The LHCb Experiment

1. The LHCb Collaboration

2. Physics Motivation

• CKM matrix relevant to B physics at LHC
• CKM unitary triangles
• Standard weak processes
• Processes where CP violation may have an effect
• How CP violation affects the angles
• Other decays
• Experiment and detector requirements
• Importance of proper time resolution

3. Overview of the experiment

• Spectrometer
• Detector
• Particle identification
• Proper time resolution
• Flexible, robust and efficient trigger
• Further trigger properties
• Level-0 detector components
• Level-1 vertex, track trigger
• Vertex detector elements (a)
• Vertex detector elements (b)
• Level-2 trigger components
• Running luminosity
• Trigger efficiencies
• LHCb trigger efficiency
• Stability of the trigger operating point

4. The LHCb Detector

• LHCb detector seen from above (cut in the bending plane)
• Layout of detector components in the cavern
• Isometric view of experimental zone
• Beam optics, Beam pipe
• Super Conducting Dipole Magnet
• Electronics (architecture commone to all subsystems)
• Vertex Detector
• Status of Vertex Detector
• Future work on Vertex Detector (1998)
• Tracking System
• Inner Tracker
• Rich system
• Pattern recognition - Results
• pi - K separation
• Beam Tests (with 7 commercial HPDs)
• HPD development
• design of RICH2
• Calorimeters
• Hadron Calorimeters
• Muon Detector
• Level-0/Level-1 trigger implementation
• Level-1 Vertex trigger implementation
• DAQ/Computing

5. Cost and Schedule of the Experiment

• Cost/Schedule

6. Physics Performance of the LHCb Detector

• Reconstructed decays
• Simulation program
• Flavour tagging
• Control channels and systematics
• sin 2 beta measurement
• gamma - 2 delta gamma, sin 2 delta gamma measurements
• Event structure
• Importance of particle identification(DsK)
• B s into J/psi phi (untagged)
• B s into J/psi phi (tagged)
• B s into D s minus K plus (tagged)
• sin 2 gamma measurements
• Importance of particle identification
• Simulation results (table)
• Simulation results (figure)
• beta + gamma measurements
• Importance of particle identification
• B d into D zero pi
• D zero - D mass difference
• alpha = pi - beta - gamma (simulation results)
• Reconstruction of B zero into rho 3 pi
• Dalitz plot as a function of proper time for B zero and B zero bar
• B s - B s bar oscillations with B s into D s pi
• Search for B s into mu + mu - decays
• Reconstruction of the radiative penguin decay B d into K * zero gamma
• Summary of the performance in one year

7. Conclusions

Back to LHCb Technical Proposal page