Upload File

rare b decays at belle

Download Rare B Decays at Belle

If you can't read please download the document

Upload: tocho

Post on 09-Jan-2016

41 views

Category:

Documents


2 download

Report

DESCRIPTION

Rare B Decays at Belle. Hsuan-Cheng Huang ( 黃宣誠 ) National Taiwan University 2 nd BCP Workshop @ NTU, Taipei June 7 - 9, 2002. Outline. Introduction Charmless Hadronic B Decays Charmless Baryonic B Decays Radiative / EW Penguin B Decays Suppressed b -> c Decays Summary. Introduction. - PowerPoint PPT Presentation

TRANSCRIPT

  • Rare B Decays at BelleHsuan-Cheng Huang ()National Taiwan University

    2nd BCP Workshop @ NTU, TaipeiJune 7 - 9, 2002

    Hsuan-Cheng Huang

  • OutlineIntroductionCharmless Hadronic B DecaysCharmless Baryonic B DecaysRadiative / EW Penguin B DecaysSuppressed b -> c DecaysSummary

    Hsuan-Cheng Huang

  • IntroductionRare B decays can be described by various tree and penguin diagramsThey are useful to determine the CKM unitarity triangleSearch for CP violation and probe new physics

    Hsuan-Cheng Huang

  • Belle CollaborationA World-Wide Activity Involving 50 Institutions14 Nations

    Hsuan-Cheng Huang

  • Belle Collaboration~ 300 authors

    Hsuan-Cheng Huang

  • KEK View

    Hsuan-Cheng Huang

  • KEKB Asymmetric e+e- Collider8GeV electron3.5GeV positronKEKB Collider

    Hsuan-Cheng Huang

  • KEKB Luminosity: the worlds best ! Peak L7.251033 cm-2s-1(Mar. 28, 02)Daily Integrated L387 pb-1/day(May 11, 02)Weekly Integrated L2.52 fb-1/week(May 9, 02)82 fb-1recorded(Jun. 6, 02)Daily Integrated luminosity historyIntegrated luminosity history43 fb-129 fb-1

    Hsuan-Cheng Huang

  • Belle DetectorSilicon Vertex Detector (SVD) Impact parameter resolution 55m for p=1GeV/c at normal incidenceCentral Drift Chamber (CDC) (Pt/Pt)2 = (0.0019Pt)2 + (0.0034)2 Pt in GeV/c2K/ separation with dE/dx in CDC (dE/dx =6.9%) TOF (TOF = 95ps) Aerogel Cerenkov (ACC) Efficiency = ~87%, Fake rate = ~8% up to 3.5GeV/c, e with CsI crystals (ECL) E/E ~ 1.8% @ E=1GeV e : efficiency > 90% (~0.3% fake for p > 1GeV/c)KL and with KLM (RPC chambers) : efficiency > 90% (~2% fake at p > 1GeV/c)Quite stable performance up to now ACC

    Hsuan-Cheng Huang

  • Analysis MethodIdentify Signals: beam-constrained mass Mbc and energy difference DE

    Hsuan-Cheng Huang

  • B hh: Introduction

    Hsuan-Cheng Huang

  • B hh: ResultsUpdated measurements with 31.7M BB mass is assigned to charged tracksLikelihood ratio cut optimized for each modeShaded area corresponds to background from other rare B decays Better fitting systematics00 Hint Feedback to 2 measurementPreliminary29 fb-1

    Hsuan-Cheng Huang

  • B hh: Branching Fractions00 HintNo KK yet!PreliminaryBaBar 55.6 fb-1*** 20.6 fb-1Bartoldus @ FPCP

    Hsuan-Cheng Huang

  • B hh: Direct CP SearchPreliminaryK+p-K-p+K+p0K-p0p+p0p-p0K0p-K0p+quarkFluctuation?BaBar 55.6 fb-1

