Some Highlights of the BABAR Experiment - TU Dresdenschubert/talks/0410-zeuthen.pdf · 2004. 10....

27 / 10 / 04 K. R. Schubert (TU Dresden), Seminar DESY Zeuthen 1

PEP-II and BABARObservation of Direct CP Violation in B → K πDecays B → ccK and B → ssKCP Asymmetries in Decays B → ππ and ρρDescribing and Fitting Asymmetries in the Standard ModelThe CKM Matrix Element |Vcb|Test of CPT Symmetry, Tau and Charm, Radiative Return

K. R. Schubert, TU DresdenK. R. Schubert, TU Dresden

Seminar DESY Zeuthen, 27/10/04

Highlights ofthe BABAR Experiment

Some

+- +-


cpv K und B

∆t/τ(KS)

cpv2-k&b1999

N

106

105

104

103

102

A

0.4

0.2

0

-0.2

-0.4

K → π+π−

∆t/τ(KS)

1999

B→(cc)KS

B0

B0

N

A

BABAR

2004


Search for CPV(B) was not „blind“. There was a clearStandard-Model expectation:

e+

e-γ

ge ϒ(4S),10.58 GeVB0

B0

c sgw

K0

J/ψ

gs

g

Wgw

c

( ) ( )( ) ( ) ( )[ ].proddecay0000

0000

sin2sin//// ttm

KJBKJBKJBKJBA

SS

SS −∆⋅=→Γ+→Γ→Γ−→Γ

= βψψψψ

d

dgs

b

b

ge

Value of sin2β given by St.Model quark mixing: 0.5 – 0.8. But ≈ 3.107 BB events necessary!Best production method:

É

¿

10

Vub*/Aλ3 Vtd/Aλ3

β

α

γ


Plan reachedE [GeV] e- / e+ 9.0 / 3.1 yesI [A] e- / e+ 0.6 / 2.1 1.5 / 2.4L [cm-2 s-1] 3 x 1033 9.2 x 1033

Lint [pb-1/day] 135 710

The B-Meson Factory PEP-II


Slac Site Photo

← Linac

← Fixed-TargetExperiments

← BABAR← SLD


Lumi curves

Daily and Integrated Luminosity, Oct 1999 - Aug 2004

Design


Best shift, no trickle

PEP-II Lumi

HER currentLER currentFrom the daily PEP-II protocols

Best shift, LER only trickleNov 2003

Best shift, double trickleMar 2004


Canada [4]U of British ColumbiaMcGill U MontrealU de MontréalU of Victoria

China [1]Inst. of High Energy Physics, Beijing

France [5]LAPP AnnecyLAL OrsayU Paris 6 et 7Ecole PolytechniqueCEA Saclay

Germany [5]RU BochumU DortmundTU Dresden U HeidelbergU Rostock

Great Britain [10]U of BirminghamU of BristolBrunel UniversityU of EdinburghU of LiverpoolImperial College LondonQueen Mary & Westfield CollegeRoyal Holloway U of LondonU of ManchesterRutherford Appleton Laboratory

Norway [1]U of Bergen

Russia [1]Budker Inst., Novosibirsk

Spain [1]Barcelona / Valencia

INFN PadovaINFN PerugiaINFN PisaINFN Roma INFN TorinoINFN Trieste

79 Institutes, 11 Countries, 608 Authors

e-

e+

The BABAR Collaboration

Italy [12]INFN BariINFN FerraraINFN Frascati INFN GenovaINFN MilanoINFN Napoli

Netherlands [1]NIKHEF Amsterdam

U of CincinnatiU of ColoradoColorado State UFlorida A&MHarvard UU of IowaIowa State ULBNL BerkeleyLLNL LivermoreU of LouisvilleU of MarylandU of MassachusetsMIT CambridgeU of MississippiMount Holyoke CollegeU of Notre DameOhio State UU of OregonU of PennsylvaniaPrairie View A&MPrinceton USLAC U of South CarolinaStanford UU of TennesseeU of Texas at AustinU of Texas at DallasVanderbiltU of WisconsinYale U New Haven

USA [38]SUNY AlbanyCaltech PasadenaUC IrvineUC Los AngelesUC RiversideUC San DiegoUC Santa BarbaraUC Santa Cruz

