Dr Yuehong Xie

---

2012 talks:

• Tuesday meeting 21 February 2012: Sign of decay width difference in the Bs system: approval talk for submission to PRL
• Seminar at Birmingham University, 11 January 2012: Recent highlights from LHCb

---

2011 talks:

• LHCb week, 30 November 2011: CPV in B decays review: sumamry of the CPV session of the LHCb-theory workshop
• CPWG meeting, 24 November 2011: Ambiguity-free phi_s measurement with Bs->J/psiKK: WG approval
• Analysis and Software Week, 2 November 2011: Ambiguity-free phi_s measurement with Bs->J/psiKK
• Beyond the Standard Model: Results with the 7 TeV LHC Collision Data, ICTP, Trieste, Italy, 19 - 23 September 2011: Search for new physics at LHCb
• CPWG meeting, 8 September 2011: Update on ambiguity-fre measurement of phi_s in Bs->JpsiPhi
• CPWG meeting, 25 August 2011: Ambiguity-fre measurement of phi_s in Bs->JpsiPhi
• LHCb Week, 30 June 2011: Summary of phis and mixing study
• All talks by me in physics WG meetings from CDS
• CPWG tagging meeting, 5 May 2011 On use of SSK tagging for Bs->J/psiphi analysis
• betas WG meeting, 19 May 2011 S-Wave Sign Problem and treatment of s-wave m(KK) dependence
• Rencontres de Moriond EW, 13-20 March 2011: CP violation study with B Decays at LHCb
• LHCb CP WG beta_s: joint Lifetimes and Untagged Analysis meeting, 31 January 2011: Lifetime fitting using Hlt1TrackMuon trigger
• LHCb CP WG beta_s: joint Lifetimes and Untagged Analysis meeting, 13 January 2011: time resolution model and lifeitmes from sFit
• LHCb-UK annual meeting, 7 January 2010: Bs->JpsiPhi status and prospects

2010 talks:

• LHCb CP WG beta_s, 4 November 2010: Update on tagging optimization
• LHCb CP WG beta-s, 4 November 2010: Angular analsyis of Bu->JpsiK+
• LHCb joint Lifetimes and Untagged Analysis meeting , 4 November 2010: new tuple tools for B->JpsiX
• LHCb CP WG meeting on flavour tagging, 28 October 2010: Methods for flavour tagging optimization on data
• LHCb joint Lifetimes and Untagged Analysis meeting, 21 October 2010: Review and optimization of B->JpsiX event selection
• LHCb CP WG meeting, 14 October 2010: Progress report: flavour tagging optimization on data
• LHCb CP WG meeting, 7 October 2010: A method for optimization of flavour tagging performance on data
• LHCb CP WG meeting, 23 September 2010: Proper time resoltuion and tagging performance in Stripping09 data
• LHCb Physics Performance meeting, 20 September 2010: Study of proper time resoltuion with Jpsi->mumu
• LHCb CP WG meeting, 8 July 2010: Study of proper time resoltuion with Jpsi->mumu
• LHCb CP WG meeting, 8 July 2010: MC-free optimization of Bs->JpsiPhi selection
• LHCb Flavour WG J/psi meeting, 26 May 2010: New techniques for J/psi polarization and first look at 7TeV data
• LHCb CP WG meeting, 22 April 2010: Reconstruction performance with first 7TeV data
• LHCb Physics Performance meeting, 22 March 2010: Study of Ks mass bias
• LHCb Physics Performance meeting, 1 March 2010: preliminary results on kaon identification efficiencies from 2009 data
• LHCb RICH Software meeting, 26 February 2010: Kaon efficiency from 2009 data
• LHCb CP WG meeting, 18 February 2010: Solving the angular acceptance probelm
• LHCb Rare Decay WG meeting, 20 January 2010: Progress towards a solution to the angular acceptance problem

2009 talks:

• LHCb CP WG meeting, 10 December 2009: Fitting Bs->Jpsiphi MC09 data using per event acceptance correction and background subtraction methods
• LHCb CP WG meeting, 15 October 2009: Production asymmetry and tagging asymmetry in Bs -> Jpsi phi
• LHCb CP WG meeting, 17 September 2009: A fancy fitter for Bs->JpsiPhi and test with MC09 data
• LHCb CP WG meeting, 06 August 2009: Angular fit of Bd->Jpsi K* with mc09 data
• LHCb Rare Decay WG meeting, 05 August 2009: Update on proper time acceptance function for B->V gamma
• LHCb Rare Decay WG meeting, 22 July 2009: Event-by-event proper time acceptance function for B->V gamma
• LHCb CP WG meeting, 9 July 2009: Ambiguity-free measurement of 2betas in Bs->JpsiK+K-: a toy study
• LHCb CP WG meeting, 14 May 2009: From sPlot to sFit: a new method to subtract background in maximum likelihood fit
• Interview talk: where has all the antimatter gone? [ppt ] [pdf ]
• LHCb Angular acceptanc model and calibration methods meeting, 28 April 2009: Angular acceptance model for Bs->Jpsi phi and calibration method
• LHCb CP WG meeting, 16 April 2009: Calibration of particle efficiency functions and measurement of B momentum spectrum
• LHCb CP WG meeting, 12 March 2009: Progress in angular acceptance study
• LHCb Week Physics meeting, 24 February 2009: S-wave contributions in Bs -> J/psi KK and Bs -> KKKK
• LHCb CP WG meeting, 12 February 2009: Clarification of some problems with proper time acceptance and systematics
• LHCb CP WG meeting, 12 February 2009: S wave contributions to Bs->K+K-K+K
• LHCb CP WG meeting, 22 January 2009: The per event angular acceptance model: initial study and plan
• LHCb Rare Decay WG meeting, 21 January 2009: Thoughts on time acceptance in Bs->phi gamma

