1 Summary of BNM1 and Goals of BNM2 M. Hazumi (KEK)

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Summary of BNM1Summary of BNM1andand

Goals of BNM2Goals of BNM2

M. Hazumi (KEK)M. Hazumi (KEK)

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BNM1 workshopBNM1 workshop

BNM = B factories and New MeasurementsBNM = B factories and New Measurements Sep.13-14, 2006 at KEKSep.13-14, 2006 at KEK http://www-conf.kek.jp/bnm/2006/http://www-conf.kek.jp/bnm/2006/ 100 participants100 participants 49 talks !49 talks ! Many new ideas proposed !Many new ideas proposed !

This workshop (BNM2) is afollow-up of BNM1.

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Integrated

Luminosity

s

Detector performance

We are here.

New ideas in 3+1 dimensionsNew ideas in 3+1 dimensions

4th dimension = theory

4s)

1ab-1

5s)

50ab-1

SuperB

(3s)

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Luminosity Budget at BelleLuminosity Budget at Belleas of Summer 2006

Your new ideas will change the budget in the future(at Belle and a Super B factory).

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(3S) ~ 3/fb(5S) ~ 24/fbOff-resonance ~ 60/fb(4S) ~532/fb

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Topics at BNM1Topics at BNM1

Upsilon(5S) and other energiesUpsilon(5S) and other energies New DetectorsNew Detectors New ideas on Upsilon(4S)New ideas on Upsilon(4S) Physics at Super B factoriesPhysics at Super B factories

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1) Upsilon(5S) and other energies1) Upsilon(5S) and other energies

Bs physics with 100-500/fb on Upsilon(5S)Bs physics with 100-500/fb on Upsilon(5S) (A.Drutskoy)(A.Drutskoy) Advantages: good Advantages: good rec., high trigger eff., modes with rec., high trigger eff., modes with accessible accessible Observation of Bs Observation of Bs , , sensitive to new physicssensitive to new physics Measurement of Measurement of (before LHCb) with Bs (before LHCb) with Bs Ds Ds(*)(*)DsDs(*)(*)

Why don’t we consider Why don’t we consider b, Bc, b, Bc, b (CMb (CM energy up to ~ 14 GeV) ? energy up to ~ 14 GeV) ?

Bs physics with 1-30/ab (M.Pierini)Bs physics with 1-30/ab (M.Pierini) Simulation studies for Bs Simulation studies for Bs mm, J/ mm, J/ Simulation studies for ASimulation studies for ASLSL, , 3 with Bs 3 with Bs K K00, Vts/Vtd with Bs , Vts/Vtd with Bs , K*, K*

neutrinos photonsAdvantages at e+e- B factory

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K. Kinoshita

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M. Pierini

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Upsilon(1S,2S,3S)Upsilon(1S,2S,3S) Light dark matterLight dark matter (LDM) (LDM) (B. McElrath)(B. McElrath)

Upsilon Upsilon ( (: dark matter particle): dark matter particle) Motivation and search methods discussedMotivation and search methods discussed e+e- B factory is the best place to search for LDM with mass < me+e- B factory is the best place to search for LDM with mass < mbb

Best choice for LDM is Upsilon(3S) Best choice for LDM is Upsilon(3S) (O. Tajima)(O. Tajima) e+e- e+e- Upsilon(3S) Upsilon(3S) Upsilon(1S), Upsilon(1S) Upsilon(1S), Upsilon(1S) (invisible) (invisible) Belle’s engineering run on 3S and prospects shownBelle’s engineering run on 3S and prospects shown

Very light (MeV) dark matterVery light (MeV) dark matter (D. Choudhury)(D. Choudhury) Motivated by unexpectedly large 511keV Motivated by unexpectedly large 511keV from galactic center from galactic center e+e- e+e- U U (U: spin-1 boson coupling to both e+e- and (U: spin-1 boson coupling to both e+e- and ))

Test of lepton universalityTest of lepton universality (M. Sanchis-Lozan(M. Sanchis-Lozano)o) ratios of branching ratios for Upsilon ratios of branching ratios for Upsilon at a few % level at a few % level Enhanced Upsilon Enhanced Upsilon in some new physics models (e.g. NMSSM) results in larg in some new physics models (e.g. NMSSM) results in larg

er Upsilon er Upsilon branching fraction (due to soft photons) branching fraction (due to soft photons) Complementary to LDM search (if LDM from NMSSM)Complementary to LDM search (if LDM from NMSSM)

CP violation in Upsilon decay, and some thoughs on Upsilon CP violation in Upsilon decay, and some thoughs on Upsilon DD (H. Li) DD (H. Li)

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B. McElrath

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by McElrath

90 %C.L. limit

SM : Y(1S)barToyMC 10fb-1

O. Tajima

O(1)/fb data sufficient to obtain interesting results

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D. Choudhury

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D. Choudhury

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Proposal of testing lepton universality (to the percent level) at a (Super) B factoryProposal of testing lepton universality (to the percent level) at a (Super) B factory

For direct leptonic (3S) decays:

In order to get a similar statistical error ( 8%) for the ratio R/

one should naively require the same integrated luminosity of 1.2 fb-1, i.e.

