Search for Super-Penguins: CP Violation in B0->K+K-K0

Slides:



Advertisements
Similar presentations
Measurement of  David Hutchcroft, University of Liverpool BEACH’06      
Advertisements

23, June, 2005Beauty2005, Assisi, Italy Electroweak Penguin decays at Belle Akimasa Ishikawa KEK.
Measurements of the angles of the Unitarity Triangle at B A B AR Measurements of the angles of the Unitarity Triangle at B A B AR PHENO06 Madison,15-18.
6/2/2015Attila Mihalyi - Wisconsin1 Recent results on the CKM angle  from BaBar DAFNE 2004, Frascati, Italy Attila Mihalyi University of Wisconsin-Madison.
Charm results overview1 Charm...the issues Lifetime Rare decays Mixing Semileptonic sector Hadronic decays (Dalitz plot) Leptonic decays Multi-body channels.
EPS, July  Dalitz plot of D 0   -  +  0 (EPS-208)  Kinematic distributions in  c   e + (EPS-138)  Decay rate of B 0  K * (892) +  -
Title Gabriella Sciolla Massachusetts Institute of Technology Representing the BaBar Collaboration Beauty Assisi, June 20-24, 2005 Searching for.
CKM03 workshop What I learnt R. Faccini. Beta Lots of importance is given to VV modes Angular analysis could reveal new physics because there are T-odd.
1 B s  J/  update Lifetime Difference & Mixing phase Avdhesh Chandra for the CDF and DØ collaborations Beauty 2006 University of Oxford, UK.
Sep 11, 2006SLUO Anual Meeting Search for Super-Penguins: CP Violation in B 0 ->K+K-K 0 D. Dujmic, SLAC For BABAR Collaboration D. Dujmic, SLAC For.
Measurements of  and future projections Fabrizio Bianchi University of Torino and INFN-Torino Beauty 2006 The XI International Conference on B-Physics.
Sin2  1 /sin2  via penguin processes Beauty 2006 Sep.25-29, Univ. of Oxford Yutaka Ushiroda (KEK)
SLAC DOE Review, Jun CP Violation in Penguin Decays Denis Dujmic, SLAC.
1. 2 July 2004 Liliana Teodorescu 2 Introduction  Introduction  Analysis method  B u and B d decays to mesonic final states (results and discussions)
Page 1 B 0   Ks + quasi 2 body modes Koji Hara (Nagoya University) CKM2006 WG4    from charmless B decays.
A window for New Physics in B s →KK decays Joaquim Matias Universitat Autònoma de Barcelona David London & JM, PRD (2004) David London &JM & Javier Virto,
Amplitude Analysis of the D 0        Dalitz Plot G. Mancinelli, B.T. Meadows, K. Mishra, M.D. Sokoloff University of Cincinnati BaBar Coll. Meeting,
M. Adinolfi - University of Bristol1/19 Valencia, 15 December 2008 High precision probes for new physics through CP-violating measurements at LHCb M. Adinolfi.
25/9/2007 LHCb UK meeting 1 ADS determination of γ with B→(Kπ) D K, B→(hh) D K and B→(K3π) D K Jim Libby (University of Oxford)
1 Multi-body B-decays studies in BaBar Ben Lau (Princeton University) On behalf of the B A B AR collaboration The XLIrst Rencontres de Moriond QCD and.
Search for CP Violation in B 0  h decays and B 0  h decays with B A B AR International Europhysics Conference on High Energy Physics, July 17 th -23.
1 ICHEP’04, Beijing, Aug 16-22, 2004 A. Höcker – sin2  in Loop-Dominated Decays with B A B AR The Measurement of sin2β (eff) in Loop-Dominated B Decays.
Pavel Krokovny Heidelberg University on behalf of LHCb collaboration Introduction LHCb experiment Physics results  S measurements  prospects Conclusion.
