Super B Physics Opportunities

David Hitlin SLUO Annual Meeting Sept. 17, 2009 1

Super Super BBPhysics OpportunitiesPhysics Opportunities

David HitlinDavid HitlinSLUO Annual MeetingSLUO Annual MeetingSeptember 17, 2009September 17, 2009


Why SuperWhy SuperBB ? ? The motivation to continue The motivation to continue ee++ee-- flavor physics studies with a Super flavor physics studies with a Super BB factory factory

beyond the beyond the BBAABBARAR/Belle/(LHC/Belle/(LHCbb)) era lies in its ability to make measurements that era lies in its ability to make measurements that have sensitivity to physics beyond the Standard Modelhave sensitivity to physics beyond the Standard Model This sensitivity extends to New Physics in This sensitivity extends to New Physics in b, c b, c and and decay decay

A data sample of A data sample of 50-75 ab50-75 ab-1-1 is required to provide this sensitivity is required to provide this sensitivity BBAABBAR AR +Belle total sample is +Belle total sample is <2 ab<2 ab-1-1

A luminosity in the range of 10A luminosity in the range of 103636 cm cm-2-2ss-1-1 is required to integrate this large a is required to integrate this large a sample in a reasonable timesample in a reasonable time

There are two approaches on the market to acquiring such a sampleThere are two approaches on the market to acquiring such a sample SuperKEKB at KEK and SuperSuperKEKB at KEK and SuperBB at Rome II Univ (Tor Vergata) or LNF at Rome II Univ (Tor Vergata) or LNF Both asymmetric colliders now use a version of the “Italian scheme”Both asymmetric colliders now use a version of the “Italian scheme”

Collide asymmetric energy rings having very low emittance, similar to those Collide asymmetric energy rings having very low emittance, similar to those developed for the ILC damping rings and high brightness light sourcesdeveloped for the ILC damping rings and high brightness light sourcesSuperSuperBB also employs a new type of final focus – a “crabbed waist” also employs a new type of final focus – a “crabbed waist”

and has a longitudinally polarized (~80%) LER beam and has a longitudinally polarized (~80%) LER beam Beam currents and wallplug power are reduced from brute force extrapolations Beam currents and wallplug power are reduced from brute force extrapolations

of the existing machines PEP-II and KEKBof the existing machines PEP-II and KEKB Luminosity-related backgrounds and radiation levels in the forward/backward Luminosity-related backgrounds and radiation levels in the forward/backward

directions are high: under intensive studydirections are high: under intensive study Design of an appropriate detector is a tractable problemDesign of an appropriate detector is a tractable problem


SPARXSPARX

Collider HallCollider Hall

SuperB LINAC

SuperB LINAC

Roman Villa

Roman Villa

SuperB at the Tor Vergata site with circumference 1.8 km


The SuperThe SuperBB detector is an upgrade of detector is an upgrade of BBAABBARAR

New SVT with New SVT with striplet-> pixel Layer 0striplet-> pixel Layer 0

New DCHNew DCH Smaller DIRC SOBSmaller DIRC SOB Possible forward PIDPossible forward PID New EMC forwardNew EMC forward

endcapendcap Possible rear endcapPossible rear endcap

calorimeter calorimeter Improved muon IDImproved muon ID

BABAR

SuperB


Who ?Who ? The SuperThe SuperBB accelerator and detector effort has produced a CDR, accelerator and detector effort has produced a CDR,

and is now in the middle of a two year TDR phaseand is now in the middle of a two year TDR phase Effort from Italy, US, France, Russia, Canada, UK, Spain, Effort from Italy, US, France, Russia, Canada, UK, Spain,

NorwayNorway European roadmap recognizes the SuperEuropean roadmap recognizes the SuperBB project project

Progress reported to the CERN Strategy GroupProgress reported to the CERN Strategy Group P5 report includes SuperP5 report includes SuperBB at Scenario B at Scenario B Approval process is proceeding apace in ItalyApproval process is proceeding apace in Italy

Anticipate a decision by the end of the yearAnticipate a decision by the end of the year Site selection soon thereafterSite selection soon thereafter Form the detector/physics collaboration within months of Form the detector/physics collaboration within months of

decisiondecision Five year construction periodFive year construction period

Many PEP-II and Many PEP-II and BBAABBARAR components can be re-used components can be re-used


Two nascent effortsTwo nascent efforts

Both now employ versions of the “Italian scheme”:Both now employ versions of the “Italian scheme”: Low emittance rings with large crossing anglesLow emittance rings with large crossing angles

Integrated Luminosity(1/ab)

0.00

20.00

40.00

60.00

80.00

100.00

120.00

140.00

>80ab-1 after 6 years

2015? 2020?

