Bedeschi Roma3 Jan2020 split - Agenda (Indico)Microsoft PowerPoint - Bedeschi_Roma3_Jan2020_split...
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The FCC Option
F. Bedeschi, INFN
Roma3, January 29, 2020
Very brief motivations
FCCeeMachine and physics
FCChhMachine and physics
Schedule and costs
Final comments
Outline
Roma3, January 29, 2020
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Physics motivations
No (additional) signs of BSM physics.After intensive searches at LHC MNP > 1 TeV
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa2
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Physics motivations
No (additional) signs of BSM physics.After intensive searches at LHC MNP > 1 TeV
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa2
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Physics motivations
Higgs properties SM-like.
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa3
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Physics motivations
Higgs properties SM-like.After HL-LHC precision level of several %
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa3
Granada 2019
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Physics motivations
Higgs properties SM-like.After HL-LHC precision level of several %
Deviation from SM: d ~ v2/M2 v = 246 GeVM scale of new physics
M ~ 1 – 10 TeV d ~ 6 – 0.06%
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa3
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Physics motivations
Higgs properties SM-like.After HL-LHC precision level of several %
Deviation from SM: d ~ v2/M2 v = 246 GeVM scale of new physics
M ~ 1 – 10 TeV d ~ 6 – 0.06%
Need < ~ % sensitivity beyond HL-LHC
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa3
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Current physics landscape
No (additional) signs of BSM physics.After intensive searches at LHC
Higgs properties SM-like.At current precision level of several %
… but SM is an insufficient description
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa4
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Current physics landscape
No (additional) signs of BSM physics.After intensive searches at LHC
Higgs properties SM-like.At current precision level of several %
… but SM is an insufficient descriptionPrevalence of matter over anti-matter.
Not explained by current values of CKM elements
Neutrinos have masses – not acquired in the SM.
Compelling evidence for the existence of dark matter in the Universe with no candidate particle(s) in the SM.
What new machine in this scenario?
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa4
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Current directions
ICFA statement - Tokyo, March 2019: “ICFA confirms the international consensus that the highest priority for the next global
machine is a “Higgs Factory” capable of precision studies of the Higgs boson. ……………………………………………………………… ICFA notes with satisfaction the great progress of the various options for Higgs factories proposed across the world. All options will be considered in the European Strategy for Particle Physics Update and by ICFA.
ICFA report – LP2019, Toronto, August 2019: Worldwide effort for e+e- Higgs Factory must not fail!
Linear or Circular
Asia or Europe (or elsewhere?)
Recent comments on ESPPU preparations (B. Vachon – LP2019) Emerging consensus for the importance of a “Higgs factory” to fully
explore properties of the Higgs, EW sector, etc.
Need to prepare a clear path towards highest energy.Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa5
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The FCC integrated program
FCC integrated program can respond to these requests in an optimal way
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa6
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The FCC integrated program
FCC integrated program can respond to these requests in an optimal way
Comprehensive program to optimize physics opportunities
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa6
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The FCC integrated program
FCC integrated program can respond to these requests in an optimal way
Comprehensive program to optimize physics opportunitiesStage 1: FCC-ee (Z, W, H, tt)
Higgs factory, EW and top factory at highest luminosities.
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa6
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The FCC integrated program
FCC integrated program can respond to these requests in an optimal way
Comprehensive program to optimize physics opportunitiesStage 1: FCC-ee (Z, W, H, tt)
Higgs factory, EW and top factory at highest luminosities.
Stage 2: FCC-hh (~100 TeV) Natural continuation at energy frontier, with ion and eh options.