 3 measurements by Belle Pavel Krokovny KEK Introduction Introduction Apparatus Apparatus Method Method Results Results Summary Summary.
WIN-03, Lake Geneva, WisconsinSanjay K Swain Hadronic rare B decays Hadronic rare B-decays Sanjay K Swain Belle collaboration B - -> D cp K (*)- B - ->
CP Violation Studies in B 0  D (*)  in B A B A R and BELLE Dominique Boutigny LAPP-CNRS/IN2P3 HEP2003 Europhysics Conference in Aachen, Germany July.
1 EPS03, July 17-23, 2003Lorenzo Vitale Time dependent CP violation studies in D(*)D(*) and J/ψ K* Lorenzo Vitale INFN Trieste On behalf of BaBar and Belle.
Measurement of  2 /  using B   Decays at Belle and BaBar Alexander Somov CKM 06, Nagoya 2006 Introduction (CP violation in B 0   +   decays) Measurements.
Andrzej Bożek for Belle Coll. I NSTITUTE OF N UCLEAR P HYSICS, K RAKOW ICHEP Beijing 2004  3 and sin(2  1 +  3 ) at Belle  3 and sin(2  1 +  3 )
Jeroen van Hunen (for the LHCb collaboration) The sensitivity to  s and  Γ s at LHCb.
Charm Mixing and D Dalitz analysis at BESIII SUN Shengsen Institute of High Energy Physics, Beijing (for BESIII Collaboration) 37 th International Conference.
Measurements of   Denis Derkach Laboratoire de l’Accélérateur Linéaire – ORSAY CNRS/IN2P3 FPCP-2010 Turin, 25 th May, 2010.
Measurements of  1 /  Flavor Physics and CP Violation 2010, May 25, 2010, Torino, Italy, K. Sumisawa (KEK)
Branching Fractions and Direct CP
D0 mixing and charm CP violation
Present status of Charm Measurements
CP violation and D Physics
David B. MacFarlane SLAC EPAC Meeting January 25, 2006
Time-dependent analyses at D0-D0 threshold
γ determination from tree decays (B→DK) with LHCb
Measurements of a and future projections
Radiative and electroweak penguin processes in exclusive B decays
Max Baak, NIKHEF on behalf of the BABAR and BELLE Collaborations
CKM Status In this lecture, we study the results summarized in this plot. November 17, 2018 Sridhara Dasu, CKM Status.
CP Violation in B0 Decays: Some Highlights
Measurements of the UT Angle a from BABAR
Representing the BaBar Collaboration
new measurements of sin(2β) & cos(2β) at BaBar
Charm Mixing, CPV and Rare D0 decays at BaBar
Measurements of g and sin(2b+g ) in BaBar
CP violation in the charm and beauty systems at LHCb
Attila Mihalyi University of Wisconsin-Madison
“sin2f1” measurement with bs penguin decays at Belle
B  at B-factories Guglielmo De Nardo Universita’ and INFN Napoli
Hadronic Substructure & Dalitz Analyses at CLEO
Charmless B-decays at BaBar
Charmless Quasi-two-Body Modes at BaBar
How charm data may help for φ3 measurement at B-factories
Constraints on α from B Decays at BaBar
B. El-Bennich, A. Furman, R. Kamiński, L. Leśniak, B. Loiseau
f3 measurements by Belle
The Measurement of sin2β(eff) in Loop-Dominated B Decays with BABAR
Search for Direct CP Violation in 3-body Cabibbo-suppressed D0 Decays
Search for Direct CP Violation in 3-body Cabibbo-suppressed D0 Decays
Hadronic 3-body B decays
G. Mancinelli, B.T. Meadows, K. Mishra, M.D. Sokoloff
Theoretical issues with S in 3-body decays
Sin(2β) measurement with b→c transitions in BaBar
清华大学高能物理研究中心 Center for High Energy Physics, Tsinghua University
Measurement of f3 using Dalitz plot analysis of B+ D(*)K(*)+ by Belle
Presentation transcript:

Search for Super-Penguins: CP Violation in B0->K+K-K0 D. Dujmic, SLAC For BABAR Collaboration SM rules Special thanks to: G. Cavoto, M. Krishnamurthy, E. Di Marco, M.Pierini, A.Roodman, S.Spanier, J.Thompson Sep 11, 2006 SLUO Anual Meeting 2006

CP Violation in SM ? CKM picture of charged weak currents: p=u,c,t W ± (solely responsible for CPV in SM) p=u,c,t q=d’,s’,b’ W ± Vpq ? But amount of CP violation too small: - observation: - area of unitarity triangle: Additional sources of CP violation needed Sep 11, 2006 SLUO Anual Meeting 2006

Search for Super-Penguins Penguin amplitude in SM Super-penguin, beyond-SM? Example of SUSY diagram SM rules Double-CKM suppression: Loop suppression: Decay rates small BF<7·10-5 Virtual, heavy particles can appear in loops - can be relatively large, O(1) - in general not CP-conserving Sep 11, 2006 SLUO Anual Meeting 2006

CPV Parameter sin2b  B0  K+K-K0 amplitudes: CPAsymmetry: IF: flavor K+K-K0 B0  K+K-K0 amplitudes: tag e-  Interference term has different signs for B0/B0bar tags Interference phase only due to B0/B0bar mixing (in SM) SM CPAsymmetry: (B0/B0bar tags) super penguins ~0 same asymmetry for J/YKS and K+K-KS IF: or super-penguins exist! Sep 11, 2006 SLUO Anual Meeting 2006

Estimate of Dsin2b in K+K-KS Tree From tree-dominated decays B0->J/yKS (SM reference point): Penguin Experimental average of all penguins (penguin-tree) Sep 11, 2006 SLUO Anual Meeting 2006

Analysis of 3-Body Decay Selection of charm-less 3-body decays is tricky - large background requires usage of several kinematic, event-shape variables in event selection - good particle ID CP Violation measurement with additional complication - CP depends on angular momentum L between K+ and K- - (K+ K-)KS can be both CP-even and CP-odd * K+ K- B0 KS L L’=L L=even CP(K+K-KS)= +1 -sin2b L=odd CP(K+K-KS) = -1 +sin2b Dilution if both CP present!! -> (2fodd-1) sin2b How to analyze angular momentum composition? *[ CP(KKKS)= - CP(KKKL) ] Sep 11, 2006 SLUO Anual Meeting 2006

Need Dalitz plot analysis to measure CP asymmetry CP Content Fractions of P-wave from analysis of angular moments: 0.29 ± 0.03 over whole DP 0.89 ± 0.01 in f(1020) region BABAR-CONF-06/40 (ICHEP06) P-wave strength Fraction of P-wave From 879±36 K+K-KS(p+p-) decays From 624±30 K+K+K- decays previously: - cut >1.1GeV (assume CP-even) - 1.0045<m<1.0345 (assume CP-odd) Need Dalitz plot analysis to measure CP asymmetry Sep 11, 2006 SLUO Anual Meeting 2006

B0→K+K-K0 Isobar Model fK0 f0(980)K0 X0(1550)K0 Non-resonant Component CP fK0 odd f0(980)K0 even X0(1550)K0 Nonresonant even(90%) odd(10%) cc0K0 toy Dalitz plot fK0 f0(980)K0 X0(1550)K0 Non-resonant Charm(onium) contributions: D-K+, DS-K+ cc0K0 Use flavor-symmetry to relate BABAR’s K+K+K- Dalitz plot Sep 11, 2006 SLUO Anual Meeting 2006

Dalitz Plot PDF Measure CP asymmetry in time-dependent Dalitz plot: Five observables: Dt, s(Dt), m(K+K-), cosqH, tag flavor B0 amplitude B0bar amplitude CP Violation: Rate difference Phase difference Sep 11, 2006 SLUO Anual Meeting 2006

… Add All K+K-K0 Final States K+K-KS(p+p-) 138 ± 17 K+K-KS(p0p0) f(1020) 879 ± 36 “X0(1550)” Non-resonant cc0 f0(980) K+K-KL 499 ± 52 Add K+K-KS(KSp0p0) and K+K-KL All channels use same Dalitz plot model! ~1500 signal events Sep 11, 2006 SLUO Anual Meeting 2006

