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| Patrick Koppenburg's LHCb pages | |||||
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The LHCb experiment is an experiment at the LHC accelerator at CERN.
It is a forward single-arm spectrometer dedicated to precision measurements
of CP violation and rare decays in the b quark sector.
Recent experimental results have shown that CP violation
is large in this sector.
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| Talks and Notes |
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Penguin Decays
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I am collaborating to the Rare Decays Task Force and am in particular in charge of
the B->llK channel.
Notes:
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| Data Quality |
I am co-ordinating the LHCb Data Quality.
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High Level Trigger
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I am developing the second level of the High Level Trigger (HLT). |
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More
-> Official LHCb page at CERN. |
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| Old, often even obsolete Stuff: | |
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Rare b->lls,d Decays
-> Thesis chapters 6-8 (1999-2002) |
I have studied the sensitivity of the LHCb experiment to the flavour changing neutral current decays b->lld,s. These decays are very sensitive to New Physics and allow to extract the CKM matrix elements ratio Vtd/Vts, which constrains the length of the Rt side - opposite to gamma - of the unitarity triangle. |
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Optimization of the Vertex Detector Level 1 Trigger Preprocessor Interface
-> Thesis chapter 5 (1998-2001) |
The vertex detector L1 electronics (L1E) is a part of the vertex front-end read-out
electronics. It digitizes the analogue data from the vertex read-out chips and
sends them to the data aquisition (DAQ) and the Level 1 vertex trigger. I have studied the impact of various common-mode correction algorithms on the L1 trigger efficiency. |
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Simulation of interacting particles in silicon sensors
-> Thesis chapter 4 (1997-2001) |
I have written a detailed simulation of particle interactions in silicon sensors to allow to understand
the results of the 1999 VeLo testbeam. The simulation uses the deposited energy and the entry and exit point as input and simulates the signal deposited on each strip. |
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Generator maintenance at LHCb
-> Generators (1999-2002) |
The generator group is studying various event generators.
Production and decay capabilities are tested.
I used to be the manager of the simpgen and
qqlhcb packages
which are doing the event generation and decays in SICBMC. |
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Offline reconstruction of multiple primary vertices
(1997-2001) |
I have studied the possibility of using pile-up events in physics analyses. I have developped a tool to reconstruct several primary vertices at LHCb. |
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Scintillator-filled capillaries
-> Capillaries (1997) |
In the frame of the RD46
research project at CERN, the IPHE Lausanne takes
part in the development of a track detector
consisting in glass micro-tubes (typically 20 microns diameter) filled with
scintillator by capillarity.
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