Tom Browder (University of Hawaii)

My research program is the Belle II experiment and Belle experiment at KEK in Tsukuba, JAPAN.
These experiments study CP Symmetry Violation (Matter-Antimatter Asymmetry) in the B Meson System and search for BSM (Beyond the Standard Model) physics. Belle provided experimental confirmation of Kobayashi and Maskawa's explanation of CP violation in the weak interaction and was recognized in the citation for the 2008 Nobel prize in Physics , which was awarded to Kobayashi, Maskawa and Nambu. In addition, I was Belle II spokesperson (2013-2019) and was deeply involved in the construction and commissioning of Belle-II, at the KEK Super B factory , with first circulating beams February-June 2016. Belle II roll-in took place in April 2017. with the first physics run (Phase 3) in April-June of 2019. (As of 2025, Belle II has integrated 0.67 ab^-1 of data.) From 2021-2025, I was Belle II Publications Committe chair.
I am also teaching undergraduate physics courses and supervising graduate students. I am searching for new graduate students.

Useful Links and Information

• Where is TEB now ? (my finger file)
• photo
• TEB's bookmarks
• University of Hawaii contributions to the BELLE experiment
• Back to the University of Hawaii High Energy Physics Group
• Back to the University of Hawaii Physics Department
  
  

  Belle Journal Publications

  Belle II Journal Publications

  Physics 274: Modern Physics (Fall 2025)

  Physics 610: Classical Mechanics (Summer 2025)

  Physics 481: Quantum Mechanics Part II (Spring 2026)

  Physics 696: High Energy Physics Journal Club (Fall 2025)

  Physics 690: Departmental Colloquium (Fall 2025)

  Physics 272: Electricity and Magnetism (Fall 2024)

  Physics 490: Particle Physics (Spring 2024)

  Physics 480L: Modern Physics Lab, (Fall 2018)

  Physics 481L: Modern Physics Lab (Spring 2022)

  Physics 485: Ethics for Physicists (TBA)

  Physics 310: Theoretical Mechanics I.

  Physics 311: Theoretical Mechanics II.

  Physics 170: Mechanics and Thermodynamics for Scientists and Engineers.

  Background Commissioning for Belle

  WWW and Physics for Students and Citzens (Physics Pedagogy)

  9th International workshop on Very High Energy Particle Astronomy
  Meeting organized by the University of Hawaii

  Joint Meeting of the Japan Physical Society (JPS) and Division of Particles and Fields (DPF)
  Meeting organized by the University of Hawaii in 2006

  Publications and Preprints

  • Implications of the evidence for direct CP violation in D->pi+ pi- decays
    Rahul Sinha, Thomas E Browder, N. G. Deshpande, Dibyakrupa Sahoo, Nita Sinha, https://arxiv.org/abs/2505.24388, submitted to Physical Review.

  • New Physics search via angular distributions of Bbar->D* (->D pi) tau (->l nu nubar) nu_tau decays
    Bhubanjyoti Bhattacharya, Thomas E Browder, Alakabha Datta, Tejhas Kapoor, Emi Kou, https://arxiv.org/abs/2411.09414, published as JHEP 04 (2025) 135

  • A new Monte Carlo Generator for BSM physics in B->K* l+ l- decays with an application to lepton Universality violation in angular distributions
    A. Sibidanov, T. E. Browder, S. Dubey, S. Kohani, R. Mandal, S. Sandilya, R. Sinha, and S. Vahsen, https://arxiv.org/abs/2203.06827,
    J. High Energ. Phys. 2024, 151 (2024)

  • Training Deep 3D Convolutional Neural Networks to Extract BSM Physics Parameters Directly from HEP Data: a Proof-of-Concept Study Using Monte Carlo Simulations,
    S. Dubey, T.E. Browder, S. Kohani, R. Mandal, A. Sibidanov, R. Sinha, https://arxiv.org/abs/2311.13060, under review.

