Belle B->VV, XXXX Recontres de Moriond - Mar. 11 Search for new physics in B to VV decays and other hot topics from Belle Katsumi Senyo Nagoya University Katsumi Senyo, Nagoya Univ. Belle B->VV, XXXX Recontres de Moriond - Mar. 11

Just start with joking… Japanese bureaucrats think of `What B Factory is’: It produces pure and quality B mesons made in Japan, like SONY and Honda do (so they like a lepton machine), 150M BB Mass-product per year, accumulate 380M as of today, and offers one flavored B meson per 1 € for sale. Surprise! Japanese high school students already have 1M BB, and have started to search new particles (called b-lab). Join us before teenagers find something! Katsumi Senyo, Nagoya Univ. Belle B->VV, XXXX Recontres de Moriond - Mar. 11

Belle B->VV, XXXX Recontres de Moriond - Mar. 11 Today’s topics ~B →VV decays Submitted to PRL on Mar.8th, 2005 New! B→ f K* update with 253 fb-1 (dataset collected by June `04, 274.5×106 BB) Polarization Full angular analysis and new physics search B+→r+K* update with 253 fb-1 Branching Fraction New! (preliminary) Katsumi Senyo, Nagoya Univ. Belle B->VV, XXXX Recontres de Moriond - Mar. 11

B decays into two vector mesons Polarization reveals spin structure in the decay f S S S S S S B A0 A+ A- b d K* S d S d S d Spin=0 Helicity amplitudes: A0, A+, A- 11 observables(B and B): 6| Ai |, 5 arg(Ai / Aj) cf. fK±: 2 observables: | Ai |, | Ai |, fKS: 3 observables: | Ai |, | Ai |, arg(A / A) A0 requires no spin flip, A+ requires one spin flip A- requires two spin flips. Katsumi Senyo, Nagoya Univ. Belle B->VV, XXXX Recontres de Moriond - Mar. 11

Polarization in B  V V decay Angles in transversity basis Differential cross section looks so complicated, but not, actually. Physics implication and recent experimental results are reviewed here. Katsumi Senyo, Nagoya Univ. Belle B->VV, XXXX Recontres de Moriond - Mar. 11

Polarization in B  V V decay Factorization, as well as simple quantum mechanics predicts: Longitudinal ~ 1 Transverse ~ 0 So, the distribution is expected to be dominated by longitudinal polarization( fL~1 ) Is this true? Katsumi Senyo, Nagoya Univ. Belle B->VV, XXXX Recontres de Moriond - Mar. 11

Belle B->VV, XXXX Recontres de Moriond - Mar. 11 B  V V tree decay Diagrams and tables are from presentation of P.J. Clark@FPCP2004 Yes, it is true for trees. fL~1 Katsumi Senyo, Nagoya Univ. Belle B->VV, XXXX Recontres de Moriond - Mar. 11

Polarization puzzle in pure penguin decays: B  f K*±/0 and B  r -K*0 Today 275 Rescattering? An enhanced New Standard Model Amplitude? New Physics? Diagrams and tables are from presentation of P.J. Clark@FPCP2004 But, this is not true in B  f K* and r-K*0!! fL deviates from 1 in both Belle and BaBar. Katsumi Senyo, Nagoya Univ. Belle B->VV, XXXX Recontres de Moriond - Mar. 11

Belle B->VV, XXXX Recontres de Moriond - Mar. 11 New physics in B  f K*±/0 Further, extracting the triple-products asymmetry w/ B flight direction and two meson polarizations (T-odd CP Violation search) Experimentally, the following observables are sensitive to new physics: subscript i is one of {0, //}. (polarization) non-0 possible w/ FSI D. London, N.Sinha and R. Sinha(2004) Katsumi Senyo, Nagoya Univ. Belle B->VV, XXXX Recontres de Moriond - Mar. 11

Analysis results for B  f K*±/0 What we look at here: Confirm fL ≠1 in b  s pure penguin decay Perform a fully angular analysis Submitted to PRL, hep-ex/0503013 Katsumi Senyo, Nagoya Univ. Belle B->VV, XXXX Recontres de Moriond - Mar. 11

B  f K*±/0: signal extraction 253fb-1 Mass cuts PID Event topology Yields: B  f K*0: 173±16 events B  f K*± : 85 +12 events -11 BG: qq continuum K+K-K*, f0K*(a few %) No updated Branching Fraction results. Direct CP Violation ~ 0 Katsumi Senyo, Nagoya Univ. Belle B->VV, XXXX Recontres de Moriond - Mar. 11

B  f K*±/0: angular analysis Submitted to PRL Fully angular analysis is performed. 10.2s (B  f K*0) and 5.6s (B  f K*±) deviations from 1 in fL Katsumi Senyo, Nagoya Univ. Belle B->VV, XXXX Recontres de Moriond - Mar. 11

B  f K*±/0: angular analysis DCPV~ 0 B  f K*0: SM-consistent Katsumi Senyo, Nagoya Univ. Belle B->VV, XXXX Recontres de Moriond - Mar. 11

