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CDF 実験の最新結果. 筑波大学 佐藤構二 6/23/2011 首都 大学 東京. Contents. Introduction Tevatron Accelerator, CDF and D0 Detectors. Top Physics Direct Search for Higgs Bosons Standard Model Higgs MSSM Higgs Bosons B Physics Exotic Physics Searches at CDF Summary. Introduction. Tevatron Run II. - PowerPoint PPT Presentation
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CDF実験の最新結果
筑波大学 佐藤構二6/23/2011首都大学東京
Contents
• Introduction– Tevatron Accelerator, CDF and D0 Detectors.
• Top Physics• Direct Search for Higgs Bosons
– Standard Model Higgs– MSSM Higgs Bosons
• B Physics• Exotic Physics Searches at CDF• Summary
Introduction
Tevatron Run II First collision in Run 0
was in 1985 (26 years ago!!)
collisions at =1.96 TeV (1.8 TeV in Run I).
Run II started in Summer 2001.
Collisions at world highest energy until Nov 2009.
Two multi-purpose detectors for wide range of physics studies.
Tevatron Run II — Luminosity Status
• Typical Peak Luminosity : 4 1032 cm2 s-1.• Delivers 70 - 80 pb-1/week.• Integrated Luminosity: 11.3 fb-1
– Recorded by CDF: 9.5 fb-1.• Recent CDF analyses typically use up to ~7 fb-1.• Typical data taking efficiency of CDF: ~ 85% No significant drop after 10 years of running!!
(CDF)
Tevatron Plans• 2010: strong discussion on 3 year extention of Tevatron up to FY2014.• LHC was planning to shutdown a whole year in 2012.• Tevatron was expected to compete with LHC in SM Higgs searches.
20112.4σ in MH<180 GeV
2014”>3σ Evidence”In 100<MH<180 GeV の
Summer 2010Dataset
SM Higgs Discovery Potential of Tevatron (2010 Projection)
Recommendation 1: The panel recommends that the agencies proceed with a three-year extension of the Tevatron program if the resources required to support such an extension become available in addition to the present funding for HEP. Given the strong physics case, we encourage the funding agencies to try to find the needed additional resources. (October 26, 2010, P5 report)
Tevatron Termination
Tevatron Termination
Tevatron will close at the end of FY2011 (Sep 30, 2011)
Tevatron v.s LHC
TEVATRON LHC (current) LHC (design)
Particles Collided p - pbar p - p p - p
CM Energy (TeV) 1.96 7 14
Inst. Lum (cm-2 s-1) Record 4.05 x 1032 1.2 x 1033 1 x 1034
Integ. Lum (fb-1) 11.5 1.1 --
Collider Detector at FermilabMulti-purpose detector
Tracking in 1.4 T magnetic field. Coverage |h|<~1.
Precision tracking with silicon. 7 layers of silicon detectors.
EM and Hadron Calorimeters. sE/E ~ 14%/E (EM). sE/E ~ 84%/E (HAD).
Muon chambers.
Collider Detector at Fermilab~600 physicists from
12 nations and 61 institutionsMcGill Univ.Univ. of Toronto
Argonne National Lab.Baylor Univ.Brandeis Univ.UC DavisUC Los AngelesUC San DiegoUC Santa BarbaraCarnegie Mellon Univ.Univ. of ChicagoDuke Univ.FermilabUniv. of FloridaHarvard Univ.Univ. of IllinoisThe Johns Hopkins Univ.LBNLMITMichigan State Univ.Univ. of MichiganUniv. of New MexicoNorthwestern Univ.The Ohio State Univ.Univ. of PennsylvaniaUniv. of PittsburghPurdue Univ.Univ. of RochesterRockefeller Univ.Rutgers Univ.Texas A&M Univ.Tufts Univ.Wayne State Univ.Univ. of WisconsinYale Univ.
JINR, DubnaITEP, Moscow
Univ. Karlsruhe
Univ. of Geneva
Glasgow Univ.Univ. of LiverpoolUniv. of OxfordUniv. College London
Univ. of Bologna, INFNFrascati, INFNUniv. di Padova, INFNPisa, INFNUniv. di Roma, INFNINFN-TriesteUniv. di Udine
IFAE, BarcelonaCIEMAT, MadridUniv. of Cantabria
LPNHE, Paris
KHCL
KEKOkayama Univ.Osaka City Univ.Univ. of TsukubaWaseda Univ.