23 / 9 / 2004


detector picture


German Contributions to the BABAR Calorimeter

10 % of 6580 CsI(Tl) crystals

All photodiodes

Optimisation ofcrystal light yield

Mechanics of readout electronics

Lightpulser system for monitoring

Bhabha calibration

πo calibration

e identification


Direct CP Violation in B0 → K+π -

Tree and Penguin,

2 different weak phases:

CPV, if strong φ also differs.

d

Vub

d

b

s

u

ʉ

Wg

Vtsb s

uʉ

W

d dBABAR, PRL 93 (2004) 131801

227 M BB, A=[n(K-π+) -n(K+π -)] / [n(K-π+)+n(K+π -)], PID by DIRC (θC,nγ),

∆E = E*(Kπ) -√s/2, mES=√s/4 - p(Kπ)2,σ(∆E) = 27 MeV, σ(mES) = 2.6MeV.

Dominant Bg. e+e - →qq :

|cosθS(Kπ;rest)|<0.8

removes 80%.

Likelihood separation of

π+π -,K+π -,K-π+,K+K-, and bgusing ∆E, mES,2θC, Fisher.


Direct CP Violation in B0 → K+π– (2)

B0

B0

Likelihood fit gives

1606 ± 51 Kπ,

467 ± 33 ππ, 3 ± 12 KK,

consistent with measured BF.

A = -0.133 ± 0.030 ± 0.009 (4.2 σ).

More B0 than B0 decays.

First CP-violating observation

without any time information.

BELLE Aug. 2004

A = -0.101 ± 0.025 ± 0.005 (3.9 σ).

hep-ex / 0408100


Four Observed Types of CP Violation

1. CPV in K0K0 mixing: Re εK (not yet seen in B0B0 mixing)

2. CPV in mixing-decay interference: Im εK, sin2β(B→ccK), S(B0 →π+π-)

3. CPV in decays into one final state: Re ε‘, C(B0 →π+π-), A(B0 →K+π-)

4. CPV in decays into two final states: Im ε‘

Now Discussion of Type 2:


Measurement of time-dependent CP-Asymmetries

−Γ∆±

Γ∆ = ± ∆ ∆ ∆ ∆m, ( ) [1 sin cos ]

4 CP CP

tCP f d f df t e S m t C m t

Decay distributions f+ (f-) when tag = B0(B0) in Y(4S) → B0 B0

( ) ( )00LHd BmBmm −=∆

Asymmetry

λλ

−=

+

2

2

1 | |1 | |

CP

CP

CP

ff

f

C

λλ

=+ 2

2Im1 | |

CP

CP

CP

ff

f

S

+ −

+ −

−∆ = = ∆ ∆ − ∆ ∆

+( ) sin cos

CP CP CPf f d f df fA t S m t C m tf f

CPV parameter Type 3 CPV,or Type 1

000000 , BqpBBBqpBB HL −=+=

CP

CP

CP

CP

CP

CPf

ff

f

ff A

Apq

AA

pq

⋅⋅=⋅= ηλType 2 CPV

For fCP = J/ψ KS:λ = - e-i2β, C=0, S=sin2β

00 , BHfABHfA CPfCPf CPCP==


Measurement of time-dependent CP-Asymmetries (2)

( ) ( ) ( )( ) ( ) ( ) tt-t~t) msin(2sinD

/B/B

/B/Bt~A~

0000

0000

∆∆∆⋅∆∆⋅⋅=Ψ→Γ+Ψ→Γ

Ψ→Γ−Ψ→Γ=∆ ∫ dr

KJKJ

KJKJ

SS

SS β

4: Flavour Determination of the other B Meson (“tag”)

1, 2, 3: B Reconstruction into CP Eigenstate

Υ(4S) e+

βγ = 0.55

6: Determination of ∆t = ∆z/βγc

5: Determination of the fraction w of mistags

Dilution D = (1-2w) reduces observed asymmetry.

8: sin2β Fit to both Time Distributions

7: Determination of the ∆z reso-lution function


ϒ

flavour eigenstate, here from B0,decay at t1 „tags“ the flavour

of the other B at time t1.

Such events are very rare, o(10-6), therefore we use inclusive tagging for CPA measurements with now Q = ηtagD2 = 0.30.

A fully reconstructed event

CP eigenstate, decay at t2,either from B0 or from B0,

∆t = t2-t1.