3year shutdown for upgrade

L~2x1035

L~8x1035

50ab-1 by ~2020

10ab-1 ~ 2016


What’s the killer app?What’s the killer app?

Is it the ability to discover lepton flavor-violating Is it the ability to discover lepton flavor-violating decays and determine decays and determine the chirality of the LFV coupling ?the chirality of the LFV coupling ? Neutrino oscillations demonstrate the existence of neutral LFV Neutrino oscillations demonstrate the existence of neutral LFV

couplingscouplings Charged LFV are very small in the Standard Model, but measureable at Charged LFV are very small in the Standard Model, but measureable at

a Super a Super BB factory factory

Is it the unique sensitivity to new Is it the unique sensitivity to new CPCP phases beyond the CKM phase in phases beyond the CKM phase in BB and and DD decay through studies of direct and indirect decay through studies of direct and indirect CPCP asymmetries? asymmetries?

Is it the sensitivity to the existence of a fourth quark generation ?Is it the sensitivity to the existence of a fourth quark generation ?

Is it the sensitivity to right-handed currents ?Is it the sensitivity to right-handed currents ?

Is it the sensitive tests of Is it the sensitive tests of CPTCPT invariance at the highest available invariance at the highest available qq2 2

made possible by exploiting quantum coherencemade possible by exploiting quantum coherence ??

Is it the whole panoply of measurements and the pattern of effects Is it the whole panoply of measurements and the pattern of effects uncovered that can serve as a “DNA chip” for New Physics found at LHC ?uncovered that can serve as a “DNA chip” for New Physics found at LHC ?


Many SM extensions yield measurable effects in flavor Many SM extensions yield measurable effects in flavor physicsphysics

Extra dim w/SM on brane

SupersoftSUSY breakingDirac gauginos

SM-like flavor physics Observable effects of New Physics

MSSMMFV

low tan

Generic Little Higgs

Generic extra dim w SM in bulk

SUSY GUTs

Effective SUSY

MSSMMFV

large tan

after G. Hiller

Little Higgs w/MFV UV fix


Lepton Flavor Violation in Lepton Flavor Violation in decays decaysSuper Super BB Factory sensitivity directly confronts New Physics models Factory sensitivity directly confronts New Physics models

SuperBsensitivityFor 75 ab-1

We expect to see LFV events, not just improve limits


Lepton Flavor Violation in Lepton Flavor Violation in decays decays

Antusch, Arganda, Herrero, Teixeira, JHEP 0611:090,2006

Impact of Impact of 13 13 in a SUSY seesaw model in a SUSY seesaw model


CMSSM : e vanishes at all SPS points MVF-NP extensions : e vanishes as s130is independent of s13

1 1 7510ab : 75ab for ( ), 7.5 for ( )

10 B B

LFV

2

5 disc

B B


Lepton sector constraints in an SU(3)-flavored MSSM

Calibbi, Jones Perez, Masiero, Park, Porod & Vives arXiv 0907.4069v2

Lightest slepton mass


107 B

(

M 1

/2

SuperB

SO(10) MSSMLFV from PMNS

LFV from CKMBeyond MFVBeyond MFV

SUSY GUTnow

J.K.Parry, H.-H. Zhanghep-ph/0710.5443

Allowed by ms

From Bs phase

now

Super BFactory

Super B Factory


LFV branching fraction ratios are discriminatorsLFV branching fraction ratios are discriminators

Blanke, Buras, Duling, Recksiegel & Tarantino, arXiv:0906.545v1


A longitudinally polarized electron beam, producing polarized ’s,can determinate the chiral structure of lepton flavor-violating interactions

Polarized Polarized ’’s can probe the chiral structure of LFVs can probe the chiral structure of LFV in a model-independent manner in a model-independent manner

Dassinger, Feldmann, Mannel, and TurczykJHEP 0710:039,2007;

[See also Matsuzaki and SandaPhys.Rev.D77:073003,2008 ]


mixing is now well-established and mixing is now well-established and largelargeD0 K decay time analysis BABAR: PRL 98 211802 (2007) 3.9