Academia Sinica
USA Canada
Russia
Germany
Switzerland
UK
Italy
Spain
France
Korea
Japan
Taiwan
D0 Detector
• Silicon detector covering up to |h|<3 rapidity
• Compact scintillating fiber tracker• 2.0 Tesla axial B field• Hermetic U/liquid Ar calorimeter• Extended muon coverage
Multi-purpose detector
Top Physics
Top Physics at Tevatron• Top quark was observed at
TEVATRON in 1995.• Top is still the least studied
observed particle.• Any deviation from SM might
suggest new physics!!• Top mass is unexpectedly heavy
~35mb.– Special role in EWSB? p
p tb
W-
q
q’
t b
W+
l+
n
X
Production cross-section
Resonance production
Production kinematics
ttbar Spin correlation
Top Mass W helicity
|Vtb|
Branching Ratios
Rare/non SM Decays
Anomalous Couplings
CP violation
Top lifetime
Top Charge
Top Width
_ _
_
_
BR (%) Bkgd.
Di-lep. 5 Low
L+jets 30 Moderate
All had. 44 High
+X 21 -ID hard
ttbar decay modes:
Top Pair Cross Section (L+jets)
~85% ~15%
• Top quark is mostly produced in pairs at Tevatron.
Event selection:• 1 lepton Pt>20, |h|<2.0• MET>25• ≥3 jets with Pt>20 , |h|<2.0 • ≥ 1 jet b-tagged
stt = 7.14 ± 0.34 (stat.) ± 0.58 (syst.) ± 0.14 (theory) pb (4.3 fb-1)
stt = 7.04 ± 0.34 (stat.) ± 0.55 (syst.) ± 0.43 (lumi.) pb
The dominant luminosity systematic can be canceled out by measuring ratio stt /sZ.
s(NLO) = 7.4 +0.5-0.7 pb
Top Pair Cross Section Summary• Cross section is sensitive to both
production and decay anomaly.• The difference between different decay
modes might indicate new physics.• CDF measures xs with various decay
modes/methods, and the results are consistent with SM.
Forward Backward Assymmetry• CDF Analysis in L+jets channel.• Related to qqbar initial state - specially
interesting at Tevatron.• Interference terms between LO and NLO
diagrams ~5% asymmetry.
tt
q
q
g
g
b
b
W+
W-
l+
n
q’
q
q: lepton chargeyh: rapidity of hadronic top
AFB = 15.8± 7.5 % AFB
SM = 5.8 ± 0.9 % consistent
5.3 fb-1, Summer 2010
Mttbar Dependence of AFB in L+jets at CDF
Mttbar Distribution:
High MassRegion
Low MassRegion
Low Mass Region
Mttbar = 450 GeV
High Mass Region
5.3 fb-1, Winter 2011 update
AFB = 47.5± 11.4 % AFB
SM = 8.8 ± 1.3 % ~3.3 σ deviation
AFB = -11.6± 15.3 % AFB
SM = 4.0 ± 0.6 % consistent
AFB Measurement in L+jets at D0• D0 analysis in L+jets.• Asymmetry defined as:
Dy = ytop – yanti-top
AFB = 8± 4(stat) ±2(syst) %AFB
SM = 1 +2-1 %
Thought not as significant, same trend as CDF!!
4.3 fb-1, Summer 2010
AFB Measurement in Dilepton at CDF
Lepton Dy distribution Full Reconstruction Dy distribution
AobsFB= 43 ±15 (stat) ±5 (syst) %
ASMFB = 6 ±1 % 2.3s deviation
5.1 fb-1, Winter 2011
Mttbar Dependence of AFB in Dilepton at CDF
Mttbar Distribution:
High MassRegionLow Mass
Region
Low Mass Region
Mttbar = 450 GeV
High Mass Region
5.1 fb-1, Winter 2011
AFB = 21.2±9.6 (stat only) % AFB
SM = -4.0 ± 5.5 %
AFB = -10.4±6.6 (stat only) % AFB
SM = 0.3 ± 3.1 %
Single Top Production• Top quark is sometimes singly produced Tevatron.