2008 talks:

• LHCb CP WG meeting, 22 January 2009: Bs->JpsiPhi angular acceptance created by the LHCb geometry
• LHCb T-REC meeting, 17 November 2008: Momentum calibration
• LHCb CP WG meeting, 13 November 2008: Some issues of proper time extraction and calibration
• LHCb Joint HLT-Physics Workshop, Thursday 16 October 2008: Use of per event statistical power in trigger optimization
• LHCb CP WG meeting, 15 October 2008: KK S-wave contribution to Bs->JpsiK+K-
• LHCb CP WG meeting, 15 October 2008: The ultimate method to optimize event selection for CP measurements
• LHCb Edinburgh group meeting, 26 September 2008: A general theory of event selection optimization and its application
• LHCb CP WG meeting, 18 September 2008: Update on Bs->JpsiPhi/Dspi mistag comparison and check of Bs->phiphi tagging performanc
• CKM 2008, 10 September 2008: CP violation in Bs -> phi phi & Bs -> K*0 K*0-bar
• LHCb Rare Decay WG meeting, 3 September 2008: Fitting B+ -> K+ mu+ mu- with angular acceptance
• LHCb Rare Decay WG meeting, 3 September 2008: Extracting Bs -> phi gamma time acceptance from Bd -> K* gamma.
• LHCb CP WG meeting, 10 Jun 2008: Mistag rate model for Bs->JpsiPhi fit
• LHCb Rare Decay WG meeting, 25 Jun 2008: B+ -> K+ mu+ mu- event selection and angular analysis
• LHCb Tagging, propertime and mixing WG meeting, 17 April 2008: What can we learn from simulation of acceptance effects?
• LHCb TREC meeting, 14 April 2008: Change in TransporterFunctions
• LHCb TREC meeting, 25 February 2008: First look at DC06 data without Velo residual bias in digitization

2007 talks:

• LHCb TREC meeting, 10 December 2007: PV Refitting
• LHCb Rare Decay WG meeting, 21 November 2007: Bd->K*gamma as a control channel for Bs->phigamma acceptance calibration
• LHCb TREC meeting, 14 November 2007: Robust primary vertex (re)fitting
• LHCb Joint WG meeting, 25 October 2007: Effects of production and reconstruction charge asymmetries on rare decays
• LHCb Rare Decay WG meeting, 18 October 2007: B+ -> K+ l+ l- and Bd -> K0s l+ l-: physics and plans
• LHCb Rare Decay WG meeting, 18 October 2007: Effects of production and reconstruction charge asymmetries on rare decays
• LHCb TREC meeting, 15 October 2007: Check of vertex and proper time fit
• LHCb-UK Anual Meeting, Durham, 24-26 September 2007: Hadronic b->s penguins (protected) [ pdf ]
• PhyStat-LHC Workshop, CERN, 27-29 June 2007: Statistical Issues at LHCb [ video ]
• SUPA Particle Physics Theme Meeting, 27 April 2007: CP violation In Bs mesons with LHCb [ pdf ]
• LHCb Rare Decay WG Meeting, 22 February 2007: Probing Neutral Higgs contributions in B->Kmumu through angular distribution
• LHCb Rare Decay WG Meeting, 25 January 2007: Bs->phi gamma as a probe of right-handed currents

2006 talks:

• LHCb PT & M WG meeting, 20 December 2006: Time-dependent Angular Analysis
• LHCb week, CERN, 30 November 2006: CKM phases from penguins
• LHCb T-Rec meeting, 23 October 2006: Check of vertex fit
• LHCb T-Rec meeting, 16 October 2006: Check of vertex fit
• Beauty 2006, Oxford, 25-29 September 2006: LHCb strategies for Gamma
• LHCb Week, Heidelberg, 13 September 2006: Sensitivity to dms and CPV in Bs mixing with semileptonic Bs decays
• LHCb Week Calorimeter meeting, 31 May 2006: Eta' and fits with neutrals
• LHCb CP WG meeting, 11 May 2006: Status report and presel news: phi Ks, eta prime Ks
• LHCb PT & Mixing WG meeting, 23 March 2006: Bs->DsMuNu update
• LHCb PT & Mixing WG meeting, 19 Jan 2006: Bs->DsMuNu study

