20 30 Pseudoexperiments 0 500 1000 1500 2000 2500 3000 0+ 0- Observed CMS -1 = 7 (8) TeV, L = 5.1 (12.2) fb s + 0 - 0 L L H γγ benchmark channel with good mass resolution 2 events / 10 GeV/c 0 50 100 150 200 250 300 350 data =125 GeV H m H125 W+jets VV Top * γ Z/ WW syst. stat. CMS Preliminary -1 = 8 TeV, L = 19.5 fb s -1 = 7 TeV, L = 4.9 fb s μ 0-jet e ] 2 [GeV/c ll m 0 100 200 300 data / MC 0 0.5 1 1.5 2 2.5 Higgs properties to understand the nature of the Higgs
Transcript
Page 1: The LPC at Fermilab and the Higgs discoveryprinted by • LPC experts contributed to the performance of key physics ingredients such as tracking and vertexing, triggering, jets, b-tagging,

printed by

www.postersession.com

• LPC experts contributed to the performance of key physics ingredients such as tracking and vertexing, triggering, jets, b-tagging, muons,

electrons, taus, photons, and missing energy

LPC contributions to LHC physics

The LHC Physics Center at FNAL

The LPC at Fermilab and the Higgs discoveryhttp://lpc.fnal.gov

User facilities and activities at the LPC

•More than 350 users and 100 residents•LPC users directly contributed to 50% of ~200 CMS publicationsThe LPC is a way to attain critical mass for 50 U.S. university groups

The LPC is a nexus for diverse synergistic contributions across a broad range of R&D areas •Includes facilities on-site for detector design and fabrication, software development and physics data analysis•The Remote Operations Center enables US-based physicists to participate in real-time as members of the detector operations shift crew.

•The LPC has transformed the way the CMS collaboration educates young students and post-docs•CMS Data Analysis School established at the LPC for new collaborators

•The LPC hosts distinguished visiting scientists and fosters interactions with off-site collaborators and theorists through seminars, workshops, and hands-on tutorials.

• The LPC is the local (US) center of excellence for CMS physics

•The LPC serves as a critical link for remote physicists to participate directly in the CMS experiment effectively, economically and

transparently.

[p

b]to

Prod

uctio

n C

ross

Sec

tion,

-110

1

10

210

310

410

510

CMSJuly 2013

W

1j≥

2j≥

3j≥

4j≥

Z

1j≥

2j≥

3j≥

4j≥

> 30 GeV jetTE

| < 2.4 jetη|

γW

> 15 GeVγ TE

,l) > 0.7γR(Δ

γZ WW+WZ WW

WZZZ

γWV

-136, 19 pb -15.0 fb -15.0 fb-14.9 fb-13.5 fb

-14.9 fb-119.6 fb

-119.3 fb

JHEP 10 132 (2011)JHEP 01 010 (2012)

SMP-12-011 (W/Z 8 TeV)

EWK-11-009 EPJC C13 2283 (2013) (WV)SMP-12-006 (WZ), 12-005 (WW7), 13-005(ZZ8)

JHEP 1301 063 (2013) (ZZ7), PLB 721 190 (2013) (WW8)

SMP-013-009

CMS 95%CL limit

7 TeV CMS measurement8 TeV CMS measurement 7 TeV Theory prediction8 TeV Theory prediction

The LPC is significantly involved in all major areas of physics at the LHC

Across all major areas of physics:Precision electroweak measurementsQCD measurementsSearches for new physics phenomenaSearches for supersymmetric particlesTop quark physicsMeasurements related to heavy quark physicsHeavy ion physicsStudies of future collider reach and capability

• Standard model benchmark measurements by CMS

LPC contributions to the Higgs discovery

SMσ/σBest fit -1 0 1 2 3

bb→H

ττ →H

WW→H

ZZ→H

γγ →H

CMS -1 = 8 TeV, L = 5.3 fbs -1 = 7 TeV, L = 5.1 fbs

= 125.5 GeVH m

(GeV)Hm110 115 120 125 130 135 140 145

Loca

l p-v

alue

-1210

-1010

-810

-610

-410

-210

1σ1σ2

σ3

σ4

σ5

σ6

σ7

Combined obs.Exp. for SM H

γγ →H ZZ→H WW→H ττ →H

bb→H

Combined obs.Exp. for SM H

γγ →H ZZ→H WW→H ττ →H

bb→H

CMS -1 = 8 TeV, L = 5.3 fbs -1 = 7 TeV, L = 5.1 fbs

• Members from the LPC played an important role in the data analysis for the main Higgs search channels

• H → ZZ → 4l• “the golden channel”,• versatile mode with clean,

distinctive signature

• H → WW → lνlν•“the workhorse channel”• sensitive over a large

search mass range•

• H → bb and H → ττ• challenging search modes probing

couplings of the Higgs to fermions

•Nearly 700 CMS collaborators use the Fermilab LPC computing cluster with 22 Pb of storage and 3300 local and 6400 global nodes for data processing and analysis

(pb)

σ95

% C

L up

per l

imit

on

-310

-210

-110

1

10

(GeV)gluinom400 600 800 1000 1200 1400

(GeV

)LS

Pm

0

200

400

600

800

1000

1200

exp.σ1 ±Expected Limit theoryσ1 ± NLO+NLLσ

= 8 TeVs, -1CMS, 11.7 fb

)g~)>>m(q~; m(10χ∼ q q → g~, g~ g~ →pp

supersymmetry search result

-2ln( / ) -30 -20 -10 0 10 20 30

Ps

eu

do

ex

pe

rim

en

ts

0

500

1000

1500

2000

2500

3000

0+

0-

Observed

CMS -1

= 7 (8) TeV, L = 5.1 (12.2) fbs

+0

-0

L L

• H → γγ• benchmark channel with

good mass resolution

]2 [GeV/cllm0 50 100 150 200 250 300

2ev

ents

/ 10

GeV

/c

0

50

100

150

200

250

300

350 data =125 GeVH m H125 W+jets VV Top

*γ Z/ WWsyst.⊕ stat.

CMS Preliminary-1 = 8 TeV, L = 19.5 fbs -1 = 7 TeV, L = 4.9 fbs

µ0-jet e

]2 [GeV/cllm0 100 200 300

data

/ M

C

00.5

11.5

22.5

• Higgs properties • to understand the

nature of the Higgs

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