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Kai-Feng Chen


Name   陳凱風
 Kai-Feng Chen
Title   Professor
Education   Ph.D., National Taiwan University (2005)
Office   529
Tel   02-3366-5153
E-mail   kfjack@phys.ntu.edu.tw
Web  

 

Experiences
  • Chair of Particles & Fields Division, Physical Society of Taiwan (2024)
  • Top Physics Group Convener, CMS experiment (2021)
  • Distinguished Professor, Department of Physics, NTU (2020)
  • Professor, Department of Physics, NTU (2014)
  • B Physics Group Convener of the CMS experiment (2013)
  • Associate Professor, Department of Physics, NTU (2019)
  • DCPV/Rare Physics Group Convener, Belle experiment (2006)
  • Special Contract Postdoctoral Fellowship, National Science Council (2005)
Awards
  • MOST/NSTC Outstanding Research Award (2020)
  • NTU Outstanding Teaching Award (2017)
  • NTU Excellent Teaching Awards (2012/2015/2016
/2022/2023)
  • Golden-Jade Young Scientist Prize (2014)
  • Ta-You Wu Memorial Award (2012)
  • Foundation for the Advancement of Outstanding Scholarship Award (2010)
  • IUPAP Young Scientist Prize (2008)
Research
Experimental High Energy Physics
  • CMS Experiment at CERN, Geneva, Switzerland (since 2006)
  • E391a Experiment at KEK, Tsukuba, Japan (since 2005)
  • Belle Experiment at KEK, Tsukuba, Japan (since 1998)
Selected Publications
  1. K.-F. Chen, T. Mombächer. U. De Sanctis, Analysis of B(s)→μ+μ– Decays at the Large Hadron Collider, Symmetry 2024, 16(2), 251.
  2. The CMS Collaboration, Search of a Vector-Like Quark T’→tH in the di-photon final state, JHEP 09 (2023) 057.
  3. The CMS Collaboration, Measurement of the Bs→μ+μ– decay properties and search for the B0→μ+μ– decay in proton-proton collisions at 13 TeV, Phys. Lett. B 842 (2023) 137955.
  4. K.-F. Chen and R. Goldouzian, Tests of Charge-Parity Symmetry and Lepton Flavor Conservation in the top quark sector, Universe 2023, 9(2), 62.
  5. The CMS Collaboration, Search for CP violation using tt events in the lepton+jets channel in pp collisions at 13 TeV, JHEP 06 (2023) 081.
  6. The CMS Collaboration, Search for Flavor-Changing Neutral Current Interactions of the Top Quark and Higgs Boson in Final States with Two Photons in Proton-Proton Collisions at 13 TeV, Phys. Rev. Lett. 129 (2022) 032001.
  7. D. C. Hackett, C.-C. Hsieh, M. S. Albergo, D. Boyda, J.-W. Chen, K.-F. Chen, K. Cranmer, G. Kanwar and P. E. Shanahan, Flow-based sampling for multimodal distributions in lattice field theory, arXiv:2107.00734.
  8. K.-F. Chen, Y.-T. Chien, Deep Learning Jet Substructure from Two-Particle Correlation, Phys. Rev. D 101 (2020) 114025.
  9. The CMS Collaboration, Measurement of properties of Bs→μ+μ– decays and search for B0→μ+μ– with the CMS experiment, JHEP 04 (2020) 188.
  10. The CMS Collaboration, Observation of two excited Bc states and measurement of the Bc(2S) mass in pp collisions at 13 TeV. Phys. Rev. Lett., 122 (2019) 132001.
  11. The CMS Collaboration, Measurements of properties of the Higgs boson decaying to a W boson pair in pp collisions at 13 TeV, Phys. Lett. B 791 (2019) 96.
  12. The CMS Collaboration, Search for pair production of excited top quarks in the lepton+jets final state. Phys. Lett. B 778 (2018) 349.
  13. Cerri et al, Opportunities in Flavour Physics at the HL-LHC and HE-LHC, WG4 Yellow Report, arXiv:1812.07638 (2018).
  14. P. Chang, K.-F. Chen, W-S. Hou, Flavor physics and CP violation, Progress in Particle and Nuclear Physics 97 (2017) 261.
  15. The CMS Collaboration, Search for CP violation in ttbar production and decay in proton-proton collisions at 8 TeV. JHEP, 03, (2017) 101.