0.884±0.11 pb (NLO)
1.98±0.25 pb (NLO)
• 1 lepton, MET, 2 or 3 jets• S/B separation by Matrix Element (ME)
Signal ME bkgd ME
st+s-chan = 2.5 +0.7-0.6 pb (3.2 fb-1)
4.3 s effect
t-channel
Vtb
Vtb*
s-channel
Vtb
Vtb*
5.0 s observation!!
t-channel
Vtb
Vtb*
Single Top Combined Result
st+s-chan = 2.3 +0.6-0.5 pb
st-chan = 0.8±0.4 pbss-chan = 1.8+0.7
-0.5 pb
|Vtb| = 0.91 ± 0.11 (exp.) ± 0.07 (theory)
s-channel
Vtb
Vtb*
0.884±0.11 pb (NLO) 1.98±0.25 pb (NLO)
(2010)
|Vtb| > 0.71 at 95% C.L.
W Mass MeasurementCDF, 200 pb-1 (2007)
D0, 1 fb-1 (2009)
Best single measurement of the time. Best single measurement!
W Mass Uncertainty Future Projection
CDF working on 2.3 fb-1 data
W Mass World Average
Top Mass Measurement in L+jets Events (CDF)
t
tq
q
g
g
b
b
W+
W-
l+
n
q’
q15% 85%
100%
100%
Controls background by a Neural Net Discriminant:
Matrix Element
Detector Response Func.
x: parton level momentay: measured momenta
PDFs
2-D likelihood Fit to data :
In-situ JES calibration
1-btag 2>b-tag
Background 261.8 ± 60.6 28.0 ± 9.6’
Top signal 767.3 ± 97.2 276.5 ± 43.0
Observed Data 1016 247
mt = 173.0 ± 0.7 (stat.) ± 0.6 (JES) ± 0.9 (syst.) GeV/c2
= 173.0 ± 1.2 (total) GeV/c2 Best single measurement, 0.7% precision!
Top Mass World Average
Top Mass Uncertainty Future Projection
Constraint to SM Higgs Mass (Jul 2010)
30Mtop = 173.3 ± 1.1 GeV/c2
MW = 80.399 ± 0.023 GeV/c
Precise W and Top Mass measurements constrains the SM Higgs Mass due to the radiative correction:
mH < 158 GeV @ 95% CL (mH = 89.0 +35/-26 GeV) mH < 185 GeV @ 95% CL including LEP2 direct search limit
Constraint to SM Higgs Mass (Jul 2010)
31
mH < 158 GeV @ 95% CL (mH = 89.0 +35/-26 GeV)Mtop = 173.3 ± 1.1 GeV/c2
MW = 80.399 ± 0.023 GeV/c2
In 2003:Mtop = 178.0 4.3 GeV/c2
MW = 80410 32 MeV/c2Mhiggs < 260 GeV/c2 (95% C.L.)
Progress due to the TEVATRON Run II Results
Precise W and Top Mass measurements constrains the SM Higgs Mass due to the radiative correction:
Direct Search for Higgs Bosons
Production Cross Sections
recently observed
SM Higgs Properties at Tevatron
bb WW• mH<135 GeV (low mass):
– gg→H→bb is difficult to see.– Look for WH/ZH with leptonic vector boson decays.
• mH>135 GeV (high mass):– Easiest to look for H→WW with one or two W
decaying to lepton.
WHlbb (low mass)• S/B separation by NN.• Four tagging categories, using 3 algorithms
(including NN tagger).• NN based b-jet energy correction
NN Outputs:
2 tag 1 tag
Observed upper limit4.5 x σ(SM)(@115 GeV)
l
l
• 3 b-tag categories with 2 algorithms.• S/B separation by NN.• Improved lepton coverage with new
loose muon category.• Dominant backgrounds:
– Z+jets, top, diboson
ZH ll+bb (low mass)
(mH=120 GeV)
NN Outputs:
Observed upper limit6.0 x σ(SM)(@115 GeV)
WH/ZHMET+bb (low mass)• Target process: ZHnnbb
– Also complementary to WHlnbb search.
• 3 b-tag categories with 2 algorithms.• S/B separation by NN.• Dominant backgrounds:
– QCD with MET miscalculation– W/Z+jets, top, diboson
(mH=115 GeV)
2 tag 1 tag
Observed upper limit2.3 x σ(SM)(@115 GeV)
H WW*l+ l- (high mass)• Opposite Sign 2 leptons.
– Lepton acceptance improved by using isolated tracks.• S/B separation by NN.
