Homepage of Thomas Kuhr

Bachelor and master thesis topics on data analysis and the development of analysis algorithms are offered on the web page of the

Experimental Flavor Physics Group

Research Projects

Search for new physics in (rare) decays

• B -> D(*) tau nu (Nature Article, Scientific American article)
• B -> K(*) nu nu
• B -> pi0/eta/eta' l+ l-
• B -> tau l

Measurement of isospin symmetry violation in Y(4S) decays

• Y(4S) -> B⁰ anti-B⁰
• Y(4S) -> B⁺ B^-

Machine learning applications

• Generation of background samples
• Optimization of background simulation

Software development

• Belle II software framework

Detector service development

• Belle II pixel vertex detector

Outreach

• Belle II virtual reality

Teaching

Lectures

• E5/(E5p): Kern- und Teilchenphysik (WS 19/20, 18/19, WS 17/18, WS 16/17)
• Collaborativce Software Development (WS 19/20, 18/19)
• Heavy Quark Physics / Physik der schweren Quarks (SS 20, SS 19, SS 18, SS 17, WS 16, WS 15/16)

Seminars

• Key Experiments in Particle Physics (SS 20, SS 19, SS 18, SS 17)
• Big Data Science in und außerhalb der Physik (WS 17/18)
• Flavor Lunch (each semester)
• Belle Paper Seminar (each semester)
• Blockseminar: Methoden der experimentellen Teilchenphysik am Beispiel von Belle (II) (SS 15)

Recent Talks

• ErUM Data: Modern Digitization in Research on Universe and Matter
  Big Data Science in Astroparticle Research, Aachen, 18 Feb 2020

• Generation of Belle II pixel detector background data with a GAN
  CHEP2019, Adelaide, 4 Nov 2019

• Operating the Belle II Collaborative Services and Tools
  CHEP2019, Adelaide, 4 Nov 2019

• Deep Learning
  School for Astroparticle Physics, Obertrubach-Bärnfels, 7 Oct 2019

• Das Belle II Experiment
  Lehrerfortbildung des Exzellenzclusters ORIGINS, München, 2 Apr 2019

• Innovative Digital Technologies for Research on Universe and Matter
  Joint HSF/OSG/WLCG Workshop HOW2019, Jefferson Lab, 22 Mar 2019

• Physics at B Factories
  European Belle II StarterKit Workshop, Garching, 8 Jan 2019

• Research Area C Overview
  Science Week, Seeon, 6 Dec 2018

• Flavor Physics at Belle II
  Institutsseminar Kern- und Teilchenphysik, Dresden, 22 Nov 2018

• Flavor Physics at Belle II
  Particle and Astroparticle Physics Colloquium, Aachen, 30 Oct 2018

• Big Data Analytics
  BMBF Strategieworkshop ErUM-Data, Bonn, 3 Oct 2018

• Collaborative Research Project R&D Computing
  Perspektiven für HEP Software und Computing in Deutschland, Wuppertal, 27 Sep 2018

• Belle II at the start of data taking
  CHEP 2018, Sofia, 11 Jul 2018

• Belle II Computing
  NorduGrid 2018, Garching, 4 Jun 2018

• Verbundantrag Innovative Digtale Technologien für die Erforschung von Universum und Materie
  BMBF Arbeitskreis Digitale Agenda Universum und Materie, Bonn, 4 Apr 2018

• CP Violation Measurements at B-Factories and Hadron Colliders
  Terascale Alliance Workshop, Hamburg, 28 Nov 2017

• Computing & Software
  Jahresversammlung der deutschen Teilchenphysiker 2017, Bad Honnef, 11 Nov 2017

• Belle II early physics program
  Blois 2017, Blois, 31 May 2017

• From hadron colliders to e+e-, flavour physics at Belle II
  LHCb Workshop, Neckarzimmern, 23 Mar 2017

• The Belle II Software - From Detector Signals to Physics Results
  INSTR17, Novosibirsk, 27 Feb 2017

• Overview Research Area C
  Universe Cluster Science Week, Garching, 8 Dec 2016

• New Physics Searches at Belle II
  Research Area B Science Day, Garching, 13 Oct 2016

• Event Visualization in Belle II and Genfit
  Interdisciplinary Cluster Workshop on Visualization, Garching, 4 Nov 2015

• New B -> D(*) tau nu results from Belle and LHCb
  MIAPP: Indirect Searches for New Physics in the LHC and Flavour Precision Era, Garching, 8 Jun 2015

• The Next Generation B-Factory Experiment Belle II
  MLL Kolloquium, Garching, 7 May 2015

• New B -> D(*) tau nu result from Belle
  FPCP2015, Nagoya, 25 May 2015

• B -> D(*) tau nu and B -> tau nu at Belle
  Tau 2014, Aachen, 14 Sep 2014

• Computing at Belle II
  Terascale Alliance Workshop, Karlsruhe, 3 Dec 2013

• Belle II: The Future of Flavor Physics
  Antrittsvorlesung, Karlsruhe, 6 Nov 2013