  • Implications of the Delta A_FB anomaly in B->D*+ l- nu using a new Monte Carlo Event Generator
    Bhubanjyoti Bhattacharya, Thomas E Browder, Quinn Campagna, Alakabha Datta, Shawn Dubey, Lopamudra Mukherjee, Alexei Sibidanov, https://arxiv.org/abs/2206.11283, published as Phys. Rev. D 107, 015011 (2023)

  • Belle II Vision for High Energy Physics, US Belle II, paper submitted to the US National Academy of Sciences

  • US Belle II Executive Summary for the Snowmass Decadal Survey of High Energy Physics D. M. Asner et al. (US Belle II), https://arxiv.org/abs/2203.10203 (Proceedings of the 2022 Snowmass workshop)

  • A New Tool to search for physics beyond the Standard Model in B->D*+ l- nu
    Bhubanjyoti Bhattacharya, Thomas E Browder, Quinn Campagna, Alakabha Datta, Shawn Dubey, Lopamudra Mukherjee, Alexei Sibidanov, https://arxiv.org/abs/2203.07189 , submitted to the 2022 Snowmass Workshop but will not be published in the Proceedings.

  • Impact of B->K nu nubar measurements on beyond the Standard Model theories, Thomas E Browder, Nilendra G. Deshpande, Rusa Mandal and Rahul Sinha, Phys. Rev. D. 104, 053007 (2021)

  • Search for B_s^0 -->eta' X_s sbar at Belle Using a Semi-Inclusive Method , S. Dubey, T. E. Browder et al. (Belle collaboration), Phys. Rev. D 104, 012007 (2021)

  • Detectors for Extreme Luminosity: Belle II published as Nuclear Instrumentation and Methods in Physics Research A 907, 46 (2018) (I. Adachi, T. E. Browder, P. Krizan, S. Tanaka and Y. Ushiroda)

  • Signal of right-handed currents using B->K*l+l- observables at the kinematic endpoint arXiv:1603.04355, published as Physical Review D 95, 114006 (2017) (A. Karan, R. Mandal, A. K. Nayak, R. Sinha and T. E. Browder)

  • Report of the Quark Flavor Working Group (J. N. Butler et al., arXiv:1311.1076) Heavy quark physics contribution to Snowmass Proceedings

  • Physics Achievements of the Belle Experiment J. Brodzicka, T.E. Browder, K. Trabelsi et al., ArXiv:1212.5342, 119 pages, published in Progress in Theoretical and Experimental Physics (PTEP) by Oxford University Press.

  • First Observation of Radiative B->phi K^0 \gamma Decays and Measurements of their Time-Dependent CP Violation H. Sahoo, T.E. Browder et al. (The Belle collaboration), published in Physical Review D Rapid Communications 84, 071101 (2011).

  • First Measurement of Inclusive B -> X_s eta Decays K. Nishimura, T.E. Browder et al. (The Belle collaboration), Phys. Rev. Letters 105, 191803 (2010).

  • Measurements of time-dependent CP violation in B0 -> psi(2S) KS decays, H. Sahoo, T.E. Browder, K. Trabelsi et al. (The Belle collaboration), published in PRD(R) 77, 091103 (2008) (arXiv:0708.2604[hep-ex])

  • The Status of the KEK Super B Factory T.E. Browder (Published in the Proceedings of the 2nd Capri Workshop on Theory, Phenomenology and Experiments in Heavy Flavour Physics)

  • New Physics at a Super Flavor Factory T.E. Browder, T. Gershon, D. Pirjol, A. Soni and J. Zupan, hep-ph/0802.3201 (published in Reviews of Modern Physics, vol 81, 2009)

  • On the Physics Case of a Super Flavour Factory T.E. Browder, M. Ciuchini, T. Gershon, M. Hazumi, T. Hurth, Y. Okada, A. Stocchi, hep-ph/0710.3799; published as JHEP0802: 110 (2008)

  • Accurate Measurements of the D^0-D^0bar Mixing Parameters N. Sinha, R. Sinha, T.E. Browder, N. G. Deshpande and S. Pakvasa, hep-ph/0708.0454, published as Phys. Rev. Lett. 99: 262002 (2007)