1 day of data taking at 1034 cm-2s-1 (as a reference value)

To get a statistical error of 1%

few days at 1034 cm-2s-1

Data used in the CLEO analysis consisted of on resonance samples of 1.1 fb-1, 1.2 fb-1 and 1.2 fb-1

for the (1S), (2S) and (3S) amounting to about 20 M, 10 M and 5 M decays, respectively

together with off-resonances samples of 0.2, 0.4 and 0.2 fb-1

With respect to the decay chain (3S) π + π - (1S,2S) → l + l -

despite a smaller combined BF an integrated luminosity of several fb-1

requiring several days of data taking at a B-factory sitting on the (3S)should be enough for testing lepton universality to the few % level

Similarly (or much better) for a Super B-factory running on the (4S) / (3S)

M. Sanchis-Rosano

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(1S) KSKS could be reached at future Super-B factory?

The design luminosity of super-KEKB: 81035 cm2s1The observed cross section of Y(1S) ( CLEO): 21.5nb With one year running at super-KEKB: 1011 Y(1S) events/year

The current limit: BR((1S)K+K10@90% C.L. while the theoretical prediction: BR((1S)K+K10 , Assuming BR((1S)K+KBR((1S)KSKLone get:

BR(Y(1S) KSKS) 6.4 1011 tiny!

Unfortunately, it is very hard to probe the CP violated processes in Y(1S)K0K0bar decays! Anyway, one has to search for (1S)KSKL /K+Kfirstly.

H. Li

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Summary (2)125

2.0

1

))1((

))1((2

KKSBR

DDSBR

Coherent and Time-Dependent Analysis!Toy MC study in progress.

The Branching fraction of Y(1S)D0D0bar could be as large as 10The number of D0D0bar @super-KEKB/year may be the same as those at BESIII with one year running. But we can use both time and coherent information to extract mixing and CP parameters. It is very interesting to make a quick measurements of the following processes:

).(

)(

);)1((

))1((

0*0*

00*

0*0

00

DDee

DDee

DDSee

DDSee

C=1 , coherent production

Incoherent production (background)

Very Preliminary

H. Li

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HomeworkHomework One good figure to show constraints on DMOne good figure to show constraints on DM

include all DM searchesinclude all DM searches Experimental considerations on MeV DM, leExperimental considerations on MeV DM, le

pton universality testspton universality tests Other topics not yet discussedOther topics not yet discussed

epsilon_b searchepsilon_b search Measurement of Measurement of ss LFV in Upsilon decaysLFV in Upsilon decays

(provocative statement): SuperB can give us 10(provocative statement): SuperB can give us 101212 Up Upsilon(1S). Why don’t we think about Upsilon(1S) silon(1S). Why don’t we think about Upsilon(1S) for example ?for example ?

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2) New Detectors2) New Detectors

TOP counter TOP counter (K. Inami)(K. Inami) APDs for Aerogel RICHAPDs for Aerogel RICH (Y. Mazuka)(Y. Mazuka) PID in the forward regionPID in the forward region (S. Korpar)(S. Korpar) Electromagnetic calorimeter upgradeElectromagnetic calorimeter upgrade (A. Kuzmin)(A. Kuzmin)

SpeculationSpeculation Super-flat beampipeSuper-flat beampipe (N. Katayama)(N. Katayama)

Bs mixing meas. may be possible !?Bs mixing meas. may be possible !? Great continuum rejectionGreat continuum rejection

Very forward detectorVery forward detector (M. Hazumi)(M. Hazumi) Improvement in full-reconstruction physicsImprovement in full-reconstruction physics Improvement in light DM search and similar searchesImprovement in light DM search and similar searches

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TOP counter Summary Square-shape MCP-PMT with GaAsP

Developing prototypes with HPK Enough gain and TTS (~35ps) Lifetime test has started.