• First Production with the Belle II Distributed Computing System
  CHEP 2013, Amsterdam, 14 Oct 2013

• B -> h(*) nu nu-bar
  2nd KEK Flavor Factory Workshop, Tsukuba, 13 Mar 2013

• The Next Generation B Factory Experiment Belle II
  Prisma + GK-Seminar, Mainz, 5 Dec 2012

• Belle II Status and Plans
  Capri Workshop, Anacapri, 11 Jun 2012

• Computing at Belle II
  CHEP 2012, New York, 22 May 2012

• Updated Search for B->mu+mu- Decays at CDF
  EPS 2011, Grenoble, 22 Jul 2011

• Heavy-flavor Baryons
  Hadron 2011, Munich, 16 Jun 2011

• SuperKEKB and Belle II
  LAPP Experimental Physics Seminar, Annecy, 10 Dec 2010

• Computing at Belle II
  CHEP2010, Taipei, 18 Oct 2010

• Recent Experimental B Physics Results
  EuroFlavour2010, München, 8 Sep 2010

• Bs Physics
  PIC2010, Karlsruhe, 2 Sep 2010

• Computing at Belle II
  DESY Computing Seminar, Hamburg, 14 Jun 2010

• Status of SuperKEKB and Belle II
  FPCP2010, Torino, 29 May 2010

• Upsilon Polarization Measurement at CDF
  DIS, Florence, 22 Apr 2010

• Status and Prospects of Belle and Belle II
  Seminar, Wuppertal, 10 Dec 2009

• Search for New Physics in the Bs Sector at the Tevatron and
  New Charmonium-like States at B Factories
  DIS, Madrid, 29 and 27 Apr 2009

• Hints for New Physics in Bs Mixing?
  Hints for New Physics in Flavor Decays, KEK, 20 Mar 2009
  

• Heavy-Flavour-Physik bei CDF (Eingeladener Vortrag)
  DPG Tagung, München, 10 Mar 2009

• Quarkonium Spectroscopy and Decay Results from CDF
  Quarkonium Workshop, Nara, 3 Dec 2008

• Flavor-Physik bei CDF
  Physikalisches Kolloquium, Karlsruhe, 7 Nov 2008

• Rare B and Charm Decays
  Moriond QCD, La Thuile, 9 Mar 2008

• B Baryon Spectroscopy
  Lattice QCD Workshop, FNAL, 11 Dec 2007

• Lifetime Difference and CP Asymmetry in the B⁰_s -> J/psi phi decay
  SUSY, Karlsruhe, 31 Jul 2007

• Studies of B States at the Tevatron
  La Thuile, 9 Mar 2007

Publications

• Reviews:

  • A challenge to lepton universality in B-meson decays
    Nature 546, 227 (2017)

  • Flavor Physics at the Tevatron
    Springer Tracts in Modern Physics (2012)

• Software for online reconstruction and filtering at the Belle II experiment
  Int. J. Mod. Phys. A 35 33, 2043001 (2020)

• Clustering of B -> D* tau nu kinematic distributions with ClusterKinG
  JHEP 2004, 007 (2020)

• The Belle II Core Software
  Comput. Softw. Big Sci. 3:1 (2019)

• B2BII: Data Conversion from Belle to Belle II
  Comput. Softw. Big Sci. 2:9 (2018)

• The Belle II vertex detector integration
  Nucl. Instrum. Meth. A (2018)

• The Full Event Interpretation -- An exclusive tagging algorithm for the Belle II experiment
  Comput. Softw. Big Sci. 3:6 (2019)

• Averages of b-hadron, c-hadron, and tau-lepton properties as of summer 2016
  Eur. Phys. J. C77, 895 (2017)

• Measurement of the branching ratio of Bbar -> D(*) tau- nubar_tau relative to Bbar -> D(*) l- nubar_l decays with hadronic tagging at Belle
  Phys. Rev. D. 92, 072014 (2015)

• Measurement of the branching fraction of B+ -> tau+ nu_tau decays with the semileptonic tagging method
  Phys. Rev. D 92, 051102(R) (2015) PRD Editors Suggestion.

• Search for B+ -> l+ nu gamma decays with hadronic tagging using the full Belle data sample
  Phys. Rev. D 91, 112009 (2015).

• Study of orbitally excited B mesons and evidence for a new B pi resonance
  Phys. Rev. D 90, 012013 (2014).

• Angular analysis of B0 -> phi K* decays and search for CP violation at Belle
  Phys. Rev. D 88, 072004 (2013).

• Search for B -> h(*) nu nubar with the full Belle data sample
  Phys. Rev. D 87, 111103 (2013).