Newest BABAR Results on Asymmetries in B→ccK

227 M BB, cc = J/ψ, ψ(2S), χc1, ηc with KS (ηCP = -1),

J/ψ with KL (ηCP = +1) and K0* (ηCP,eff = +0.51),

Q = 0.305 ± 0.004.

hep-ex / 0408127

βλ

= + ± ±= = ± ±

sin2 0722 0.040 0.023/ 0.950 0.031 0.013

.A A

KS KL

BELLE 2003: 0.733±0.057±0.028

WA: 0.726 ± 0.037 (19.5σ)


CP Asymmetries in B0 → φKφ

d

g

Vts

d

b s

ss

W

Pure penguin, expect λf = ηf e-2iβ

- ηf S(φ) = sin2β = 0.73, C (φ) =0.

KS

KL

BF = (7.6 ± 1.3 ± 0.5)10-6

BABAR, hep-ex / 0408072 227 M BB

114±12 KS, -ηS= +0.29±0.3198±18 KL, -ηS= +1.05±0.51

-ηS = +0.50 ± 0.25

C = 0.00 ± 0.23 ± 0.05

+0.07-0.04


CP Asymmetries in B0 → η‘K BF = (55.4 ± 5.2 ± 4.0)10-6

η‘

d

g

Vts

d

b s

ss

W

d

Vub

d

b

su

ʉ

W

Since uʉ in η‘ reached

by a tree, C(η‘) ≠0,

S(η‘) ≠ -sin2β possible:

BABAR, hep-ex / 0408090

819 ± 38 events

S = 0.27± 0.14 ± 0.03

≠ 0.73 with 3.0 σ

C = -0.21 ± 0.10 ± 0.03

227 M BB

only KS

→ π+π− and π0π0

η‘ → ρ0 γ and

η‘ → ηπ+π−,

η → γγ, π+π− π0


Summary on sin2β CP-Asymmetries

BELLE, all newBABAR, all new

2.4σ from s-penguin to sin2β (cc)

combined: 3.6 σ New Physics? Needs urgently more data.

2.7σ from s-penguin to sin2β (cc)


Measurements of the Angle α

É

¿

10

Vub*/Aλ3 Vtd/Aλ3

β

α

γ

Measurable in decaysB0,B0 → π+π-, π±ρ± and ρ+ρ-

with same tagged ∆t-depenent asymmetry as in B0,B0 → J/ψ KS

d

W

Vcb

d

b c

cs

J/ψ KS: Tree

A(∆t)=sin2β sin∆m∆t A(∆t) = Ccos∆m∆t + Ssin∆m∆t

if tree only: C=0, S=sin2α

if tree + penguin: C≠0, S=sin2αeff, models or Gronau-London for α-αeff.

d

Vub

d

b

dʉ

u

π+π-, π±ρ±, ρ+ρ-: Tree plus Penguin

W

d

g

Vtd

d

b d

ʉu

W


CP Asymmetries in B0 → π+π− BABAR, hep-ex / 0408089 227 M BB

C2 + S2 ≤ 1

Experiment Sππ Cππ = - Aππ

BABAR 2004 -0.30 ± 0.17 ± 0.03 -0.09 ± 0.15 ± 0.04

BELLE 2004 -1.00 ± 0.21 ± 0.07 -0.58 ± 0.15 ± 0.07

HFAG avg. -0.61 ± 0.14 -0.37 ± 0.11DisagreementScaled average

2.5 σ-0.61 ± 0.22

2.2 σ-0.37 ± 0.16

Even with scaled

errors there is

evidence for CP

violation in π+π−,

2.8 σ for type-2,

2.3 σ for type-3.


Gronau-London ππ Isospin Analysis PRL 65 (1990) 3381

requires B+ π+ π0, B- π - π0 rates,

t-dependent rates of tagged B0 π + π -, t-integrated rates of tagged B0 π0 π0

and B0 π0 π0

in order to determine θ = αeff - α.

2θ2/−+A

2/−+A00A

00A

00 ++ = AA

Measurement of B0B0 π0 π0 average gives only limit on θ .

BF(B0 → π+π−) = (4.6 ± 0.4) 10-6 and C give A+- and A+-,BF(B+ → π+π0) = (5.6 ± 0.6) 10-6 gives A+0,

BF(B0 → π0π0) = (1.51 ± 0.28) 10-6 gives limits on A00 and A00

α α ≤ o- 35 at 90% CLeff Much better situation in ρρ:


CP Asymmetries in B0 → ρ+ρ−

L.Roos (BABAR), Moriond (EW) 2004

122 M BB

vector-vector mode with 3 final

states, 2 with ηCP=+1, one with -1.

