The SM works ATLAS - - PowerPoint PPT Presentation

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The SM works ATLAS - - PowerPoint PPT Presentation

Jan 21, 2023 279 likes •1.04k views

I N C LOSING Felix Yu JGU Mainz EFTs for Collider Physics, Flavor Phenomena and EWSB November 13, 2014 I N C LOSING O UR S TORY T HUS F AR Felix Yu JGU Mainz EFTs for Collider Physics, Flavor Phenomena and EWSB November 13, 2014 The SM

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IN CLOSING

EFTs for Collider Physics, Flavor Phenomena and EWSB November 13, 2014

Felix Yu JGU Mainz

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IN CLOSING OUR STORY THUS FAR

EFTs for Collider Physics, Flavor Phenomena and EWSB November 13, 2014

Felix Yu JGU Mainz

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The SM works

3 ATLAS https://twiki.cern.ch/twiki/bin/view/AtlasPublic/StandardModelPublicResults Also CMS https://twiki.cern.ch/twiki/bin/view/CMSPublic/PhysicsResultsCombined

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The SM works (?)

4 von Manteuffel

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The SM works (!)

5 von Manteuffel

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Aside 1

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Anonymized comment overheard during this workshop

“Disgusting level of agreement”

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Disgusting (yet impressive) level of agreement

Collective mood since the Higgs discovery

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Disgusting (yet impressive) level of agreement

Collective mood since the Higgs discovery Can the SM be right?

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Aside 2

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2nd Anonymized comment overheard during this workshop

“But we know it’s wrong”

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The SM lives on, but only as an EFT

  • Quadratic sensitivity of Higgs mass to new scales
  • Fermion masses and mixings
  • Dark matter
  • Neutrinos
  • Baryogenesis
  • Inflation
  • …

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Disgusting (yet impressive) level of agreement between SM and data, but a spectacular failure in many regards

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Attacking the SM

  • Flavor
  • Electroweak precision
  • Collider

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Attacking the SM

  • Flavor
  • Electroweak precision
  • Collider

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Ultimately, precision calculations, discrepant data, and robust interpretations will spell the downfall of the SM, no matter which sector breaks through first

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The Flavor Attack

Buras

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The Flavor Attack – a 12 step program

Buras

Also B →D τ ν B →D* τ ν

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15 Straub

SM starting to crack?

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16

  • S. Jäger

SM starting to crack?

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17 Altmannshofer

SM starting to crack?

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18 Mannel

SM starting to crack?

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19 Ricciardi

SM starting to crack?

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20 Hurth

SM starting to crack?

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  • Many checks and tests remain

– Power corrections – Long-distance QCD – Charm threshold

  • More data

– Belle II: 50-75 ab-1 luminosity anticipated by 2021

  • About 100 luminosity of Belle or BaBar

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From hints to discovery

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Still more data-mining

  • S. Jäger
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Still more precision calculations

Hurth

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Still more precision calculations

Feldmann

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Thinking of new physics

  • Will discriminate NP models by patterns of

deviations in observables

25 Buras

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Thinking of new physics

  • Will discriminate NP models by patterns of

deviations in observables

26 De Fazio

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  • Correlations alleviate uncomfortable flat directions

between NP effects and theory errors

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Pattern recognition

Straub

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  • Correlations alleviate uncomfortable flat directions

between NP effects and theory errors

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Pattern recognition

Straub

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  • Concrete models allow full exploration of
  • bservables beyond typical QFV measurements

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Pattern recognition

Altmannshofer

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  • Concrete models allow full exploration of
  • bservables beyond typical QFV measurements
  • Flavor is intimately intertwined with collider physics

and electroweak physics in the SM

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Pattern recognition

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Flavor model at the EW scale

Bauer

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Flavor model at the EW scale

Bauer

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The Higgs as a Flavor Anchor

33 CMS-PAS-HIG-14-009

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The Higgs as a flavor violation probe

Kopp

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The Higgs as a flavor violation probe