Complementary physics
Common civil engineering and technical infrastructures
Integrating an ambitious high-field magnet R&D program
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa6
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FCC e+e-
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa7
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FCC-ee
Double ring e+e- collider ~ 100 kmRF power limited to 50 MW/beam
2 IP currently - 4 IP possible
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa8
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FCC-ee
Double ring e+e- collider ~ 100 kmRF power limited to 50 MW/beam
2 IP currently - 4 IP possible
Booster ring for top up injection
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa8
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FCCee parameters
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa9
SR power 50 MW/beam
Total site power <300 MW
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Luminosity comparisons
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa10
Z
WW
ZH
tt
1 TeV 3 TeV100 GeV
100 x LEP2
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Physics at FCC-ee
Higgs factory106 e+e- → HZ
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa11
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Physics at FCC-ee
Higgs factory106 e+e- → HZ
EW & Top factory5x1012 e+e- → Z
108 e+e- → W+W- ;
106 e+e- → tt
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa11
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Physics at FCC-ee
Higgs factory106 e+e- → HZ
EW & Top factory5x1012 e+e- → Z
108 e+e- → W+W- ;
106 e+e- → tt
Flavor factory1012 e+e- → bb, cc
1011 e+e- → + -
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa11
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Physics at FCC-ee
Higgs factory106 e+e- → HZ
EW & Top factory5x1012 e+e- → Z
108 e+e- → W+W- ;
106 e+e- → tt
Flavor factory1012 e+e- → bb, cc
1011 e+e- → + -
Potential discovery of NPALPs, RH ν’s, …
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa11
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Higgs production
asd
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa12
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Higgs production
asd
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa12
pp @ LHC
e+e-
Very clean production
in e+e-
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Higgs total width
Higgs recoil provides model independent measurement of coupling to Zs(HZ) g2
HZ
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa13
L = 5 ab-1
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Higgs total width
Higgs recoil provides model independent measurement of coupling to Zs(HZ) g2
HZ
Critical:Beam energy spread: SR+BS
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa13
L = 5 ab-1
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Higgs total width
Higgs recoil provides model independent measurement of coupling to Zs(HZ) g2
HZ
Critical:Beam energy spread: SR+BS
Total width combining with
decays in specific channels
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa13
L = 5 ab-1
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Higgs coupling fits
Results limited only by statistics
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa14
k EFT
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Higgs coupling fits
Results limited only by statistics
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa14
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Triple Higgs
No direct production @ FCC-eeSensitivity through loop effects
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa15
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Triple Higgs
No direct production @ FCC-eeSensitivity through loop effects
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa15
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Triple Higgs
No direct production @ FCC-eeSensitivity through loop effects
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa15
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Triple Higgs
No direct production @ FCC-eeSensitivity through loop effects
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa15
dkl update 2020 FCChh
2.0(stat) + 2.5-4.0(syst) %
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EWK
Outstanding program of precision EWK measurementsO(10-100) better than LEP precision
Substantially reduce parametric uncertainties in theory
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa16
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EWK examples
W mass/width 0.5/1.2 MeV resolutionWW threshold scan/ direct measurements check and improve
Top quark mass/width 17/45 MeV resolution tt threshold scan – N3LO, ISR and FCCee luminosity spectrum
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa17
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EWK examples
W mass/width 0.5/1.2 MeV resolutionWW threshold scan/ direct measurements check and improve
Top quark mass/width 17/45 MeV resolution tt threshold scan – N3LO, ISR and FCCee luminosity spectrum
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa17
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S, T parameters (Peskin–Takeuchi)
Comparison of Higgs factories
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa18
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NP sensitivity from EFT fits
From exclusive fits Reach to several 10’s TeV
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa19
EWK observables
Higgs observables
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NP sensitivity from EFT fits
From exclusive fits Reach to several 10’s TeV
Theory uncertaintiesParametric~ exp. precision
Theory precision need3 loop Z pole
2 loop WW
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa19