  • Why a Super B Factory is needed T.E. Browder, Proceedings of the 1st Capri Workshop on Theory, Phenemonology and Experiments in Heavy Flavor Physics (2006); published in Nucl. Phys. Proc. Suppl. 163: 198 (2007)

  • Two topics in rare B decay T.E. Browder, Proceedings of the 1st Capri Workshop on Theory, Phenemonology and Experiments in Heavy Flavor Physics (2006); published in Nucl. Phys. Proc. Suppl. 163: 117 (2007).

  • Search for the h_c meson in B^+ ->h_c K^+ F. Fang, T.E. Browder et al. (Belle Collaboration), hep-ex/0605007, published in Physical Review D 74, 012007 (2006).

  • Search for New Physics at a Super B-factory T.E. Browder and A. Soni, hep-ph/0410192, published in Pramana 63, 1171-1194 (2004).

  • Prospects for Pentaquark Production at Meson Factories T.E. Browder, I. Klebanov and D. Marlow, hep-ph/0401115, Phys. Lett. B 587, 62 (2004).

  • Results on the CKM angle phi_1/beta T.E. Browder, hep-ex/0312024, published in Proceedings of the 2003 Lepton-Photon Symposium, World Scientific (2004).

  • Establishment of CP Violation in the B system T.E. Browder and R. Faccini, Annual Review of Nuclear and Particle Science, Vol 53, p 353-386 (2003).

  • Experimental Summary of the FPCP03 (Flavor Physics and CP Violation) Conference, Ecole Polytechnique, Paris, FRANCE, June 2003. T.E. Browder, To appear in the Proceedings

  • Measurement of Branching Fraction Ratios and CP Asymmetries in B+- ->D_CP K^+- S.K. Swain, T.E. Browder et al. (Belle Collaboration) hep-ex/0304032, published in PRD 68, 051101 (2003)

  • Comment on the new D_s^{(*)} pi^0 Resonances T.E. Browder, A Petrov, S. Pakvasa, hep-ph/0307054, Phys. Lett. B 578, 365 (2004)

  • Rare Decays T.E. Browder, Proceedings of the SLAC Summer Institute, Stanford, CA (2002).

  • Results on sin 2 phi_1 (alpha) from the B Factories T.E. Browder, Proceedings of the XXII Physics in Collision Conference, Stanford, CA (2002). Also available as SLAC-R-607

  • Measurement of the B0-B0bar Mixing Rate with B0(B0bar)-->D*+ pi- partial reconstruction (by Y. H. Zheng, T.E. Browder et al (Belle Collaboration), hep-ex/0211065, Phys. Rev. D 67, 092004 (2003))

  • Measurement of B+->eta_c K^(*) Branching Fractions by F. Fang, T. Hojo, T.E. Browder and M. Hazumi (Belle Collaboration), hep-ex/0208047, Phys. Rev. Lett. 90, 071801 (2003))

  • Observation of B+->p pbar K+ by T.E. Browder, F. Fang, C.H Huang, M.Z. Wang (Belle Collaboration), published in Phys. Rev. Lett. 88: 181803 (2002))

  • Results on CP Violation from Belle, by T. E. Browder, hep-ex/0112026, published in Proceedings of the 9th International Symposium on Heavy Flavor Physics, AIP 2001

  • Physics at the B Factories, hep-ex/0112027 by T. E. Browder, published in Proceedings of from the Smallest to the Largest Distances, held in Moscow, Russia, May 2001, in Surveys of High Energy Physics published by Gordon and Breach

  • Measuring beta in B ---> D(*)+ D(*)- K(S) Decays. by T.E. Browder, A. Datta, P.J. O'Donnell, S. Pakvasa. UH-511-930-99, hep-ph/9905425 (Published in Phys. Rev. D. 61, 054009)

  • Summary of KEK-B Commissioning (by K. Oide et al)