  16. The CMS Collaboration, Search for top quark decays via Higgs-boson-mediated flavor-changing neutral currents in pp collisions at 8 TeV. JHEP, 02, (2017) 79.
  17. The CMS Collaboration, Measurement of the total and differential inclusive B+ hadron cross sections in pp collisions at 13 TeV, Phys. Lett. B, 05 (2017) 074.
  18. The CMS Collaboration, Search for the production of an excited bottom quark decaying to tW in proton-proton collisions at 8 TeV, JHEP 01 (2016) 166.
  19. The CMS Collaboration, Search for vector-like charge 2/3 T quarks in proton-proton collisions at 8 TeV. Phys. Rev. D, 93 (2016) 012003.
  20. The CMS Collaboration, Search for pair-produced vector-like B quarks in proton-proton collisions at 8 TeV. Phys. Rev. D, 93 (2016) 112009.
  21. The CMS Collaboration, Measurement of the CP-violating weak phase φs and the decay width difference ΔΓs using the Bs→ J/ψφ(1020) decay channel in pp collisions at 8 TeV, Phys. Lett. B 757 (2016) 97.
  22. The CMS and LHCb Collaborations, Observation of the rare Bs→μ+μ– decay from the combined analysis of CMS and LHCb data, Nature 522 (2015) 68.
  23. CMS Collaboration, Technical Proposal for the Phase-II Upgrade of the CMS Detector, CERN-LHCC-2015-010, https://cds.cern.ch/record/2020886.
  24. The CMS collaboration, Search for pair production of excited top quarks in the lepton + jets final state, JHEP 06 (2014) 125.
  25. The CMS Collaboration, Search for flavor-changing neutral currents in top-quark decays t→Zq in pp collisions at 8 TeV, Phys. Rev. Lett. 112 (2014) 171802.
  26. K.-F. Chen, W.-S. Hou, C. Kao, M. Kohda, When Higgs meets the Top: Search for t→ch0 at the LHC, Phys. Lett. B 725 (2013) 378.
  27. The CMS Collaboration, Search for a new bottomonium state decaying to 
 Υ(1S)π+π– in pp collisions at 8 TeV, Phys. Lett. B. 727 (2013) 57.
  28. The CMS Collaboration, Angular analysis and branching ratio measurement of the decay B0→K*0μ+μ–, Phys. Lett. B. 727 (2013) 77.
  29. The CMS Collaboration, Measurement of the Bs→μ+μ– branching fraction and search for B0→μ+μ– with the CMS Experiment, Phys. Rev. Lett. 111 (2013) 101804.
  30. The CMS Collaboration, Measurement of the Λb lifetime in pp collisions at  7 TeV, JHEP 07 (2013) 163.
  31. The CMS Collaboration, Search for pair produced fourth-generation up-type quarks in pp collisions at 7 TeV with a lepton in the final state, Phys. Lett. B 718  (2012) 307.
  32. The CMS Collaboration, Search for heavy bottom-like quarks in 4.9 inverse femtobarns of pp collisions at 7 TeV, JHEP 05 (2012) 123.
  33. The CMS collaboration, Search for a Vector-like Quark with Charge 2/3 in t + Z Events from pp Collisions at 7 TeV, Phys. Rev. Lett. 107 (2011) 271802.
  34. The CMS collaboration, Search for a Heavy Bottom-like Quark in pp Collisions at 7 TeV, Phys. Lett. B 701 (2011) 204.
  35. K.-F. Chen, W.-S. Hou et al. (The Belle collaboration), Observation of an enhancement in e+e– → Υ(1S)π+π–, Υ(2S)π+π–, and Υ(3S)π+π– production around 10.89 GeV at Belle, Phys. Rev. D 82 (2010) 091106(R).
  36. Y.-C. Yung, Y. B. Hsiung, M.-L. Wu, K.-F. Chen et al. (The E391a collaboration), Search for a light pseudoscalar particle in the decay KL→π0π0 X, Phys. Rev. Lett. 102 (2009) 051802.
  37. J.-T. Wei, K.-F. Chen et al. (The Belle collaboration), Search for B→πℓ+ℓ– Decays at Belle, Phys. Rev. D 78 (2008) 011101(R).