EWK observables
Higgs observables
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Heavy flavors
Large heavy flavor production at Z pole
Very clean, well separated, pairs
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa20
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Heavy flavors
Large heavy flavor production at Z pole
Very clean, well separated, pairs
Example:Lepton universality
in B0 → K*0 τ+τ-
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa20
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Direct NP search example: HNL
HNL mix with active neutrino’sFully reconstructable decay with W
Small mixing long lifetime
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa21
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Direct NP search example: HNL
HNL mix with active neutrino’sFully reconstructable decay with W
Small mixing long lifetime
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa21
10 cm < ct < 100 cm
1012 Z
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Direct NP search example: HNL
HNL mix with active neutrino’sFully reconstructable decay with W
Small mixing long lifetime
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa21
10 cm < ct < 100 cm
1012 Z
0.01 cm < ct < 500 cm
1013 Z
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FCChh
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa22
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FCChh parameters
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa23
Total site power <600 MW
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FCChh key facts
asd
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa24
LHC technology
8.3 T NbTiHL-LHC technology
11 T Nb3Sn
16 T Nb3Sn
O(x10) E and L100 TeV
20 ab-1/exp.In 25 years
Key tech. issue:High field magnets
20 T with HTS
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FCChh magnets
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa25
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FCChh magnets
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa25
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Exploration potential
Search reach scaled from HL-LHC (2-3 TeV for SUSY)
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa26
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Exploration potential
Search reach scaled from HL-LHC (2-3 TeV for SUSY)
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa26
SUSY
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Exploration potential
Search reach scaled from HL-LHC (2-3 TeV for SUSY)
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa26
McCullough, FCC meeting
Rome, 2016
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Exploration potential
Search reach scaled from HL-LHC (2-3 TeV for SUSY)
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa26
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Dark matter
Dark matter (simplified models)100 TeV pp could cover all parameter space allowed by
cosmological bounds
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa27
M. McCullough, FCC week 2016
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FCC-ee + FCC-hh schedule
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa28
M. B
EN
ED
IKT
, CE
RN
202
0
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FCC costs
Total cost FCCee: 10,600 MCHFAddition for tt 1,100 MCHF
Total additional cost for FCChh: 17,000 MCHFStand alone ~25 BCHF
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa29
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ESG main scenarios
5 basic options for the future being explored by ESG
CERN funding:First 3 scenarios: 10-13% CERN budget in 2025-2045
Civil engineering assumed outside of CERN budget
4th scenario: ~20% CERN budget in 2025-2045
5th scenario is within the regular CERN budget
Last 2 scenarios assume that an e+e- collider is built outside of Europe
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa30
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Schedule comparisons
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa31
U. Bassler
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Final comments
Major physics potential at FCC-eeStudy Higgs x10 better than HL-LHC
EWPO x10-100 better than LEP
HF studies complementary to LHC-b/Belle II
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa32
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Final comments
Major physics potential at FCC-eeStudy Higgs x10 better than HL-LHC
EWPO x10-100 better than LEP
HF studies complementary to LHC-b/Belle II
Matches right time scale immediately after HL-LHCGives time for high field magnet development
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa32
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Final comments
Major physics potential at FCC-eeStudy Higgs x10 better than HL-LHC
EWPO x10-100 better than LEP
HF studies complementary to LHC-b/Belle II
Matches right time scale immediately after HL-LHCGives time for high field magnet development
Major physics and exploration potential at FCC-hhShares tunnel and much of the FCCee infrastructure
HHH to 5% precision
Huge jump in direct discovery potential
Roma3, January 29, 2020 F. Bedeschi, INFN-Pisa32
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Final comments
Major physics potential at FCC-eeStudy Higgs x10 better than HL-LHC
EWPO x10-100 better than LEP
HF studies complementary to LHC-b/Belle II
Matches right time scale immediately after HL-LHCGives time for high field magnet development
Major physics and exploration potential at FCC-hhShares tunnel and much of the FCCee infrastructure
HHH to 5% precision
Huge jump in direct discovery potential
Great vision and plan for the next 70 years of HEPRoma3, January 29, 2020 F. Bedeschi, INFN-Pisa32