Multi-alkali photo-cathode MCP-PMT: O.K. Focusing system

>4.3 separation for 4 GeV/c Test mirror performance

Checking accuracy Focusing mirror

K. Inami

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A novel photo sensor of silicon APDs

• 100~2000 pixels / typical size ~1mm2 • each pixel = independent silicon APD• Operated in Geiger mode• Number of fired pixels = Number of photons• Photon Detection Efficiency (PDE)

• There are MRS-APD, SiPM, MPPC, etc

Name MRS-APD1710series

ManufacturerCPTA, Russia

Window size 1.1mm2

Number of pixels

556

Measured sample

geom GeigerPDE QE geomGeiger : Probability of Geiger discharge

: Geometrical efficiency

Y. Mazuka

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S. Korpar

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Pure CsI for endcap ECLPure CsI for endcap ECL A. Kuzmin

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3) New Ideas on Upsilon(4S)3) New Ideas on Upsilon(4S) photon conversionphoton conversion

SS00(Ishino, Yoshikawa)(Ishino, Yoshikawa) 8-fold ambiguity 8-fold ambiguity 2-fold 2-fold I=5/2 detected; important to distinguish b/w new physics I=5/2 detected; important to distinguish b/w new physics

and rescattering within SMand rescattering within SM K*K*Nakao)Nakao)

New access to right-handed current amplitudeNew access to right-handed current amplitude

BB++ KK++ angular analysis (Soni) angular analysis (Soni) Access to CP-violating phase in right-handed b Access to CP-violating phase in right-handed b sg sg Tiny SM pollution (had. uncertainty ~ ms/mb*Tiny SM pollution (had. uncertainty ~ ms/mb*22

T-odd asymmetry in B T-odd asymmetry in B ppGeng)Geng) either T-odd asym. or direct CPV is sizableeither T-odd asym. or direct CPV is sizable

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4) Physics at Super B factoriesSummary of SuperKEKB sensitivity studies

What’s new, updated, missing ?

RK 0.07 0.02

Int. Lumi (ab-1)

0 5 10 20 30 40 50

A10 13% 4%

bd 7.5

gray: no update from SuperKEKB LoI

skyblue: updated from SuperKEKB LoI

yellow: New !

red circle: first observation ! explanatory note

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Full reconstruction modes Int. Lumi (ab-1)

0 5 10 20 30 40 50

B 5GeV (2) at tan = 30

B [email protected] with present central [email protected] with SM expectation

BK+ 5@33ab-1

Very important progress on these clean modes !

Need to work on B K*, Ks

Need to work on Bd , e+e-

similar sensitivity from B Dsimilar sensitivity from B D

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b s/d precision

RK 0.07 0.02

Int. Lumi (ab-1)

0 5 10 20 30 40 50

ACP(bs) 0.01 0.005

A9 11% 4%

A10 13% 4%

bd 7.5

S(Ks0) 0.1 0.03

S(0 0.3

AR w/ pol 3 if AR~AL

S(KsKsKs) 0.105 0.037S(K0) 0.073 0.029S(’K0) 0.038 0.020

A(Ks0 0.072

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Error on Error on S S at Super KEKBat Super KEKB

SS errors @5ab errors @5ab-1 -1 @50ab@50ab-1-1 KsKsKs KsKsKs 0.105 0.037 0.105 0.037KK0 0 0.073 0.0290.073 0.029’’KK00 0.038 0.020 0.038 0.020

3 mode 3 mode combined 0.035 0.019combined 0.035 0.019

K. Hara

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CKM fit Int. Lumi (ab-1)

0 5 10 20 30 40 50

1 0.016 0.012

2 2deg.

3 2deg.

Vub(inclsv) 6.6% 6.1%

Vub(exclsv) ~12% ~5%

29And many other sensitivity numbers how to use them for new physics studies ?

K.F.Chen

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Tau LFV processesTau LFV vs. mu LFV, Which is important?

and their CP conjugates

“Polarized” tau decay

Angular correlation => polarized tau decay

R.Kitano and Y.O. 2001

Muon polarization in , A.Matsuzaki

Y. Okada

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Tau LFV examples

E6 GUT with U(2) like flavor symmetry

B(>)~10-8, B(->e)~10-11

-->R

N.Maekawa, K.Sakurai

SU(5) GUT with seesaw neutrino T.GotoB(>)~10-8 possible(In other cases, B(->e) is more important.) -->L

Left-Right symmetric modelwith low energy seesaw.

B(->ll) ~10-8 possible

M.Aoki

(In other cases, B(->3e) orB(->e) is more important.)

Different features about relationship between tau and mu LFVprocesses and asymmetries

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Future prospect for LFV

• Possible sensitivity at 5ab-1

Estimatedupper limitrange of Br

PDG2006BelleBabar

based on eff. and NBG of most sensitive analysis

K. Inami

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• Br~O(10-9) at Super B factory

Future prospectK. Inami

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Physics impact

• Physics reach for SUSY parameters

• After observation!– To specify the model,– Angular correlation– Muon polarization, etc.