D0 K K vs K lifetime difference analysis Belle: PRL 98 211803 (2007) 3.2

D0 Ks time dependent amplitude analysis Belle: PRL 99 131803 (2007) 2.2

D0 K decay time analysis CDF: PRL 100, 121802 (2008) 3.8D0 K K vs K lifetime difference analysis BABAR: PRD 78, 011105 R (2008) 3.0

D0 K 0 time dependent amplitude analysis BABAR: arXiv:0807, 4544 (2008) 3.1

D0 K relative strong phase using quantum-correlated measurements in e+e-

CLEO-c: PRD 78, 012001, (2008)

D0 K-+ and K+K- lifetime ratios BABAR: EPS 2009 4.1

Significance of all mixing results (HFAG Preliminary– EPS2009): 10.2

0 0D D

0 0D D

This raises the exciting possibility of searching for This raises the exciting possibility of searching for CP CP violationviolation

Super B Factory @ 75 ab-1

+

+


CPCP violation in violation in CC=2 mixing in an LHT =2 mixing in an LHT modelmodel

|q/p| fromD→K, K..

75 ab-1

SL

*

( ) ( )

( ) ( )

tags

1%

N t N ta

N t N t

D

LHT modelLittle Higgs w T parityBigi, Blanke, Buras & RecksiegelarXiv:0904.1545v3 [hep-ph]


CKM Fitter results as of Moriond 2009CKM Fitter results as of Moriond 2009The The BBAABBARAR and Belle and Belle CP CP asymmetry measurementsasymmetry measurements

together with improved precision in othertogether with improved precision in othermeasurementsmeasurements

have produced a set of highly have produced a set of highly overconstrained tests, which overconstrained tests, which grosso modogrosso modo, are well-satisfied, are well-satisfied

A closer look, however, reveals some issuesA closer look, however, reveals some issues


A variety of analyses have pinpointed tensions in the A variety of analyses have pinpointed tensions in the UT UT These are all at the 2-3 s level, but occur in several placesThese are all at the 2-3 s level, but occur in several places

e.g.e.g., Lunghi and Soni analysis, Lunghi and Soni analysis


Does the agreement of the overconstrained tests Does the agreement of the overconstrained tests stand up to detailed scrutiny ?stand up to detailed scrutiny ?

There is actually some tension, and there are enough constraints There is actually some tension, and there are enough constraints to explore these issuesto explore these issues

Caveats:Caveats: There may be Standard Model explanations for some effectsThere may be Standard Model explanations for some effects All issues are at the <3All issues are at the <3 level level

Inclusive and exclusive Inclusive and exclusive VVubub determinations are not in good agreement determinations are not in good agreement There are also issues with inclusive/exclusive There are also issues with inclusive/exclusive VVcbcb

The The BB((BB→→)) conflictconflict The agreement of the fitted, The agreement of the fitted, i.e., i.e., SM-predicted value of SM-predicted value of sin 2sin 2 vs the vs the

directly measured value using tree decays and loop decays is not perfect directly measured value using tree decays and loop decays is not perfect The The BBss → → ψϕψϕ phasephase The The KK problem problem


The The BB((BB→→)) conflictconflict

B(B→) also constrains Higgs doublet models

G. Eigen

Effectively a measurement of fB

Determines same constraint


Is there a fourth quark generation ?Is there a fourth quark generation ? A fourth generation CKM-like mixing matrix hasA fourth generation CKM-like mixing matrix has

2 additional quark masses 2 additional quark masses 3 additional mixing angles3 additional mixing angles 2 additional 2 additional CPCP-violating phases-violating phases

A recent analysis by A recent analysis by Bobrowski, Lenz, Reidl and Rohrwild Bobrowski, Lenz, Reidl and Rohrwild shows that large regions of the new shows that large regions of the new parameter spaces are still allowedparameter spaces are still allowed

SuperSuperBB factories will be the primary factories will be the primary tool to close this window, or, perhaps,tool to close this window, or, perhaps,to find significantly non-zero values ofto find significantly non-zero values ofthese fourth generation parametersthese fourth generation parameters


New physics in New physics in BBdd, B, Bss mixing ??mixing ??

