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Patrick Koppenburg's LHCb pages
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LHCb: A Large Hadron Collider Beauty Experiment for Precision Measurements of CP-Violation and Rare Decays

The LHCb experiment is the forward arm spectrometer at the LHC. It is a optimised 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.
Talks and Notes
  • All LHCb talks at CERN: The comprehensive list of my (1000+) talks at CERN since 2000, generated by the indico system (login to get all LHCb talks).
  • Get all my public LHCb notes.
  • Get all my public and private LHCb notes (requires LHCb password).
  • There are more talks are on the publications page
Physics Coordination

I was the LHCb Physics coordinator (2014-15).

The Physics Coordinator coordinates the analysis efforts in order to ensure the best possible physics data quality and physics output.

Outreach

I am in charge of the LHCb Google+ and twitter @LHCbPhysics accounts.

Controlling QCD Penguin contributions

I collaborate with Kristof De Bruyn and Robert Fleischer on the channel Bs→J/ψKS which is (weakly) sensitive to γ and is a control for penguin effects affecting the measurement of β in Bd→J/ψKS.

We recently measured the CP asymmetries.
Measurement of the time-dependent CP asymmetries in Bs0→ J/ψKS0
R. Aaij et al. (the LHCb collaboration). 24/03/2015.

LHCb-PAPER-2015-005. arXiv:1503.07055 [hep-ex]. JHEP 06 (2015) 131.


Measurement of the effective Bs0→ J/ψKS0 Lifetime
R. Aaij et al. (the LHCb collaboration). 16/04/2013.

LHCb-PAPER-2013-015. arXiv:1304.4500 [hep-ex]. Nucl. Phys. B 873 (2013) 275. Citations.


Measurement of the Bs0 → J/ψKS branching fraction

R. Aaij et al. (the LHCb collaboration). 04/05/2012.
LHCb-PAPER-2011-041. arXiv:1205.0934 (hep-ex). Phys. Lett. B 713 (2012) 172. Citations.

This paper is superseded by the paper above.

Probing New Physics via the Bs0 → μ+μ- effective lifetime
K. De Bruyn, R. Fleischer, R. Knegjens, P. Koppenburg, M. Merk, A. Pellegrino, N. Tuning. 08/04/2012.

arXiv:1204.1737 (hep-ph). Phys. Rev. Lett. 109, 041801 (2012). 100+ Citations.


Branching Ratio Measurements of Bs0 Decays
K. De Bruyn, R. Fleischer, R. Knegjens, P. Koppenburg, M. Merk, N. Tuning. 08/04/2012.

arXiv:1204.1735 (hep-ph). Phys. Rev. D 86, 014027 (2012). Citations.


The same can be done with b-baryons
Observation of the Λb0 → J/ψpπ- decay
R. Aaij et al. (the LHCb collaboration). 04/06/2014.

LHCb-PAPER-2014-020. arXiv:1406.0755 (hep-ex). Article submitted to JHEP. Citations.


More on my publications page.

Links:

Electroweak Penguin Decays

I am participating in the analysis of rare semileptonic decays, in particular B → K*μμ and B → Kll.

The measurement of a deviation from unity in the ratio of branching fractions of B → Kμμ and B → Kee triggered a lot of interest.
Test of lepton universality using B+ → K+l+l- decays
R. Aaij et al. (the LHCb collaboration). 25/06/2014.

LHCb-PAPER-2014-024. arXiv:1406.6482 [hep-ex]. Phys. Rev. Lett. 113, 151601 (2014).
Read the news on the LHCb web site.


I am proud to be have been the first to report the observation of the very rare decay B → μμK at LHCb with 37 pb-1.

Links:

  • Selection of Bu → llK at LHCb and Sensitivity to RK.

    Get the note.

    • My B → llK page (internal)
    • Rare Decays WG Page (internal)

Operations I was the operations coordinator in LHC Run 1 (2010-13), overseeing all aspects of data collection and processing from trigger to physics processing.
  • Operations Wiki page (internal).
  • See the Physics (internal) page.
High Level Trigger

I used to be developing the HLT and now occasionally help in view of future improvements.
  • Correlations of 2012 Trigger Lines. LHCb-INT-2013-009 (internal).

More



Official LHCb page at CERN

  • All my publications and talks.
  • My PhD thesis.
  • My LHCb notes: public, LHCb-internal.
  • Penguin-hunting.
  • Chasseur de pingouins.

16/04/2014 - Patrick Koppenburg [top]