  38. S.-W. Lin, Y. Unno, W.-S. Hou, P. Chang et al. (The Belle collaboration), Difference in direct CP violation between charged and neutral B meson decays, Nature 452 (2008) 332.
  39. K.-F. Chen, W.-S. Hou, M. Shapkin, A. Sokolov et al. (The Belle collaboration), Observation of anomalous Υ(1S) π+π– and Υ(2S) π+π– production near the Υ(5S) resonance, Phys. Rev. Lett. 100 (2008) 112001.
  40. K.-F. Chen et al. (The Belle collaboration), Search for B→h(*)νν Decays at Belle, Phys. Rev. Lett. 99 (2007) 221802.
  41. Y. Chao , K.-F. Chen, H. Miyake, O. Tajima, K. Trabelsi et al. (The Belle collaboration), Measurements of time-dependent CP violation in B→ωK0, f0(980)KS, KSπ0 and K+K–KS decays, Phys. Rev. D 76 (2007) 091103(R).
  42. K.-F. Chen, K.Hara, M.Hazumi, T.Higuchi, K.Miyabayashi, Y.Nakahama, K.Sumisawa, O.Tajima, Y.Ushiroda, Y.Yusa et al.(The Belle Collaboration), Observation of time-dependent CP violation in B0→η’K0 decays and improved measurements of CP asymmetries in B0→φK0, B0 → KSKSKS and B0→J/ψ K0 decays, Phys. Rev. Lett. 98, (2007) 031802.
  43. K­.-F. Chen, F. Fang, A. Garmash, K. Hara, M. Hazumi, T. Higuchi, H. Kakuno, A. Kusaka, T. Shibata, O. Tajima, K. Trabelsi and T. Ziegler et al. (The Belle Collaboration), Time­ dependent CP ­violating Asymmetries in b→sqq Transitions, Phys. Rev. D72,  (2005) 012004.
  44. K. Sumisawa et al. (The Belle Collaboration), Measurement of Time­Dependent CP­Violating Asymmetries in B0→KS KS KS Decay, Phys. Rev. Lett. 95, (2005) 061801.
  45. Y. Ushiroda et al. (The Belle Collaboration), Measurement of the Time­Dependent CP­Violating Asymmetry in B0→KSπ0γ Decay, Phys. Rev. Lett. 94, (2005) 231601.
  46. K.­-F. Chen et al. (The Belle Collaboration),  Measurement of Polarization and Triple­-product Correlations in B→φK* decays, Phys. Rev. Lett. 94, (2005) 221804.
  47. H. Kakuno, K. Hara, B.C.K. Casey, K.­-F. Chen, H. Hamasaki, M. Hazumi, T. Iijima, N. Katayama, T. Okabe, Y. Sakai, K. Sumisawae, J. Suzuki, T. Tomura, K. Ueno, C.­C. Wang and Y. Watanabe, Neutral B Flavor Tagging for the Measurement of Mixing-­induced CP Violation at Belle, Nucl. Instrum. Meth. A533, (2004) 516.
  48. K. Abe, et al.(The Belle Collaboration), Measurement of Time-­dependent CP-­violating Asymmetries in B0→φKS, K+K–KS and η'KS Decays, Phys. Rev. Lett. 91, (2003) 261602.
  49. K.­-F. Chen, A. Bozek, et al. (The Belle Collaboration), Measurement of Branching Fractions and Polarization in B→φK* Decays, Phys. Rev. Lett. 91, (2003) 201801.
  50. K. Abe, et al. (The Belle Collaboration), Study of Time­-dependent CP­-violating Asymmetries in b→sqq Decays, Phys. Rev. D67 (2003) 031102(R).
  51. K.-­F. Chen, K. Hara, et al. (The Belle Collaboration), Measurement of CP­-Violating Parameters in B→ η' K Decays, Phys. Lett. B546  (2002) 196.
  52. K. Abe, et al. (The Belle Collaboration), Observation of the Color-­suppressed Decay B0→D0π0, Phys. Rev. Lett. 88 (2002) 052002.
  53. K. Abe, et al. (The Belle Collaboration),  Search for Direct CP Violation in B→Kπ Decays, Phys. Rev. D64  (2001) 071101.
  54. K. Abe, et al. (The Belle Collaboration), Measurement of Branching Fractions for B→ππ, Kπ and KK Decays, Phys. Rev. Lett. 87 (2001) 101801.

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