  • Observation of High Momentum B->eta' Decays (by T.E. Browder and Y. Li, hep-ex/9804018, published in Phys. Rev. Lett. 81: 1786 (1998))

  • Hadronic B Decays (by T.E. Browder, UH-511-890-97, Published in Proceedings of the 1997 Santa Barbara Heavy Flavors Workshop)

  • Overview of the Workshop on Backgrounds at the Machine-Detector Interface (by T.E. Browder and S. K. Sahu, Proceedings of the 1997 Hawaii Workshop on Backgrounds at the Machine-Detector Interface)

  • Proceedings of the 2nd Workshop on Backgrounds at the Machine-Detector Interface (Edited by T.E. Browder and S. K. Sahu, published by World Scientific)

  • Observation of Quasi-Inclusive B->eta' X_s Decays. (by T.E. Browder, Y. Li, (CLEO Collaboration), CLEO CONF 97-13, now published in Phys. Rev. Lett 81:1786 (1998))

  • CP Violation in Quasi-Inclusive B->K(*) X Decay (by T.E. Browder, A. Datta, X-G. He, and S. Pakavasa, Physical Review D 57, 6828 (1998).)

  • Search for b->s gluon from Inclusive B Decays to Etaprime and Ks. (CLEO CONF 96-18, by F. Li, Y. Li and T.E. Browder, submitted to the Warsaw ICHEP and DPF Conferences)

  • Measurement of B->phi X (CLEO CONF 95-3, by T.E. Browder, submitted to the EPS and LEPTON-PHOTON Conferences)

  • Search for B->phi X_s from b->s gluon transitions (CLEO CONF 95-8, by T.E. Browder and T. Skwarnicki, submitted to the EPS and LEPTON-PHOTON Conferences)

  • B Mesons: Review of B Physics (Published in Vol 35. of Progress in Nuclear and Particle Physics) (by T.E. Browder and K. Honscheid)

  • Hadronic Decays and Lifetimes of B and D Hadrons (UH-511-857-96, Proceedings of the 1996 ICHEP Conference in Warsaw, World Scientific.) (by T.E. Browder)

  • Results on QCD from the CLEO II Experiment (UH-511-862-96, Proceedings of the 1996 ICHEP Conference in Warsaw, World Scientific.) (by T.E. Browder)

  • Hadronic Decays of B Mesons (UH-511-863-96, Proceedings of the IInd International Conference on Radiative Corrections in Cracow, Poland) (by T.E. Browder)

  • B Factories and New Ideas for CP Violation (Proceedings of WHEPP4 Conference in Calcutta, India) (by T.E. Browder)

  • Rare and Hadronic B Decays (UH-511-836-95, Proceedings of the 1995 Brussels Europhysics Conference) (by T.E. Browder)

  • Lifetimes and Hadronic Decays of Charm and Beauty Hadrons (UH-515-848-96, published in the 1996 Edition of Annual Review of Nuclear and Particle Science) (by T.E. Browder, K. Honscheid and D. Pedrini)

  • Exclusive Hadronic B Decays to Charm and Charmonium Final States published as M. S. Alam et al., PRD 50, 43, (1994); (by T.E. Browder, K. Honscheid, J. Rodriguez et al)

  • Observation of $D^0\to K^+\pi^-$ published as D. Cinabro et al, PRL 72, 1406 (1994); (by T. E. Browder, T. Liu, H. Yamamoto et al)

  • B_s mixing and |V_ts/V_td| (by T.E. Browder and S. Pakvasa, PRD 52, 3123, 1995)

  • Experimental Implications of CP Violation and Large FSI in the Search for D0-D0bar Mixing (by T.E. Browder and S. Pakvasa, PLB 383, 475 (1996).)

  • Search for the $eta_c^{'}$ in 2 Photon Processes (by T. Barnes, T.E. Browder and S.F. Tuan, PLB 385, 391 (1996).)

    
    
    
    University of Hawaii/e-mail: teb#phys.hawaii.edu