K. Inami

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Tau physics

Direct CPV in -->K-

T.Morozumi

CPV in forward-backward asymmetry

W

s

u

H-

s

u

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To do

• Finish sensitivity studies

• start sensitivity studies for new modes

• put them into a global picture

Revised “SuperKEKB physics book” by the end of February 2007.Publication in spring 2007 (physics reports).

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General Mixing FrameworkGeneral Mixing FrameworkK. Okumura

J. Park

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SUSY GUT ModelsSUSY GUT ModelsT. Goto

N. Maekawa

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Major Achievements Expected at SuperKEKB

Case 1: All Consistent with Kobayashi-Maskawa TheoryCase 1: All Consistent with Kobayashi-Maskawa Theory

Discovery of T Violation in B p

Discovery of B K

Discovery of B D

Discovery of B

CKM Angle Measurements with 1 degree precision

Discovery of CP Violation in Charged B Decays

Discovery of Direct CP Violation in B0 K Decays (2005)

Discovery of CP Violation in Neutral B Meson System (2001)

|Vub| with 5% Precision

Search for New CP-Violating Phase in b s with 1 degree precision

“Discovery” withsigfinicance > 5

Discovery of New Subatmic Particles

sin2W with O(10-4) precision

Observations with (5S), (3S) etc.

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Major Achievements Expected at SuperKEKB

Case 1: All Consistent with Kobayashi-Maskawa TheoryCase 1: All Consistent with Kobayashi-Maskawa Theory

Discovery of T Violation in B p

Discovery of B K

Discovery of B D

Discovery of B

CKM Angle Measurements with 1 degree precision

Discovery of CP Violation in Charged B Decays

Discovery of Direct CP Violation in B0 K Decays (2005)

Discovery of CP Violation in Neutral B Meson System (2001)

|Vub| with 5% Precision

Search for New CP-Violating Phase in b s with 1 degree precision

“Discovery” withsigfinicance > 5

Discovery of New Subatmic Particles

Case 2: New Physics with Extended Flavor StructureCase 2: New Physics with Extended Flavor Structure

Discovery of Lepton Flavor Violation in Decays#

Discovery of Lepton Flavor Violation in Decays#

Discovery of New Right-Handed Current in b s Transitions #

Discovery of New Right-Handed Current in b s Transitions #

# SUSY GUT withgluino mass = 600GeV,tan = 30

Observations with (5S), (3S) etc.

sin2W with O(10-4) precisionDiscovery of New CP Violation

in B K0 Decays#

Discovery of New CP Violation

in B K0 Decays#

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Comparison of Super-B and LHCb

SuperKEKB 5ab-1 50ab-1 LHCb 2fb-1

No other experiment can compete for New Physics reach in the quark sector.

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Beyond the SM

New CP violation,Lepton Number Violation

Can be discovered anytime

Big question of quark flavor physics 1) What does the flavor structure of TeV new physics look like ? (How does it taste ?)


Experiment-drivenExperiment-driven

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Is there flavor symmetry yet to be discovered ?Is there flavor symmetry yet to be discovered ?

The number of free parameters < 10 relation between CKM and masses !!

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1-1) tCPV in B0 K0, ’K0, KsKsKs1-2) (t)CPV in b s1-3) B , , D1-4)

1-1) tCPV in B0 K0, ’K0, KsKsKs1-2) (t)CPV in b s1-3) B , , D1-4)

Big question of quark flavor physics 2)Is there flavor symmetry yet to be discovered ?

Big question of quark flavor physics 2)Is there flavor symmetry yet to be discovered ?

Unitarity triangle with 1% precisionUnitarity triangle with 1% precision


Subquestions1-1) Are there new CP-violating phases ?1-2) Are there new right-handed currents ?1-3) Are there effects from new Higgs fields ?1-4) Are there new flavor violation ?


Subquestions1-1) Are there new CP-violating phases ?1-2) Are there new right-handed currents ?1-3) Are there effects from new Higgs fields ?1-4) Are there new flavor violation ?

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Goals of BNM2Goals of BNM2

Answers to questions/homework at Answers to questions/homework at BNM1BNM1

Wrap-up reports on SuperKEKB physicsWrap-up reports on SuperKEKB physics Close-to-the-final figures, numbers for Close-to-the-final figures, numbers for

physics bookphysics book Present further new ideasPresent further new ideas Further brain-stormingFurther brain-storming Enjoy our stay in Nara !Enjoy our stay in Nara !

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1 Summary of BNM1 and Goals of BNM2 M. Hazumi (KEK)

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