Christoph Schwanda
Priv.-Doz. DI Dr.
Deputy director

Christoph Schwanda
Priv.-Doz. DI Dr.
Deputy director
- Group Leader Belle
- Belle
- +43 (1) 51581 - 2802
- Christoph.Schwanda(at)oeaw.ac.at
- Postsparkasse
- 3rd floor
Biographical sketch
Positions
- since 2006: Belle/Belle II Research Group leader, HEPHY
- 2003 - 2006: Postdoctoral Researcher, HEPHY
- 2001 - 2003: JSPS Postdoctoral Fellow, High Energy Accelerator Research Organization (KEK), Japan
Education
- 1999 - 2001: Doctoral studies at the DELPHI experiment, CERN, Switzerland
- 1992 - 1998: Undergraduate studies in Physics, Vienna University of Technology, Austria
Research interests
The focus of my work are the Belle and Belle II experiments at the Japanese research lab KEK. In Belle I am leading the physics group for semileptonic and leptonic B meson decays, which deals with the determination of the Cabibbo-Kobayashi-Maskawa matrix elements |Vcb| and |Vub| but also with (semi-) tauonic decays. In Belle II I am leading the collaboration for the design and construction of the silicon strip detector of the experiment.
Publications
- Operational experience and performance of the Silicon Vertex Detector after the first long shutdown of Belle II. / BelleIISVDCollaboration.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 1081, 170834, 01.2026. - Observation of the decays B<SUP>+</SUP> → Σ<sub>c</sub>(2455)<SUP>++</SUP>(Ξ)over-bar<sub>c</sub><SUP>-</SUP> and B<SUP>0</SUP> → Σ<sub>c</sub> (2455)<SUP>0</SUP>(Ξ)over-bar<sub>c</sub><SUP>0</SUP> / Belle Belle II Collaborations.
In: Physical Review D, Vol. 112, No. 5, L051101, 05.09.2025. - Search for lepton flavor-violating decay modes <i>B</i><SUP>0</SUP><i>→ K</i><SUP>*0</SUP><i>τ</i><SUP><i>±</i></SUP><i>ℓ</i><SUP>∓</SUP> (<i>ℓ</i> = <i>e, μ</i>) with hadronic B-tagging at Belle and Belle II. / Belle Belle II Collaborations.
In: JOURNAL OF HIGH ENERGY PHYSICS, No. 8, 184, 22.08.2025. - Search for Lepton-Flavor-Violating Decay Modes <i>B</i><SUP>0</SUP> → <i>K<sub>S</sub></i><SUP>0</SUP>τ<SUP>∓</SUP> <i>l</i><SUP>±</SUP> with Hadronic B Tagging at Belle and Belle II. / Belle Collaboration; Belle II Collaboration.
In: Physical Review Letters, Vol. 135, No. 4, 041801, 25.07.2025. - Measurement of the time-integrated <i>CP</i> asymmetry in <i>D</i><SUP>0</SUP> → <i>K</i><sub>S</sub><SUP>0</SUP> <i>K</i><sub>S</sub><SUP>0</SUP> decays using opposite-side flavor tagging at Belle and Belle II. / Belle Collaboration; Belle II Collaboration.
In: Physical Review D, Vol. 112, No. 1, 012017, 21.07.2025. - Model-independent measurement of D<SUP>0</SUP>-(D)over-bar<SUP>0</SUP> mixing parameters in D<SUP>0</SUP> → K<sub>S</sub><SUP>0</SUP>π<SUP>+</SUP>π<SUP>-</SUP> decays at Belle and Belle II. / Belle Collaboration; Belle II Collaboration.
In: Physical Review D, Vol. 111, No. 11, 112011, 26.06.2025. - Determination of |V<sub>ub</sub>| from simultaneous measurements of untagged B<SUP>0</SUP> → π<SUP>-</SUP> l<SUP>+</SUP> ν<sub>l</sub> and B<SUP>+</SUP> → ρ<SUP>0</SUP>l<SUP>+</SUP> ν<sub>l</sub> decays. / Belle II Collaboration.
In: Physical Review D, Vol. 111, No. 11, 112009, 26.06.2025. - Observations of the singly Cabibbo-suppressed decays Ξ<i><sub>c</sub></i><SUP>+</SUP> → <i>pK<sub>S</sub></i><SUP>0</SUP>, Ξ<i><sub>c</sub></i><SUP>+</SUP> → Λπ<SUP>+</SUP>, and Ξ<i><sub>c</sub></i><SUP>+</SUP> →Σ<SUP>0</SUP>π<SUP>+</SUP> at Belle and Belle II. / Belle Collaboration; Belle Collaboration; Belle II Collaboration.
In: Journal of High Energy Physics, No. 3, 61, 11.03.2025. - Observation of Ω(2012)<SUP>-</SUP> Ξ(1530) (K)over-bar and measurement of the effective couplings of Ω(2012)<SUP>-</SUP> - to Ξ(1530) (K)over-bar and Ξ(1530) (K)over-bar. / Belle Belle II Collaborations.
In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 860, 139224, 01.2025. - Belle-II VXD radiation monitoring and beam abort with sCVD diamond sensors. / Adamczyk, K.; Aihara, H.; Angelini, C. et al.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 824, 11.07.2016, p. 480-482. - Measurement of the branching ratio of (B)over-bar(0) -> D*(+)tau(-)(nu)over-bar(tau) relative to (B)over-bar(0) -> D*(+)l(-)(nu)over-bar(l) decays with a semileptonic tagging method. / Sato, Y.; Iijima, T.; Adamczyk, K. et al.
In: Physical Review D, Vol. 94, No. 7, 27.06.2016, p. ARTN 072007. - Measurement of D-0-(D)over-bar(0) mixing and search for CP violation in D-0 -> K+K-, pi(+)pi(-) decays with the full Belle data set. / Staric, M.; Abdesselam, A.; Adachi, I. et al.
In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 753, 15.02.2016, p. 412-418. - Measurement of the ratio B(D0->pi+pi-pi0)/B(D0->K-pi+pi0) and the time-integrated CP asymmetry in D0->pi+pi-pi0. / Arinstein, K.; Adachi, I.; Aihara, H. et al.
In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 662, No. 2, 29.02.2008, p. 102-110. - Measurements of branching fractions and q**2 distributions for B ---> pi l nu and B ---> rho l nu decays with B ---> D(*) l nu decay tagging. / Hokuue, T.; Abe, K.; Adachi, I. et al.
In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 648, 06.03.2007, p. 139-148. - Measurement of Inclusive Ds, D0, and J/psi Rates and Determination of the B<sub>s</sub><sup>(*)</sup>[overline B]<sub>s</sub><sup>(*)</sup> Production Fraction in b[overline b] Events at the Upsilon(5S) Resonance. / Drutskoy, A.; Abe, K.; Adachi, I. et al.
In: Physical Review Letters, Vol. 98, 29.01.2007, p. 052001.