Heavy Flavor Results from CMS Sridhara Dasu, University of Wisconsin For CMS Collaboration Key to CMS Heavy Flavor Physics capability is its dimuon trigger 24 Aug 2015 Sridhara Dasu (Wisconsin) - SUSY2015

Sridhara Dasu (Wisconsin) - SUSY2015 Menu Rare decays and angular distributions of B meson decay products are particularly sensitive probes of physics beyond the Standard Model. Branching ratios for Bsmm and Bdmm Forward-backward asymmetry of muons, longitudinal polarization of K* and differential branching fraction with Q2 in BK*mm CP violating phase fs and decay width difference DGs from BJ/yf 24 Aug 2015 Sridhara Dasu (Wisconsin) - SUSY2015

Sridhara Dasu (Wisconsin) - SUSY2015 Candidate Bmm Event 24 Aug 2015 Sridhara Dasu (Wisconsin) - SUSY2015

Bsmm Rare Decay SM has no FCNC SM Loops leading to Bsmm Decay BSM Contributions could enhance Bsmm Rate 24 Aug 2015 Sridhara Dasu (Wisconsin) - SUSY2015

Long Quest with BSM Hopes 24 Aug 2015 Sridhara Dasu (Wisconsin) - SUSY2015

Boosted Decision Tree Analysis Discriminating variables 3D flight length significance Distance of closest approach between muons B vertex c2/dof Pointing angle B candidate isolation and muon isolation Distance of closest track to B vertex Number of close tracks Impact parameter (significance) w.r.t. primary vertex Categorized (2+2 in 2011, 4+4 in 2012) 12 fits based on signal to background & barrel / endcap 24 Aug 2015 Sridhara Dasu (Wisconsin) - SUSY2015

Sridhara Dasu (Wisconsin) - SUSY2015 2011 Fits in 2+2 Categories PRL 111 (2013) 101804 24 Aug 2015 Sridhara Dasu (Wisconsin) - SUSY2015

Sridhara Dasu (Wisconsin) - SUSY2015 2012 Fits in 4+4 Categories PRL 111 (2013) 101804 24 Aug 2015 Sridhara Dasu (Wisconsin) - SUSY2015

Weighted Distribution of all Data PRL 111 (2013) 101804 Evidence for Bsmm signal @ 4.3s Extracted Branching Ratios: Bs: 3.0±1.0 x 10–9 Bd: <1.0 x 10–9 @95%CL 24 Aug 2015 Sridhara Dasu (Wisconsin) - SUSY2015

Standard Model Compatibility PRL 111 (2013) 101804 Alas, no new physics Compatible with SM 24 Aug 2015 Sridhara Dasu (Wisconsin) - SUSY2015

Combination with LHC-B : Mmm Nature 522 (2015) 68 24 Aug 2015 Sridhara Dasu (Wisconsin) - SUSY2015

Combination with LHC-B : Results Nature 522 (2015) 68 BR(Bsmm) = (2.8 ± 0.7) x 10–9 @ 6.2s BR(Bdmm) = (3.9 ± 1.6) x 10–9 @ 3.2s 24 Aug 2015 Sridhara Dasu (Wisconsin) - SUSY2015

Angular Analysis of B0K*0mm arXiv:1507.08126 Angular distribution can provide insight on new physics 24 Aug 2015 Sridhara Dasu (Wisconsin) - SUSY2015

Fit of B0K*0mm Data arXiv:1507.08126 Un-binned ML fit to invariant mass, and two angles Side bands, MC and signal region used to extract FL, AFB & BR in multiple Q2 bins 24 Aug 2015 Sridhara Dasu (Wisconsin) - SUSY2015

Sridhara Dasu (Wisconsin) - SUSY2015 Sample Fits for Q2 Bin 2 arXiv:1507.08126 The q2 bins are defined as follows: bin 0: 1 - 2 (GeV2) bin 1: 2 - 4.3 (GeV2) bin 2: 4.3 - 6 (GeV2) bin 3: 6 - 8.68 (GeV2) bin 4: J/ψ region bin 5: 10.09 - 12.86 (GeV2) bin 6: ψ(2S) bin 7: 14.18 - 16 (GeV2) bin 8: 16 - 19 (GeV2) 24 Aug 2015 Sridhara Dasu (Wisconsin) - SUSY2015

K* Longitudinal Polarization (FL) arXiv:1507.08126 Measurements are in good agreement with the Standard Model 24 Aug 2015 Sridhara Dasu (Wisconsin) - SUSY2015

K* Longitudinal Polarization (FL) arXiv:1507.08126 Measurements of all experiments are compatible with each other 24 Aug 2015 Sridhara Dasu (Wisconsin) - SUSY2015

Forward-Backward Asymmetry of m arXiv:1507.08126 Measurements are in good agreement with the Standard Model 24 Aug 2015 Sridhara Dasu (Wisconsin) - SUSY2015

Forward-Backward Asymmetry of m arXiv:1507.08126 Measurements of all experiments are compatible with each other 24 Aug 2015 Sridhara Dasu (Wisconsin) - SUSY2015

Differential Branching Fraction arXiv:1507.08126 Measurements are in good agreement with the Standard Model 24 Aug 2015 Sridhara Dasu (Wisconsin) - SUSY2015

Differential Branching Fraction arXiv:1507.08126 Measurements of all experiments are compatible with each other 24 Aug 2015 Sridhara Dasu (Wisconsin) - SUSY2015

Angular Analysis of B  J/y(m+m–) f(K+K–) arXiv:1507.07527 Bs meson CP violating phase (fs) and decay width difference (DGs) between heavy and light Bs states could be sensitive to new physics effects SM predictions are precise Time dependent analysis Flavor tagged Bs sample Transversity Basis 24 Aug 2015 Sridhara Dasu (Wisconsin) - SUSY2015

Invariant Mass of J/y(m+m–) f(K+K–) arXiv:1507.07527 Invariant mass peaks on a smoothly falling small background With 4 well- reconstructed tracks lifetime measurement is quite accurate Flavor tagging is done with semi-leptonic decay of the other B-hadron in the event 24 Aug 2015 Sridhara Dasu (Wisconsin) - SUSY2015

Decay Length and its Uncertainty arXiv:1507.07527 24 Aug 2015 Sridhara Dasu (Wisconsin) - SUSY2015

Fitted Angular Distributions arXiv:1507.07527 24 Aug 2015 Sridhara Dasu (Wisconsin) - SUSY2015

Results of CP violating phase & decay width difference arXiv:1507.07527 Strong Phases 24 Aug 2015 Sridhara Dasu (Wisconsin) - SUSY2015

Sridhara Dasu (Wisconsin) - SUSY2015 Summary Rare decays Bsmm & Bdmm measured to be at SM level Long quest finally ended with 6.2s measurement @ LHC In BK*mm decays: forward-backward asymmetry of muons, longitudinal polarization of K*, and differential branching ratio are also consistent with SM CMS measurements are amongst the most precise Decay B  J/y f used to measure CP violating phase fs and decay width difference of heavy and light Bs-meson Results are consistent with SM expectation What next? The LHC Run 2015-17 @ 13 TeV  100 fb–1 is underway Stay tuned !! 24 Aug 2015 Sridhara Dasu (Wisconsin) - SUSY2015