Average CP-Asymmetry Combine KKKS+-, KKKS00, and KKKL KKKS+- alone: Assume same CPV parameters for all KKK0 KKKS+- alone: SM: ACP=0 b=0.370 Component Fraction (%) fK0 12.9±1.3 f0(980)K0 22.3±8.9 X0(1550)K0 4.1±1.8 Nonresonant 91±19 cc0K0 2.8±0.8 D-K+, DS-K+ 4.9±1.1 Sep 11, 2006 SLUO Anual Meeting 2006

Measurement of b Assume final state is mixture of CP-eigenstates (partial waves) both real and imaginary b/c of CP-even, -odd interferences (->2b) real in Q2B analyses (->sin2b) p/2-beff p/2-beff beff 4.6s Sep 11, 2006 SLUO Anual Meeting 2006

CPV in Low K+K- Mass Resonant fractions for m(K+K-)<1.1GeV f(1020)K0 57% f0(980)K0 34% Non-res 13% Low-K+K- mass fit for CPV parameters in fK0 and f0K0 to reduce dependence on Dalitz plot model fK0 theoretically very clean s(sin2b)~ O(1%) Fix S-wave, float isobar parameters for P-wave KKKs+- 252 ± 19 KKKs00 35 ± 9 KKKL 195 ± 33 Sep 11, 2006 SLUO Anual Meeting 2006

CPV in Low K+K- Mass Combined KKKS+-, KKKS00, and KKKL fKS ACP=0 asymmetry plot ±15MeV under f fKS SM: ACP=0 b=0.370 f0KS CPV measurements in f0Ks and fKs correlated (one background for the other) cross-check with Q2B analysis syst. errors dominated by Dalitz plot model consistent with SM, Belle Sep 11, 2006 SLUO Anual Meeting 2006

Summary Time-dependent Dalitz plot analysis opens new possibilities in study of penguin decays: - measurement of asymmetry angle (instead of sine of the angle) - removes dilution for final states with opposite CP - model uncertainties included in fit BABAR (bsin2b) Belle (sin2b) KKK0 0.661 ±0.12 ± 0.06 (all KKK0) 0.68 ±0.15 ±0.03 +0.21 −0.13 (excluding fKS, KKKS only) fK0 0.12 ±0.31 ±0.10 0.50 ±0.21 ±0.06 f0(KK)K0 0.31± 0.32 ± 0.07 No result (f0K+K-) Lower sin2b than expected consistent with trend seen in other analyses CPV results from penguin decays still intriguing, but need to work harder to observe new phenomena Sep 11, 2006 SLUO Anual Meeting 2006

More Slides Sep 11, 2006 SLUO Anual Meeting 2006

Angular Moments K+ KS K- - Model-independent approach to extract CP content [BABAR, PRD71,091102] - Assume S and P-waves decaying into K+K- K+K- CMS - Decay rate in terms of moments of Legendre polynomials: S-wave - Moments <PL> computed using sPlots [Pivk, Le Diberder, Nucl.Inst.Meth. A555] - Fraction of P-wave: P-wave (angular momentum conservation) Sep 11, 2006 SLUO Anual Meeting 2006

BABAR/Belle 2006: B0  KKKS Belle BABAR Belle’s estimate (±10MeV): Belle’s helicity plot (±10MeV under f mass) [Hazumi ICHEP06 talk] B+K+K+K- (230MBB) PRD72,032003(2006) non-zero yield below and above f peak! B0K+K-K0 (347MBB) (bkg substracted) hep-ex/0607112 Belle’s estimate (±10MeV): K+K+K- Dalitz (140 fb-1) ~2.75±0.14% ignores f0(980) Estimates from BABAR results (±10MeV): K+K+K- moments (347MBB): ~8±1% K+K-K0 Dalitz (347MBB) and K+K+K- Dalitz (230MBB): f0K~10±3%, NR~3±1% -> 13±3% Belle’s fitting range Old BABAR fitting range Sep 11, 2006 SLUO Anual Meeting 2006

Dalitz Plot Isobar Model “Non-resonant” i j k “resonant” i k Decay amplitude  ∑res = {ij}res B j B Resonant amplitude: Blatt-Weisskopf form factors Breit-Wigner Angular correlations Coupled channel BW (Flatté) Single channel BW Sep 11, 2006 SLUO Anual Meeting 2006