Results: BF = (30 ± 4 ± 5)10-6

flong = 0.99 ± 0.03

Dominated by ηCP=+1

Slong = -0.19 ± 0.33 ± 0.11

Clong = -0.23 ± 0.24 ± 0.14

B+ ρ+ρ0 BF = ( 26.4 ± 6.4 ) 10-6 (BABAR & BELLE)flong = 0.962 (BABAR & BELLE)

B0 ρ0 ρ0 BF < 1.1 10-6 (90% CL) BABAR new with 227 M BB

+0.049- 0.065

BABAR, hep-ex / 0408061


Gronau-London ρρ Isospin Analysis BABAR, hep-ex / 0408061

The ρ+ρ− asymmetry results

Slong = -0.19 ± 0.33 ± 0.11

Clong = -0.23 ± 0.24 ± 0.14

do not violate CP but give

very good information on α:

α = (96 ±10stat ± 4sys ±11GL+elw.pg)o

1σ

90%

É

¿

10β

α

γ

VtdVtb*/(-VcdVcb

*)VudVub*/(-VcdVcb

*)

At this moment, the fourbest constraints on the CKM matrix are Vud, Vcb,β from B → ccK, andα from B → ρ+ρ−.

d

γ, Zb

ʉ

ud

d


A Short Reminder of the CKM Matrix

νeL

e-L

Wgw

tL

b‘LW

gw

cL

s‘LW

gw

uL

d‘LW

gw

bVsVdVb

bVsVdVs

bVsVdVd

tbtstd

cbcscd

ubusud

⋅+⋅+⋅=

⋅+⋅+⋅=

⋅+⋅+⋅=

'

'

'

bVsVdVb

bVsVdVs

bVsVdVd

tbtstd

cbcscd

ubusud

⋅+⋅+⋅=

⋅+⋅+⋅=

⋅+⋅+⋅=

***'

***'

***'

( ) ( ).2/1,2/1

.0

1)1(2/1

)(2/1

22

***

23

22

32

ληηλρρ

ληρλλλλ

ηρλλλ

−⋅=−⋅=

=++

⎟⎟⎟

⎠

⎞

⎜⎜⎜

⎝

⎛

−−−−−

−−≈

tbtdcbcdubud VVVVVV

AiAA

iAV

Vij describes quark mixing as

consequence of Higgs

couplings to quarks. If Vij ≠ Vij*,

Higgs couples differently

to q and q and produces CPV.


ckmLfit-0405-4

É¿ Fit to Measurements of Vub, Vtd, εK, and sin2β

εK sin2β

Vtd

Lfitckm

Vub

ckmLfit, May 2004


ckmLfit-0410-1

Including the newest BABAR measurements of β and α

εK sin2β

Vtd

Lfitckm

Vub

ckmLfit, October 2004


ckmLfit-0410-1 with fit results

Including the newest BABAR measurements of β and α

εK sin2β

Vtd

Lfitckm

Vub

γγ

λ = |Vus|= 0.2240 ± 0.0038, Aλ2 = |Vcb|=0.0416 ± 0.0008,

Aλ3√ρ2+η2 = |Vub|=0.0038 ± 0.0003, γ = 60o ± 11o.

γ

ckmLfit, October 2004


Γ(B → Xcℓν)

BABAR‘s Newest Vcb Determination PR D 69 (2004) 111103

PR D 69 (2004) 111104

PRL 93 (2004) 011803

Two measurements of moments in

inclusive decays B → Xcℓν

m(Xc)

E(ℓ)

HQE:

q q

Vcb

bνℓ

cW

1

g n qn q Quark level rate

with and HQE parameters mb,mc,µπ,µG,ρD, and ρLS . These

parameters are not calculated but fitted to measurements of 20 moments

of dΓ/dEℓ and 28 of dΓ/dmX. These 48 moments are different functions

of the same 6 parameters. With τB as only external input, the fit determines

mb,mc,µπ,µG,ρD,ρLS,and |Vcb| and BF(B → Xc ℓν) = Γ(B → Xc ℓν) . τB .