– Matrix element calculation result input to NN.• Dominant background
– DY, Diboson, top• Independently analyses OS/SS 2 leptons + 1/2 jets events to include WHWWW and VBF HWW signal inacceptance.
Observed upper limit :1.08 x σ(SM)(@165 GeV)
Updating for Winter 2011…
Summary of SM Higgs Searches at CDF
SM HiggsCDF and D0 Combined Limits
CDF Combined: D0 Combined:
SM HiggsTevatron Combined Limit
95% CL exclusion : 158 < mH <175 GeV mH<110 GeV (LEP2: mH<114.4 GeV)
SM Higgs Search –competition with ATLAS experiments, March 2011
Tevatron and LHC Summer 2011 Projection
Tevatron Summer 2011~ 8fb-1 / exp.
Tevatron:Exclusion of Mh<180 GeV
ATLAS:Exclusion of 130<Mh<450GeV
Results will be shown in ~1 month!!
Search for MSSM Higgs • Extended Higgs sector in SUSY models
– f = (H0, A0, h0) and H±
• Higgs coupling enhancement at large tan :b– Large increase (×~tan2b) in production cross sections
compared to SM: ggf, gbbf• for MA>100 GeV.
– Br(f )~9%tt– fbb~90%
Useful search modes at Tevatron:• f ττ• f + b ττ + b• f + b bb + b
MSSM ftt• Both experiments analyzed τe τhad, τμ τhad,
τeτμ channels (Opposite Sign)CDF 1.8 fb-1 (2007)
τe τhad+τμ τhad+τeτμ
D0 2.2 fb-1 (2008)
MSSM f tt Tevatron Combination
Combined, 2010
MSSM fbbbb at CDF• Analyze events with 3 b-tagged jets.• Utilizes trigger-level b-tagging.• Fully data-driven multi-jets backgrounds.• Define a flavor separator based on Mvtx for improved
background understanding.
~ 2s deviation from background at ~140 GeV
Di-jet mass, m12 of the leading 2 jets: 2.2 fb-1
MSSM fbbbb at D0• Analyze events with 3 b-tagged jets.• Subdivide candidates into 3- and 4-jets samples.• S/B separation by Likelihood Discriminant.
Likelihood Discriminant:
Di-jet mass:
Upper Limit on Cross Section:
Working on fbbbb TEVATRON combination this summer!!
MSSM fbttb at D0• A new search channel!!• Search in bτμτhad channel.
– Event selection: Isolated m, τhad, MET and a b-tagged jet.• Improve S/B separation using NN-based discriminant.• Dominant Bkg: Z+jets, ttbar, multi-jets.
Reconstructed Higgs Mass (GeV) NN-based Discriminant Upper Limit on Cross Section
Mjj in W+2jets events
Event Selection - Mjj in W+2jets events• 1 e/m: Pt>20 GeV, | |h <1.0• MET>25 GeV to ensure there was a neutrino• 2 jets: Et>30 GeV, |h|<2.4
– (cone size R=0.4 at CDF, R=0.5 at D0)
• Mt(e/m, MET)>30 GeV• Ptjj>40 GeV
• Dhjj<2.5• Df(MET, j1)>0.4
• Thresholds (especially the jet Pt cut) were set high in order to focus on the high dijet invariant mass range.
Mjj Distribution at CDF (4.3 fb-1)
Phys.Rev.Lett.106:171801 (2011)“Invariant Mass Distribution of Jet Pairs Produced in Association with a W boson in ppbar Collisions at sqrt(s) = 1.96 TeV”
• 3.2s deviation from SM.• Corresponds to 4 pb.
March, 2011
Mjj Distribution at CDF (7.3 fb-1)
• 4.8 s deviation from SM.Preliminary update in June 2011.
D0 follow up (4.3 fb-1)
DR(j,j) Distributions
D0 fluctuates the fraction of gg/qg/qq ingredients of the W+2jets MC sample (ALPGEN), while CDF simply trusts the fraction given by ALPGEN.
B Physics
B Production at Tevatron
• Large production rates ~10mb– Ο(100) B bosons every minutes!!– e+e-(4S)B experiments ~1.1nb– Not just BL
• CDF employs displaced-track trigger (SVT), and can collect all-hadronic finial states.
sOscillation (2006)
)cos1(2
1)(prob 00 tmeBB s
tss
Frequency ms~|Vts |2
measurement gave a Strong constraint on the CKM matrix (orange band).