CMS-PAS-HIG-14-005

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The Higgs as a CPV probe

Kopp

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The Higgs as a CPV probe

Kopp Harnik, Martin, Okui, Primulando, FY PRD 88 (2013) 7, 076009 [arXiv:1308.1094]

CPV sensitivity in h → τ+τ–

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The Higgs as a CPV probe

Brod

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The Higgs as a CPV probe

Brod

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  • Central role of the SM Higgs

– Unitarize longitudinal gauge boson scattering

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The Higgs as the SM Anchor

El Hedri

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Unitarization and NMSSM dark matter

41 El Hedri

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  • Central role of the Higgs

– Unitarize longitudinal gauge boson scattering – Breaks chiral SU(2)L symmetry, gives masses to charged fermion masses – Not yet determined to be the SM Higgs

  • To move forward, either compute in concrete models,

simplified models, or an EFT

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The Higgs as the SM Anchor

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  • Crucially important for the EFT to be precise and

complete for data interpretation

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The Higgs as the SM Anchor

Trott

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  • Crucially important for the EFT to be precise and

complete for data interpretation

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The Higgs as the SM Anchor

Trott

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  • SM-EFT to dimension 6 covers flavor, EW
  • bservables, Higgs physics

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The Higgs as the SM Anchor

Falkowski

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  • Interplay with EW observables must be self-

consistent!

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The Higgs as the SM Anchor

Trott

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  • Interplay with EW observables must be self-

consistent! But still promising attack of the SM-EFT

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The Higgs as the SM Anchor

Falkowski

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  • Interplay with EW observables must be self-

consistent! But still promising attack of the SM-EFT

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The Higgs as the SM Anchor

Falkowski

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  • Central program of LHC Run 2

– Experimental data thus far is disgustingly impressive – Must test Higgs via its decays, production modes, couplings, width, mass, branching fractions

  • Ideal marketplace for crosstalk between theory and

experiment

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Higgs Collider physics

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Precision calculations of Higgs xsecs

50 Haralander

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Precision calculations of Higgs xsecs

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  • B. Jäger
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Precision calculations of EW xsecs

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  • B. Jäger
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Need precise theory differential distributions

53 Haralander

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Differential distributions powerful NP probe

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In all cases, h → γγ

FY, PRD 90, 015009 (2014) [arXiv:1404.2924]

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The stakes: the fate of the universe

55 Goertz

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The stakes: the fate of the universe

56 Goertz

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The stakes: the fate of the universe

57 Goertz

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The stakes: gauge hierarchy resolution

58 Carmona

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The stakes: gauge hierarchy resolution

59 Carmona

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The stakes: GH resolution, many new states to discover

60 Kaminska

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The stakes: GH resolution, many new states to discover

61 Kaminska

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The stakes: GH resolution, many new states, new tool of boosted techniques

62 Flacke Flacke

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The stakes: GH resolution, many new states, new tool of boosted techniques

63 Flacke

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Also need SM in the boosted regime

64 Pecjak

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SM also entering unbroken SU(2) regime

65 Turczyk

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SM also entering unbroken SU(2) regime

66 Turczyk

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NP searches enabled only by precise jet physics calculations

67 Hoang

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SM: magic still possible

68 Schabinger

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SM: puzzles still remain

69 Manohar

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Next chapter of our story

  • Struggle between the SM and the data continues
  • More data will come in LHC Run 2, HL-LHC, Belle 2,

LBNF, Muon g-2, Mu2e, Xenon 1T, IceCube, Fermi- LAT, Planck, BICEP-II, ILC, FCC/CEPC/SPPC, LSST, DESI, …

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Next chapter of our story

  • The questions are huge

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“May you live in interesting times”

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Next chapter of our story

  • The questions are huge
  • The questions are patient

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“May you live in interesting times”

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Next chapter of our story

  • The questions are huge
  • The questions are patient
  • The questions are very patient

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“May you live in interesting times”

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75 ATLAS https://twiki.cern.ch/twiki/bin/view/AtlasPublic/StandardModelPublicResults Also CMS https://twiki.cern.ch/twiki/bin/view/CMSPublic/PhysicsResultsCombined