There is still room for sizeable contributions from New Physics

Model-independent parametrization for New Physics in ΔF=2 transitions

The preferred (SM+NP) ΔΔNPNP value is value is currentlycurrently

~ 2~ 2σσ from SM for both from SM for both BBdd and and BBss systems systems

2 22 Re( ) i m( ) 1q

q qi iNP iq q q q q qI e r e h e

0 0 0 012 12| | | |SM NP NP SM

q q q q qB M B B M B

To clarify:1. Updated Tevatron result2. LHCb sin2s measurement


CPCPVV Probes of New Physics Probes of New Physics In the Standard Model we expect the same value for “sin2 ” in

modes, but different SUSY models can produce different asymmetries

Since the penguin modes have branching fractions one or two orders of magnitude less than tree modes, a great deal of luminosity is required to make these measurements to meaningful precision

0 0/ SB J K

, , ,b ccs b ccd b sss b dds

* *2

* * ( 1) icstb td cbtree

cstb td cb

V V V Vq Ae

p A V V V V

* *2

* *( 1) itb td tb ts

penguintb td tb ts

V V V Vq Ae

p A V V V V

0 0SB K

~

b u,c,t s b u,c,t s b u,c,t s b d,s,b s

W - H - - g, 0

~~ ~~ ~~

SUSY(2 ) SUSYsin(2 )iK

Ae S

A


LHC

Super B FactoriesSquark mass matrix (d sector)


SPS-9SPS-8SPS-7SPS-6SPS-5SPS-4SPS-3SPS-2SPS-1

Ghodbane and Martyn

1500

1000

500

250


Many channels can show effects in the range Many channels can show effects in the range SS~(0.01-0.04~(0.01-0.04))

New Physics in New Physics in CPCPVV: : sin2sin2 from from ss Penguins… Penguins…

SuperB 75 ab-1

(*) theory limited

d d

sb

W-

B0d

t ss

K0

g

sb b s

~

~ ~

23d

LR

X


Precision of “sin2Precision of “sin2” measurement in ” measurement in BB KK00

J/K0

K0

SUSY(2 ) SUSYsin(2 )iK

Ae S

A


Kinematic distributions in Kinematic distributions in

0

0.5

0.5

1

0

1

FL

A

FB

SMC7= – C7

SM

(*)B K


Much more data is required for a definitive resultMuch more data is required for a definitive result

Can be pursued with exclusive or inclusive reconstruction

A measure of the relative merits is the precision in determination of the zero

(*)B K l l sB x l l

Exclusive Inclusive

Theory error: ~5%Theory error: ~5% Huber, Hurth, LunghiHuber, Hurth, Lunghi arxiv:0712.3009arxiv:0712.3009

Experimental error (Super Experimental error (Super B B Factory): 4-6%Factory): 4-6%

Theory error: 9% + Theory error: 9% + OO((//mmbb) uncertainty) uncertainty

Egede, Hurth, Matias, Ramon, ReeceEgede, Hurth, Matias, Ramon, Reece arxiv:0807.2589arxiv:0807.2589

Experimental error (SHLC): 2.1%Experimental error (SHLC): 2.1%


The pattern of deviation from the SM values is diagnosticThe pattern of deviation from the SM values is diagnosticModel Bd

Unitarity

Time-dep. CPV Rare B decay Other signals

mSUGRA(moderate tan)

- - - -

mSUGRA(large tan )

Bd mixing - B → (D)*b → sl+l−

Bs → Bs mixing

SUSY GUT with R -B → KS

B → K∗-

Bs mixing LFV, n EDM

Effective SUSY Bd mixing B → KS ACP (b→s) b → sl +l −

Bs mixing

KK graviton exchange

- -b → sl +l − -

Split fermions in large extra dimensions

Bd mixing - b → sl +l − mixing mixing

Bulk fermions in warped extra dimensions

Bd mixing B → KS b → sl +l − Bs mixingmixing

Universal extra dimensions - -

b → sl +l −

b → sK →

K0 K 0

0 0D D

D0D0



A Super A Super BB Factory is a DNA chip for New Physics Factory is a DNA chip for New Physics


A new generation of flavor physics experiments will play a vital role in understanding new physics found at LHC A full set of constraints requires studies of EDMs, (g-2),

rare and decays, e conversion and rare K, D and B decays High statistics (50-75 ab-1 ) data samples at e+e- Super B Factories

provide both Discovery potential

charged lepton flavor violation CPV in mixing, and

A DNA chip to discriminate between model of New Physics The achievable levels of sensitivity in rare b, c and decays

provide substantial coverage in the parameter space The SuperB program, of course, overlaps with the programs of

LHC flavor experiments such as LHCb, but the e+e- environment makes possible a substantial number of unique and important physics measurements in areas sensitive to New Physics

ConclusionsConclusions

0 0D D



Charm FCNC

Charm mixing and CPVB Physics: 4S)

Physics Bs Physics: (5S)


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