𝐵𝑠→𝜇𝜇
FCNC decay is heavily suppressed in the Standard Model.
SM prediction:
SUSY scenarios boost the branching ratio by up to 100 times.
(3.7 fb-1)
Vertex displacement Candidate track isolation
S/B separation by Neural Net with 7 variables Dimuon mass in signal rich regions
BR( Bd → μμ ) < 7.6x10-9 @95% CL
BR( Bs → μμ ) < 4.3x10-8 @95% CL BR( Bs → μμ ) < 5.1x10-8 @95% CL (D0 6.1 fb-1)
World best limit
Prospect
We are HERE!!
CDF is updating the analysis this summer with 8 fb-1 of data!
Expected to give strong constraint on mSUGRA parameters.
CP Violation in
Bd unitarity triangle Bs unitarity triangle
Decay rate ~ +2
New physics?
CP Violation in (2)
CP Violation in (3)
CP Violation in (4) candidates:
Unbinned likelihood fit to data:
CP Violation in (5)• Previous result from July 2009 was:
2.1s deviation from SM
CP Violation in (6)
May 2010
Consistent with SM.~1s deviation.
Rare Decay
• Could be enhanced by Flavor Changing Neutral Current
New particle could appear in the loop ()
, Branching Ratio Measurements
BaBar Belle CDF (4.4 fb-1)
)
)
--- ---
𝐵→𝐾 ±𝜇𝜇 𝐵→𝐾 ∗(→𝜋±𝐾∓)𝜇𝜇 𝐵→𝜙𝜇𝜇
∼9𝜎 ∼10𝜎 ∼6𝜎
×𝟏𝟎−𝟔World best measurement
Observation
Forward-Backward Asymmetry
• Measure the F-B asymmetry as a function of
F-B Asymmetry Result
• Consistent with SM so far.
, Nov 2009
𝐽 /𝜓
Υ
F-B Asymmetry Result (2)
• Each experiment is consistent with SM within uncertainty.
• Is there a common trend off the SM prediction?• CDF is updating the result with 7 fb-1 data.
Babar: PRD79,031102(2009)Belle: PRL103,171801(2009)
CDF 4.4 fb-1
Exotic Physics Searches
Search for Diphoton Resonance (5.4 fb-
1)• Select events with 2g’s with Et>15 GeV.• Main background: SM 2g and jets faking photons.
Result consistent with SM.Excess around 200 GeV: 13% probability.
Limit on Randall-Sundrum Graviton Production Cross Section:
Dielectron Resonance Search in 2009 (2.3 fb-1)
• A 2.5s excess around Mee=240 GeV mass region!!
Dielectron Resonance Search in 2011 (5.7 fb-
1)• 1 electron with Et>20 GeV, |h|<1.1.• Opposite sign second electron with
Et>20 GeV, |h|<2.8.
Previous excess ~240 GeV is reduced to a 1.7s effect.
Limit on Randall-Sundrum Graviton Production Cross Section:
R-S Graviton Mass Limit (ee+ ggcombined):
Dimuon Resonance Search (4.6 fb-1) • Two opposite sign muons with
Pt>30 GeV, |h|<1.1.
Invariant mass of dimuon
Limits on Z’
W’ Search (5.3 fb-1) • 1 electron with Et>25 GeV, |h|<1.1.• MET>25 GeV.
Mt Distribution:Observed Cross Section Limit:
MW’ > 1.1 TeV (95% C.L.)
g+jets+MET Topology• Model independent search.• 1 electron w/ Et>30 GeV, |h|<1.1.• Jets w/ Et>15 GeV, |h|<3.0.• MET>20 GeV.
• Scanned kinematic plots in 1 and 2 jet bins for abnormaly.
Consistent with SM.MET: Eg: M(j1, )g : Ht:
Multijets Resonance• Model independent search for ppbarQQ3j+3j.• 6 jets with Et>15 GeV, |h|<2.5.• QCD background parameterized with 5 jet events.
• Separate 3-jet combinations that are potentially correlated using diagonal cut.
• Optimize cut for each point.• Set limit for RPV gluino scenario:
Mass below 144 GeV/c2 excluded.