B → Xeν

ϒ(4S) → B B → e± e± X, 52 M BB

a) e+(p)e-(>1.4GeV)e-(p)e+(>1.4GeV)

b) e+(p)e+(>1.4GeV)e-(p)e-(>1.4GeV)

a)

b)

(1) Lepton Energy Moments

As function of Emin, determine( )

( )

( ) ( )[ ]

( ) ( )[ ] dEdEdEME

MEM

dEdEdEME

MEM

dEdEdE

MEM

dEdEdEM

E

E

E

E

∫

∫

∫

∫

Γ−=

Γ−=

Γ=

Γ=

min

min

min

min

3min1

0min3

2min1

0min2

0min1

min0

1

1

1


(2) Hadronic-Mass Moments ϒ(4S) → Breco Brecoil → Breco ℓνX

89 M BB, Observed mass of the X system for

Eℓ >0.9GeV Eℓ >1.6GeV Correction

<mXn>obs → <mX

n >true

using Monte Carlo

As function of Emin, determine

for n = 1, 2, 3, 4.

( ) ( ) ( )X

XX

X

nXn dm

dmEEddm

dmEEdmEM ∫∫

>Γ>Γ= minmin

minll


Mass

Moments

Energy

Moments

Because of high correlations, only 27 of the 48 moments enter into the fit.

χ2 =15.0 for NDoF =20. Fit results in Uraltsev‘s „kinetic scheme“:

(3) Moment Results and HQE Fits

Emin (GeV)

mb(1 GeV) – mc(1 GeV) = (3.44 ± 0.03exp ± 0.02HQE ± 0.01αs) GeV

GeVGeVmGeVGeVm

eXBBrV

c

b

c

cb s

)02.006.007.018.1()1()02.004.005.061.4()1(

)%06.016.061.10()(10)6.02.04.04.04.41(||

s

s

SL

HQEexp

HQEexp

HQEexp

3HQEexp

α

α

α

ν

±±±=±±±=

±±=→×±±±±= −

Γ ± 2.0%


⎟⎟⎠

⎞⎜⎜⎝

⎛⎥⎦

⎤⎢⎣

⎡⎟⎟⎠

⎞⎜⎜⎝

⎛ΓΓΓΓ

−⎟⎟⎠

⎞⎜⎜⎝

⎛=⎟⎟

⎠

⎞⎜⎜⎝

⎛=⎟⎟

⎠

⎞⎜⎜⎝

⎛∂∂

2

1

2221

1211

2221

1211

2

1

2

1

2 ψψ

ψψ

µψψ i

mmmm

ti ik

CPT- and ∆Γ-Independent Measurement of B0B0 Mixing

mik and ΓikHermitean

( )( ) .2/,)(

,2/,)(000

000

HHHt

H

LLLt

L

mieBqpBtB

mieBqpBtBH

L

Γ+=⋅−=

Γ+=⋅+=−

−

γ

γγ

γ

If CPT, m11=m22, Γ11=Γ22, andCPV(Type1)1 ⇔≠

pq

sin2β analysisassumes ΓL= ΓH

If CPT violated, also two eigenstates BL, BH

[ ][ ] t

H

tL

H

L

eBqBptB

eBqBptBγ

γ

δδ

δδ−

−

⋅⋅+⋅−⋅−⋅=

⋅⋅−⋅+⋅+⋅=000

000

2121)(

2121)(symmetry CPT with as

2/2/

1212

2121

Γ−Γ−

=mm

pq

( )

( ) ( ).2/Im

,/Re,

2/i2/i,2/,2/

,Im211,/Re2,2

11221122

12

1212121212

mmm

mmmmm

mpqmmmmmm LHLH

∆Γ−≈∆≈

∆Γ−∆Γ−

=Γ−Γ=Γ−=

Γ−≈Γ≈Γ−Γ=∆Γ≈−=∆

δδδδδδδδδ ,

2/i2/i

∆Γ−∆Γ−

=mm δδδ


For pairs Btag Brec from the Y(4S) we have with ∆t = trec-ttag:

( ) ( )⎥⎦

⎤⎢⎣

⎡∆∆⋅+⎟

⎠⎞

⎜⎝⎛ ∆

∆Γ⋅−∆∆⋅+⎟

⎠⎞

⎜⎝⎛ ∆

∆Γ⋅∝ −+∆Γ tmststmctc

tN sinIm

2sinhRecos

22cosh

2e

dd t-

Coefficients c+,c-,s given as functions of Af, |q/p|, δ, λf = qAf/pAf , e.g.:BtagBrec

B0 B0

B0 B0

B0 B0

B0 B0

B0 BCP

B0 BCP

c+

f may be flavour

(D*π...)[„Bflav“]

or CP eigenstate

(J/ψ KS...)[„BCP“]