B  f K*0: new physics search VV puzzle (if fL<<1) 0.45±0.05±0.02 0.24±0.06±0.02 0.31±0.06±0.01 Can be non-0 (FSI in SM) -0.41 ±0.04 +0.16 -0.14 -0.06±0.10±0.01 -0.06±0.10±0.01 -0.06±0.05±0.01 NP if non-0 -0.01±0.06±0.01 0.06±0.05±0.01 -0.16 ±0.03 +0.16 -0.14 0.01±0.10±0.02 -0.11±0.11±0.02 Submitted to PRL Katsumi Senyo, Nagoya Univ. Belle B->VV, XXXX Recontres de Moriond - Mar. 11

Analysis results for B  r±K*0 ~Another b  s pure penguin decay What we look at here: Measure fL and see whether it deviates from 1 Branching fraction measurement Preliminary results Katsumi Senyo, Nagoya Univ. Belle B->VV, XXXX Recontres de Moriond - Mar. 11

Belle B->VV, XXXX Recontres de Moriond - Mar. 11 B+  r+K*0: DE-Mbc plots 253 fb-1 B+  p+p-p0K+ b →c tran. qq continuum Nsig = 134.8 ±16.9 (B+  p+p-p0K+ before non- resonant component subtraction) Katsumi Senyo, Nagoya Univ. Belle B->VV, XXXX Recontres de Moriond - Mar. 11

B+  r+K*0: M(pp0) / M(Kp) fit ~ non-resonant subtraction S=5.3s r: 125.4±15.8 evts Non res.:-0.3±3.0 evts K*: 85.4±16.1 evts Non res.:28.8±4.1 evts Fit with P-wave Breit-Wigner(+ det.res.) for signal, phase-space for non-res. Katsumi Senyo, Nagoya Univ. Belle B->VV, XXXX Recontres de Moriond - Mar. 11

B+  r+K*0: Polarization result cosqhelr+ cosqhelK*0 A0 A± BG systematics fL=0.43±0.11(stat.) +0.05 (syst.) -0.02 Preliminary results Systematic error from ArKp interference is ~ 0.5% Katsumi Senyo, Nagoya Univ. Belle B->VV, XXXX Recontres de Moriond - Mar. 11

B+  r+K*0: Branching Fraction BF( B+  r+K*0) =(8.9±1.7(stat.) ±1.0(syst.))×10-6 Preliminary results Systematic uncertainties Measured fL is used to determine the BF. Katsumi Senyo, Nagoya Univ. Belle B->VV, XXXX Recontres de Moriond - Mar. 11

Belle B->VV, XXXX Recontres de Moriond - Mar. 11 Summary VV polarization puzzle in b  s penguin decays (f K*/r-K*) confirmed, fL deviates from 1 for both modes. A fully angular analysis and triple-product correlation investigated for B  f K* Experimental results provide stimulus to theoretical models of B decay Katsumi Senyo, Nagoya Univ. Belle B->VV, XXXX Recontres de Moriond - Mar. 11

New physics in B  f K*±/0 (backup) All suggested variables by D. London, N. Sinha and R. Sinha(2004). r param. needs time-dependent analysis, though we have not done yet. Katsumi Senyo, Nagoya Univ. Belle B->VV, XXXX Recontres de Moriond - Mar. 11

B  f K*±/0 : details (backup) Not really. See hep-ex/0503013. Katsumi Senyo, Nagoya Univ. Belle B->VV, XXXX Recontres de Moriond - Mar. 11

B+  r+K*0: details (backup) Katsumi Senyo, Nagoya Univ. Belle B->VV, XXXX Recontres de Moriond - Mar. 11

B+  r+K*0: details (backup) Katsumi Senyo, Nagoya Univ. Belle B->VV, XXXX Recontres de Moriond - Mar. 11

B+  r+K*0: details (backup) Katsumi Senyo, Nagoya Univ. Belle B->VV, XXXX Recontres de Moriond - Mar. 11

B+  r+K*0: details (backup) Katsumi Senyo, Nagoya Univ. Belle B->VV, XXXX Recontres de Moriond - Mar. 11

B+  r+K*0: details (backup) Katsumi Senyo, Nagoya Univ. Belle B->VV, XXXX Recontres de Moriond - Mar. 11

B+  r+K*0: details (backup) Katsumi Senyo, Nagoya Univ. Belle B->VV, XXXX Recontres de Moriond - Mar. 11

B+  r+K*0: details (backup) Katsumi Senyo, Nagoya Univ. Belle B->VV, XXXX Recontres de Moriond - Mar. 11

B+  r+K*0: details (backup) Katsumi Senyo, Nagoya Univ. Belle B->VV, XXXX Recontres de Moriond - Mar. 11

B+  r+K*0: details (backup) 0.5 Katsumi Senyo, Nagoya Univ. Belle B->VV, XXXX Recontres de Moriond - Mar. 11