Search for b’• Assume br(b’tW)=100%.• Search for : • 1 e/m with Pt>20 GeV, |h|<1.1.• MET>20 GeV.
Jet Multiplicity:Cross section Limit:
Mb’ > 372 GeV/c2 (95% C.L.)
Mb’ =350 GeV
Search for t’• t’t’WqWq(ln)q(qq)ql+4jets.• 1 e/m with Pt>25 GeV, |h|<1.1.• MET>20 GeV.• 4 jets with Et>20 GeV, |h|<2.0.
Limit on Cross Section:
Reconstructed t’ mass:
Mt’ > 335 GeV (95% C.L.)
Mt’ = 400 GeV
Summary (1)• Tevatron is running smoothly.
– Integrated delivered luminosity: 10.4 fb-1
– Will be terminated at the end of September, 2011.• Dijet invariant mass anomaly in W+2jets events
– D0 didn’t see the same excess.– Careful investigation ongoing.
• Top Physics– Mass measurement at 0.6% precision.
• mH < 158 GeV @ 95% CL.– Interesting deviation from SM in ttbar forward-backward
asymmetry:• >2s deviation from SM in L+jets and dilepton analyses at
CDF.• >3s deviation in high Mttbar region in L+jets.• This analysis is unique to ppbar initial state. Cannot
reproduce in LHC.
• Higgs Search– SM Higgs Mass Region 158<Mh<175 GeV excluded (95% C.L.)– Main channels have very elaborate analyses.– Fierce competition expected with LHC experiments during
Summer 2011.• Exotic Physics Searches
– A wide variety of interesting search analyses.– So far, consistent with SM.
• B Physics– We have very interesting B physics program ongoing.
• CDF and D0 keep working hard to produce interesting physics results!!
Summary (2)
Backup
AFB in L+jets by Lepton Type
Prediction
AFB by Fine Mass Bins
• Prediction:
• Data
AFB by Fine Jet Bins
AFB in Dilepton By Lepton Type at CDF
W Mass Syst. Uncertainty
MTM3 Top Mass Measurement
log Lsig(mt, JES) = Σi[log Li(mt, JES) - fbg(qi) log Lavg(mt, JES | background)]
SM combined channels
MSSM f tt Tevatron Combination
MSSM fbbbb at CDF
Tevatronの今後
2011年末MH<200 GeVの全質量領域で 2.4σ
発見に必要なルミノシティの予想値:
2014年末100<MH<180 GeVの質量領域で”>3σ Evidence”
Tevatronは 2014年までの実験延長を模索している(LHCとの兼ね合い)。
7 TeVでのATLASの棄却能力
• 3 探索モードのみの合成:– H→WW→lνlν– H→ZZ→4l– H→γγ
• 1fb -1( 2011 年末に相当)のデータ量で、 135-188 GeVのヒッグス質量を棄却することができる。
2011年の状況
×1.3
リミットが√ Lumでスケールするならば、2011年の Tevatronは、√ (10fb-1/5.9fb-1)~1.3だけリミットを下げる。⇒ 上の赤線を跨ぐところが 2011年の質量棄却領域になる。⇒ 142- 184 GeVの領域を棄却できる。
ATLASは、 2011年に 135-188 GeVのヒッグス質量を棄却できる。それまでに検出器の校正・理解は十分できるか?解析手法はスムーズに確立できるか?CMSとの足し合わせはすぐにできるか?
BsBsOscillation Motivation
from Dmd
from Dmd/DmsLower limit on Dms
md~|Vtd |2 (BdBd Oscillation)
constrains a side of unitarity triangle.
By taking ratio md / ms we can rule out theoretical uncertainties and tighten the constraint on unitarity triangle.
Orange band in the plot: the upper limit on |Vtd| is set by the lower limit of ms.
)cos1(2
1)(prob 00 tmeBB s
tss
Frequency ms~|Vts |2
BsBsOscillation Result (355 pb-1)• Oscillation not yet observed.• Frequency scan of the oscillation:
– Fit for A for each ms.– A=1 for true ms.
• Results will be updated very soon!– With double data (765 pb-1).– Newly developed same-side kaon
flavor tagging will improve eD2 by a factor of ~3!!
– Overall eD2=1.6% in current analyses.
ms > 8.6 ps-1 (95% CL limit)
Frequency scan, semileptonic andhadronic channels combined :
CP in
3.2 +/- 1.4%