0

0,2

0,4

0,6

0,8

1

-8 -6 -4 -2 0 2 4 6 8

unmix(0)mix(0)unmix(0.4)mix(0.4)

N BtagBflav

∆Γ/Γ =0 and 0.4

∆t [Γ-1]0

0,2

0,4

0,6

0,8

1

-8 -6 -4 -2 0 2 4 6 8

Btag(0)Bbartag(0)Btag(0,4)Bbartag(0,4)

N

∆t [Γ-1]

BtagBCP

sin2β=0.7same ∆Γ/Γ


Effects of ∆Γ and CPT Violation on dN/d∆t :

Dt(Flavour-tag and CP-rec)

0

0,2

0,4

0,6

0,8

1

-8 -6 -4 -2 0 2 4 6 8

Btag(z=0,DG=0)Bbartag(z=0,DG=0)Btag(z=0.4,DG=0)Bbartag(z=0.4,DG=0)Btag(z=0.4i,DG=0)Bbartag(z=0.4i,DG=0)Btag(z=0,DG=0.4)Bbartag(z=0,DG=0.4)

N

∆t [Γ-1]

Re δ: - + + -Im δ: + + - -∆Γ: - - - -

BtagBCP

sin2β = 0.7

∆Γ/Γ=0.4

δ = - 0.2

δ = - 0.2 i


BABAR analysis with 88 M BB PRL 92 (2004) 181801

flavour samples

D(*)π, D(*)ρ, D(*)a1, J/ψK*0

20 600 events

CP samples

J/ψK0S, ψ(2S)K0

S, χc1K0S. J/ψK0

L

1 200 events


BABAR results on ∆Γ and δ

|q/p| = 1.029±0.013 ±0.011

Dileptons:0.998±0.006±0.007Combined: 1.005±0.008

No CPV observedin mixing.

sign(Reλ).∆Γ/Γ =-0.008±0.037±0.018|∆Γ/Γ| < 0.08 (90% CL)

|δm/Γ| < 0.05 (90% CL)

δΓ/Γ ∈ [-0.08, 0.02] (90%)

and:Neither ∆Γ/Γ nor CPT violation influence BABAR‘s sin2β.

2|δ|


BABAR Highlights in Charm Physics

m(Dsπ0), GeV

DsJ(2317)

PRL 90 (2003) 242001

DsJ(2458)all Dsπ0γ

Ds*π0

Ds(2317)γ

PR D 69 (2004) 031101

Limit on D0D0 Mixing:

D*+ → D0 π+

→ K-π+

→ K+π- 3.6.10-3

→ D0 → K+π- <1.6.10-3

PRL 91 (2003) 171801


BABAR Highlights in Tau Physics

80 M ττ PRL 92 (2004) 121801

Limits on Neutrinoless Decays: Tau Lifetime:

71 M ττ A. Lusiani (BABAR), TAU04

ττ = (289.4 ± 0.91 ± 0.90) fs


Radiative Return (ISR)

γISR

mππ < Ecm < mY4S

e+e- → π+ π− π0 γ

B(J/ψ →3π) = (2.18±0.19)% BABAR prelim.(1.50±0.20)% PDG (2.10±0.12)% BES 2003

e+e- → π+ π− π+ π− γ

B(J/ψ →π+π−π+π−) =(3.61±0.26 ±0.26)⋅10-3 BABAR prelim.(4.0±1.0) ⋅10-3 PDG


The End

BABAR takes data since October 1999

244/fb recorded, best day 710/pb, (ARGUS 1982-92: 500/pb).

Software problems essentially solved, analysis worldwide

(prompt reconstruction in Padova, skimming in Karlsruhe)

100 Publications in PR-D and PRL

No „New Physics“ discovered, CP Violation is St. Model CPV

CP Violation continues to be the main topic

Precision measurements of CKM matrix elements continue to be

very important for testing if CPV contains New Physics, |Vub|

2.7 σ hint for New Physics in CPV in ssK penguin decays

Strong motivation for studies of a Super-B-Meson-Factory

Come to D. MacFarlane‘s talk here on 10 November

Some Highlights of the BABAR Experiment - TU Dresdenschubert/talks/0410-zeuthen.pdf · 2004. 10....

Documents

Transcript of Some Highlights of the BABAR Experiment - TU Dresdenschubert/talks/0410-zeuthen.pdf · 2004. 10....