    Hsuan-Cheng Huang

  • B ()h: Introduction

    Hsuan-Cheng Huang

  • Results of B K* / K29 fb-1

    Hsuan-Cheng Huang

  • B K ResultsPreliminary

    Hsuan-Cheng Huang

  • B ResultsPreliminary

    Hsuan-Cheng Huang

  • B () h: Summary Preliminary

    Hsuan-Cheng Huang

  • B h: Introduction

    Hsuan-Cheng Huang

  • B h: ResultsPreliminary

    Hsuan-Cheng Huang

  • B h: Consistency Check

    Hsuan-Cheng Huang

  • B h: SummaryPreliminary

    Hsuan-Cheng Huang

  • Three-Body Charmless B DecaysB g Khh DalitzfSizablePRD 65 092005 (2002)

    Hsuan-Cheng Huang

  • B -> K h hA. Garmash @ FPCP*PRD 65 092005 (2002)** H.C.Huang@Moriond 02 EWPreliminary

    Hsuan-Cheng Huang

  • Pseudo-Two-Body Decay BFsB+ K+ p+ p-B+ K+ K+ K-B+ KS K+ K-B+ KS p+ p-PRD 65 092005 (2002)Preliminary29 fb-143 fb-1Gabyshev @ DPF2002

    Hsuan-Cheng Huang

  • Charmless B Decays to BaryonsPRD 65, 091103 R (2002)

    Hsuan-Cheng Huang

  • First Observation of Charmless Baryonic B Decays

    Hsuan-Cheng Huang

  • 3-body Baryonic B Decays, cont. Chua, Hou, Tsai hep-ph/0204186fJ(2220)?Chua,Hou & Soni, PRL 86, 4247 (2001)J/y

    Hsuan-Cheng Huang

  • Radiative B DecaysEMStarting to Constrain NPPreliminary

    Hsuan-Cheng Huang

  • More Radiative PenguinssULPLB01Exclusive (Kpg, Kppg) / Inclusive = (35 8) %hep-ex/0205025, submitted to PRL

    Hsuan-Cheng Huang

  • First Obseervation of ElectroWeak Penguin !?Signal !PRL 88 021801 (2002)But, BaBar20.7 fb-1

    Hsuan-Cheng Huang

  • Inclusive B -> Xsl+l-Xs = (K+ or KS) + (0 ~ 4) p+ (upto 1 p0)First Evidence!First Evidence!Senyo@FPCP43 fb-1Preliminary

    Hsuan-Cheng Huang

  • Inclusive B -> Xsl+l-With higher statistics, more information will be obtained from M(Xs) and M(ll) distributionsJ/psi and psi vetoesKK*MXs DistributionMll DistributionMC based on the NNLO calculationAli-Lunghi-Greub-Hiller, hep-ph/0112300

    Hsuan-Cheng Huang

  • SummaryRecent Rare B Results from Belle have been presentedFirst Observations: B ppK, Khh, Kll, KppgFirst Evidence: B , K , XsllRe-Observation: B KImproved Measurement: B K, , K*gMore and more interesting results are coming 80fb-1 @ ICHEP2002

    Hsuan-Cheng Huang


Charmless B decays - Agenda (Indico)26/05/2010 Charmless B decays at BaBar and Belle 3 Why charmless B decays? Contributions from tree and penguin diagrams that could have contributions

Rare B decays at LHCb - IHEP...Why rare b decays?Flavour-Changing Neutral Currents (FCNC) highly suppressed in the SM 𝑏→𝑠( ) decays: only via penguin or box diagrams => sensitive

Belle results on Lepton Flavor Violation in tau decays

Search for Supersymmetry Using Rare B 0 s(d) m + m - Decays at CDF Run II

Rare B Decays with “Missing Energy” Tom Browder (University of Hawaii) Will discuss experimental results from Belle on B ν (BELLE-CONF-0671) and B