2005 talks:

• LHCb CP WG meeting, 24 Nov 2005: Status of selection and background for phi Ks
• LHCb Reconstruction meeting, 29 Aug 2005: tracking bias in the bending plane
• LHCb Reconstruction meeting, 22 Aug 2005: on the bias and errors in vertex fitting
• Hadron Collider Physcis Symposium 2005, 4-9 Jun 2005: Event reconstruction and physics performance of the LHCb experiment
• LHCb CP measurements and rare decays WGs meeting, 16 Jun 2005: B->phiKs and DC04
• LHCb UK: running LHCb after 2010, 01 Apr 2005: Vertex resolution impact on physics
• LHCb Collaboration Week, 08 Mar 2005: Precise measurement of the Bs lifetime and lifetime difference at LHCb
• LHCb Tuesday meeting, 22 Feb 2005: Toy study of measurement of the Bs lifetime and lifetime difference using unatgged samples

2004 talks:

• LHCb Tuesday meeting, 14 Dec 2004: Thoughts on fitting a correlated proper time-mass distribution
• LHCb Week, 1 Dec 2004: Fitting for proper time
• LHCb Week, 30 Nov 2004: Exploiting a kinematic fit for proper time measurements and event selection
• LHCb reconstruction Week, 13 Sep 2004: Track and Vertex reconstruction quality in DC04
• LHCb Reconstruction meeing, 05 Oct 2004: Secondary vertex fitting
• LHCb Tuesday meeing, 09 Sep 2004: Optimization of proper time measurement on MC data
• LHCb Reconstruction meeing, 27 Jul 2004: Comments on kinematic fits
• LHCB UK Meeting, 06 Jul 2004: Bd->phiKs analysis
• Material prepared for discussion: Kinematical and geometrical fitting and covariance matrix
• LHCb Reconstruction meeing, 20 Apr 2004: Upstream tracking and Ks reconstruction
• LHCb Tuesday meeing, 06 Apr 2004: A proposal for a Dalitz plot analysis of B->pi+pi-Kshort

2002: CERN Scientific Associate
2003: LHCb Project Associate
Past Activities @CERN in LHCB :

Study of B0->phi Ks

• Comparing track reconstructibility of B0->phi Ks and B0->J/psi Ks, Zurich LHCb Week, September 16, 2003
• Recent Belle and Babar results on CP violation in B0->phi Ks, LHCB B Physics Journal Club, October 31, 2003

LHCb note 2003-100 : Short Track Reconstruction with VELO and TT (August 2003)

LHCb note 2003-088 : Ks Reconstruction (August 2003)

Special talk at Edinburgh,12 June 2003

• From East to West, from Charmonium to CP violation in B decays

Upstrem tracking and non-Velo Ks finding (April 2003 - )

• Presentation at LHCB-light meeting on May 27, 2003
• Presentation at LHCB-light meeting on July 8, 2003

Use of VTT tracks for B0 -> J/psi Ks analysis (March 2003 )

• Presentation at LHCB-light meeting on March 18, 2003

A Look at Primary Vertices in Multiple-Interaction Events(February 2003 )

• Presentation at LHCB-light meeting on Februrary 18, 2003

VELO-TT tracking (July 2002 - February 2003)

• First look: presentation at LHCB-light meeting on July 9, 2002
• Presentation at LHCB-light meeting on July 30, 2002
• Presentation at LHCB-light meeting on August 13, 2002
• Presentation at LHCB-light meeting on September 10, 2002
• Presentation in LHCB Collaboration Week at Cambrdige on September 17, 2002
• Presentation at LHCB-light tracking meeting on October 8, 2002 [1][ 2 ]
• Presentation at LHCB Tracking Workshop in Zurich on October 28, 2002
• Presentation at LHCB-light tracking meetingon on November 19, 2002
• Presentation at LHCB Collaboration Week at CERN on December 10, 2002
• Presentation at LHCB-light meeting on February 11, 2003

Constructing the XML databases for inner tracker geometry (April 2002 - June 2002)

• Describing the geometry of inner tracker in XmlDDDB for 3 setups
  • with mixed technology TT stations [ picture ]
  • with old silicon TT stations [ picture ]
  • with current silicon TT stations [ picture ]
  Here are more pictures of Inner Tracker geometry from xml and a long list of xml files I wrote.
• Adding user parameters in the XML codes, and writing an IT detector element class in C++ to extract the parameters for use in Brunel [ DeITDetector.h ] [ DeITDetector.cpp ]

Joining LHCB (March 2002)