• Measurement of CP-Violation Asymmetries in D0 -> K_S pi+ pi-
  Phys. Rev. D 86, 032007 (2012)

• First Observation of CP Violation and Improved Measurement of the Branching Fraction and Polarization of B0 -> D*+ D*- Decays
  Phys. Rev. D 86, 071103 (2012)

• Measurements of Fractions and Time-dependent CP Violating Asymmetries in B0 -> D(*)+- D-+
  Phys. Rev. D 85, 091106 (2012)

• Measurement of Bs0 -> Ds(*)+ Ds(*)- Branching Ratios
  Phys. Rev. Lett. 108, 201801 (2012)

• Measurement of the CP-Violating Phase beta_s in B0s -> J/psi phi Decays with the CDF II Detector
  Phys. Rev. D 85, 072002 (2012)

• Measurement of branching ratio and Bs0 lifetime in the decay Bs0 -> J/psi f0(980) at CDF
  Phys. Rev. D 84, 052012 (2011)

• A Hierarchical NeuroBayes-based Algorithm for Full Reconstruction of B Mesons at B Factories
  Nucl. Instrum. Meth. A 654:432-440 (2011)

• Measurements of the properties of Lambda_c(2595), Lambda_c(2625), Sigma_c(2455), and Sigma_c(2520) baryons
  Phys. Rev. D 84, 012003 (2011)

• Belle II Technical Design Report
  KEK Report 2010-1 (2010)

• Formulae for the Analysis of the Flavor-Tagged Decay B0s -> J/psi phi
  JHEP 1011:158 (2010)

• Precision Measurement of the X(3872) Mass in J/psi pi+ pi- Decays
  Phys. Rev. Lett. 103, 152001 (2009)

• Measurement of Resonance Parameters of Orbitally Excited Narrow B⁰ Mesons
  Phys. Rev. Lett. 102, 102003 (2009)

• Measurement of Lifetime and Decay-Width Difference in B⁰_s -> J/psi phi Decays
  Phys. Rev. Lett. 100, 121803 (2008)

• Observation of Orbitally Excited B_s Mesons
  Phys. Rev. Lett. 100, 082001 (2008)

• Analysis of the Quantum Numbers J^PC of the X(3872)
  Phys. Rev. Lett. 98, 132002 (2007)

• Observation of Bs Bsbar Oscillations
  Phys. Rev. Lett. 97, 242003 (2006)

• ALICE Physics Performance Report, Volume I
  J. Phys. G30, 1517 (2004)

Proceedings

• Belle II at the Start of Data Taking
  CHEP2018, Sofia, 9 - 19 Jul 2018

• Performance of the Belle II Conditions Database
  CHEP2018, Sofia, 9 - 19 Jul 2018

• Belle II virtual reality projects
  CHEP2018, Sofia, 9 - 19 Jul 2018

• The Belle II Software - From Detector Signals to Physics Result
  INSTR 2017, Novosibirsk, 27 Feb - 3 Mar 2017

• Belle II Software
  ACAT 2016, Valparaiso 18-22 Jan 2016

• New B -> D(*) tau nu result from Belle
  FPCP 2015, Nagoya, 25-29 May 2015

• Software Development at Belle II
  CHEP 2015, Okinawa, 13-17 Apr 2015

• First production with the Belle II distributed computing system
  CHEP 2013, Amsterdam, 14-18 Oct 2013

• Belle II Status and Plans
  Capri 2012, Anacapri, 11-13 Jun 2012

• Computing at Belle II
  CHEP 2012, New York, 21-25 May 2012

• Updated Search for B(s)->mu+mu- Decays at CDF
  EPS, Grenoble, 21-27 Jul, 2011

• Heavy Flavor Baryons at the Tevatron
  Hadron, Munich, 13-17 Jun, 2011

• Computing at Belle II
  CHEP2010, Taipei, 18-22 Oct 2010

• Bs Physics
  PIC, Karlsruhe, 1-4 Sep 2010

• Status of SuperKEKB and Belle II
  FPCP, Torino, 25-29 May 2010

• Upsilon Polarization Measurement at CDF
  DIS, Florence, 19-23 Apr 2010

• Search for New Physics in the Bs Sector at the Tevatron
  DIS, Madrid, 26-30 Apr 2009

• New Charmonium-like States at B-Factories
  DIS, Madrid, 26-30 Apr 2009

• Rare B and Charm Decays at the Tevatron
  Moriond QCD, La Thuile, 8-15 Mar 2008

• Lifetime Difference and CP Asymmetry in the B⁰_s -> J/psi phi decay
  SUSY, Karlsruhe, 26 Jul - 1 Aug 2007

• Studies of B States at the Tevatron
  La Thuile, 4-10 Mar 2007

• Bayesian approach for combined particle identification in ALICE experiment at LHC
  CHEP, Interlaken, 27 Sep - 1 Oct 2004

• Track reconstruction in high density environment
  CHEP, Interlaken, 27 Sep - 1 Oct 2004

• Open beauty photoproduction at HERA
  DIS, Liverpool, 25-30 Apr 2000