Baryonic B decays

Andrey Golutvin Moriond 20071 Prospects of search for New Physics in B decays at LHC Andrey Golutvin ITEP / Moscow - In CP - violation - In rare decays

Rare B Decays at Belle Hsuan-Cheng Huang ( 黃宣誠 ) National Taiwan University 2 nd BCP Workshop @ NTU, Taipei June 7 - 9, 2002

PrimEx Experiments and the Prospects of Rare η Decays at GlueX

Progress on rare K and π decays from BNL E949

A study of charmless hadronic two-body B decays at Belle Nov 30, 2007 Yuuj ｉ Unno (Hanyang) HaengDang Symposium 2007 @Hanyang university

Rare Pion and Muon Decays: Summary of Results and Prospectsgalileo.phys.virginia.edu/research/groups/pen/talks/INT... · 2008. 11. 21. · Pion Beta Decay Motivation Recent calculations

Measurement of 2 / using B Decays at Belle and BaBar Alexander Somov CKM 06, Nagoya 2006 Introduction (CP violation in B 0 + decays) Measurements

Rare decays of charm & bottom atTevatron

3/13/2005Sergey Burdin (FNAL) @ Moriond QCD1 Sergey Burdin (Fermilab) XXXXth Moriond QCD 3/13/05 Bs Mixing, Lifetime Difference and Rare Decays at Tevatron

Studies of hadronic B decays at LHCb...rare B→DX decays may be used to search for new physics in decays mediated via annihilation or exchange processes. 3 General strategy • Requirements

QCD factorization in B decays · 2018. 11. 16. · Motivation Three interests in exclusive rare (hadronic, semi-hadronic) B decays CKM angles Detailed investigations of various flavour-violating

1 Rare Decays of B Hadrons at CDF Matthew Jones October 3, 2005

The impact of b (p-)+- on global fits of rare bs+- decays · 29.02.2016 Page 1. Physik Institut Motivation – b !s + decays are interesting indirect probes of physics Beyond the

Beyond SM Physics at a CLEO Charm Factoryweb.hep.uiuc.edu/home/mats/cleoc_bsm/cleoc_bsm.pdf · Mats Selen, UIUC, May/5/2001 • Data Assumptions • Tagging • Rare decays •D mixing

Bs Mixing, Lifetime Difference and Rare Decays at Tevatron

Constrained MSSM Unification of the gauge couplings Radiative EW Symmetry Breaking Heavy quark and lepton masses Rare decays (b -> sγ, b->μμ) Anomalous

Theoretical study of rare B/D decays - HKUST Jockey Club ...ias.ust.hk/program/shared_doc/2016/201601hep/Lu_Caidian_160114.pdf · n High precision measurements of B/D decays already

Rare Tau Decay at Belle – Search for Lepton Flavor Violation –

Rare B decays at LHCb experiment

Search for Rare Decays of the B S Meson at the Tevatron Ralf Bernhard University of Zurich XLIst Rencontres de Moriond QCD 19 th March 2006

Direct CP and Rare Decays @ B A B AR

Searches for rare B s Decays with the DØ Detector

EXPERIMENT INR/IHEP Protvino-Moscow, Russia Viacheslav Duk INR RAS QUARKS 2006 Rare Kaon Decays ISTRA+ @

New CP Violation Results from B-meson Decays at Belle

Baryonic B Meson Decays Introduction Charmless decays Charmful decays Summary Min-Zu Wang ( 王名儒 ) National Taiwan University

Direct CP and Rare Decays @ B A B AR BEAUTY 05 - Assisi Jamie Boyd Bristol University On behalf of the B A B AR collaboration

A study of charmless hadronic two-body B decays at Belle

A Search for the Rare Leptonic Decays - Shinshu Universityhepl.shinshu-u.ac.jp/doctor/06/satoyama.pdf · A Search for the Rare Leptonic Decays B+! + and B+!e+ e Doctor Thesis March

Rare B Decays with “Missing Energy”