Page 1

Martin Pohl

DEPARTEMENT DE PHYSIQUE NUCLEAIRE ET CORPUSCULAIRE

Journée de reflexion du DPNC Conclusions 2012

Martin Pohl

Page 2

Martin Pohl

DEPARTEMENT DE PHYSIQUE NUCLEAIRE ET CORPUSCULAIRE

High energy• LHC and ATLAS

– Impressive performance: collider, experiment, computing– Detector well understood: jets, leptons, missing energy– Analysis closely follows data taking, 3-4 thesis per year– Top physics: SM but not so standard– Papers 50% on searches: SUSY, WIMPs and exotics not found up to

~TeV range (but would have been if they existed!)– Higgs WW, ZZ, γγ: M < 135 GeV, new results for ICHEP– If Higgs exists: measure properties/couplings, regularization of VV

scattering– If light Higgs does not exists: what keeps VV scattering finite?– Extend mass range by high luminosity 30%/3000 fb-1

• Upgrades– Phase 0: IBL– Phase 1: pile-up ~50, MUCH, LV1 calo trigger, FTK, AFP 2018– Phase 2: new inner detector, pixel, short+long strips 2021/22

Page 3

Martin Pohl

DEPARTEMENT DE PHYSIQUE NUCLEAIRE ET CORPUSCULAIRE

DPNC:

IBL

AFP, FTK?

?

ATLAS@LHC

or LEP3 or CLIC?

Page 4

Martin Pohl

DEPARTEMENT DE PHYSIQUE NUCLEAIRE ET CORPUSCULAIRE

High precision• Current experiment:

– Muon lifetime– FAST@PSI – Final results this summer

• Future project:– Lepton flavor violation – MU3E@PSI

FAST

Page 5

Martin Pohl

DEPARTEMENT DE PHYSIQUE NUCLEAIRE ET CORPUSCULAIRE

Neutrinos• Oscillations probe obscure sector of SM: flavor

– Neutrinos have mass and they oscillate, νe disappear from νe beam and appear in νμ beam, ντ appear in νμ beam

– Attention: total cross section a few fb! Single events!– T2K is leading long baseline experiment, final statistics in 2020– Maki-Nakagawa-Sakata matrix in leptonic weak charged current! – Θ13 large, good news for mass hierarchy; Θ23 not maximal?

– « Normal » or « inverted » hierarchy? Mass scale? – Dirac or Majorana or both? Sterile heavy νR, anti-νL? CP violation?

• Future beams and experiments:– Daya Bay II (20 kt)– Pingu for IceCube, cheap and quick option?– CN2PY + LAGUNA/LBNO (20 kt)?– INO (50 kt), Hyper-K (1 Mt), LBNE, NF2PY– CP phase not for tomorrow!

Page 6

Martin Pohl

DEPARTEMENT DE PHYSIQUE NUCLEAIRE ET CORPUSCULAIRE

CAP Genève Space Projects• Data taking phase:

• Integral: data center at ISDC ESA• AMS on ISS: large UniGe contribution NASA• Planck: no Swiss hardware, analysis ESA

• Construction phase:• POLAR: GRB polarimeter for Tiangong 2, CAP + PSI GESSA• ASTRO-H: filter wheel mechanism, CAP + RUAG

JAXA• Assessment and definition phase:

• EUCLID: selected M2, shutter design ISDC ESA • JEM-EUSO on ISS: LIDAR actuator JAXA• LOFT: M3 candidate, Large Area Detector, CAP + CSEM ESA• DAMPE GESSA

• Conceptual design phase:• HERD (next step beyond AMS and FERMI) GESSA

All phases, all major players

Page 7

Martin Pohl

DEPARTEMENT DE PHYSIQUE NUCLEAIRE ET CORPUSCULAIRE

Ground-based and underground AP expt’s• Data taking phase:

• IceCube: atmospheric astrophysical cosmological neutrinos• Flares and point sources: new results soon• Upgrades: Pingu, ARA

• Multi-messenger astrophysics:• Promissing paradigm: attack sources by all means (γ, CR, ν,

gravitational waves)• Photons of multiple wavelengths: Source properties, acceleration

mechanisms • Photons, neutrinos: Source properties, leptonic vs hadronic

• Preparatory phase:• Cherenkov Telescope Array, ATLAS-size project, wide physics scope• FACT camera prototype (with ETHZ)• UniGe proposal: Davis-Cotton SST with FACT-type camera

Page 8

Martin Pohl

DEPARTEMENT DE PHYSIQUE NUCLEAIRE ET CORPUSCULAIRE

General observations• I share the excitement about initial LHC and ATLAS

performance and results.• I do not share the premature disappointment with the

lack of immediate spectacular discoveries.• We have only scratched the surface of LHC physics!• The « weight » of different pillars inside particle physics

in « public opinion » is subject to large short term shifts.• Do not listen to this, our time scale is 10y!• There is no more grace period for esperiments, where

statistical error hides systematics. Its all about systematics, stupid!

• In general, our Road Map is still right! We can continue to use it to orient us.

Page 9

Martin Pohl

DEPARTEMENT DE PHYSIQUE NUCLEAIRE ET CORPUSCULAIRE

Conclusions• DPNC is:

– Innovative power in detector design, construction and data analysis;– Perseverance in getting at the physics;– Proliferation of projects for the future.

• My opinion: we should not reduce our ambitions easily!• How can we live up to our ambitions?

– We need a perspective for growth in personnel.– We need to maintain and develop technical groups and their skills.– NCCR Universe will give this perspective, if approved.– In addition we need investment funds comparable to the initial ATLAS

investment. Existing sources are insufficient.– We must use all imaginable sources: local, federal, European.

• If we want any or all of this to be successful, we need the general public to support us. Reach out!

Page 10

Martin Pohl

DEPARTEMENT DE PHYSIQUE NUCLEAIRE ET CORPUSCULAIRE

Thanks• Thanks to all speakers for their high quality

presentations.• Thanks to all participants for lively discussions.• Thanks to Teresa and Xin for organising the scientific

contents.• Thanks to Catherine and Liliane for organising the

venue.

• Thanks to Mother Nature for providing us with unlimited mysteries to study.