Dr. W.J. (Wouter) Waalewijn
Faculteit der Natuurwetenschappen, Wiskunde en Informatica
ITF
Bezoekadres
- Science Park 904
- Kamernummer: C4.109
Postadres
- Postbus 94485
1090 GL Amsterdam
Contactgegevens
Social media
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Research
The Large Hadron Collider (LHC) is at the heart of the worldwide effort to uncover the fundamental laws of physics, and has already discovered the Higgs boson. My research focusses on QCD aspects of LHC collisions, which is important for searches for new physics and stringent tests of the Standard Model carried out at the LHC. Much of my work focusses on jets, which are sprays of energetic collimated hadrons (see image). They are copiously produced at the LHC and play a crucial role in many analyses. To describe these intrinsically multi-scale processes, I use effective field theory.
A selection of recent work:
- Extending the framework I developed for calculating track-based observables to high precision. Measurements based on tracks of charged particles benefit from superior angular resolution.
- Use power counting to remove redundancies in a basis of jet substructure observables.
- Studying the effect on the energy and direction of a jet due to "grooming", which removes various sources of contamination.
- Exploring the more robust Winner-Take-All scheme to e.g. study transverse momentum distributions of the constituents of the proton.
- A computer code to efficiently count operators in effective field theories.
Some earlier contributions to the field:
- The N-Jettiness observable, which is employed in high precision (NNLO) calculations to treat infrared divergences. It is also used to identify hadronic decays of heavy particles, which may prove crucial in uncovering new physics.
- The first precision calculation of Higgs+0 jets, which involved the introduction of beam functions. Many LHC analyses bin events by the number of jets, to improve the signal sensitivity.
- A study of the potential of the electric charge of a jet to characterize a new physics signal, and its calculation.
- A rigorous QCD analysis of double parton scattering, which has been modeled by Monte Carlo simulations without a solid field-theoretic description.
- Multi-differential resummation techniques (SCET+), reliably accounting for correlations between observables, hierarchies in jet angles and energies, etc.
A full list of my publications can be viewed on Inspire.
A Two Jet Event - ATLAS Experiment © 2013 CERN -
Biography
After studying physics and mathematics at Utrecht University, I went on to obtain a PhD at MIT and was a postdoc at UC San Diego. I started as a junior faculty member at the UvA in 2013 and am also affiliated with the Nikhef theory group. I have ongoing collaborations with colleagues at various institutions, including MIT, DESY, Yale, University of Vienna, Stoney Brook, Complutense Madrid and Zheijang University.
When I am not doing physics, I enjoy running, reading, and of course spending time with my lovely wife and kids.
MIT (from Prudential sky walk) -
Group and grants
Research group
- Uri Cohen (master student)
- Max Jaarsma (PhD student)
- Elia Samuel (master student)
Grants
- SPARC (2019-2021)
- NWO Projectruimte (2018-2022)
- ERC Starting Grant (2016-2021)
- MISTI Global Seed Fund (2015-2016)
- Veni (Lisa Zeune, 2015-2017)
- Marie Curie Fellowship (2013-2015)
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Publicaties
2022
Cal, P., Lee, K., Ringer, F., & Waalewijn, W. J. (2022). The soft drop momentum sharing fraction zg beyond leading-logarithmic accuracy. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 833, [137390]. https://doi.org/10.1016/j.physletb.2022.137390 [details]- Cal, P., Thaler, J., & Waalewijn, W. J. (2022). Power counting energy flow polynomials. Journal of High Energy Physics, 2022(9), [21]. https://doi.org/10.1007/JHEP09(2022)021 [details]
- Jaarsma, M., Li, Y., Moult, I., Waalewijn, W., & Zhu, H. X. (2022). Renormalization group flows for track function moments. Journal of High Energy Physics, 2022(6), [139]. https://doi.org/10.1007/JHEP06(2022)139 [details]
- Li, Y., Moult, I., Schrijnder Van Velzen, S., Waalewijn, W. J., & Zhu, H. X. (2022). Extending Precision Perturbative QCD with Track Functions. Physical Review Letters, 128(18), [182001]. https://doi.org/10.1103/PhysRevLett.128.182001 [details]
2021
- Chien, Y-T., Rahn, R., Schrijnder van Velzen, S., Shao, D. Y., Waalewijn, W. J., & Wu, B. (2021). Recoil-free azimuthal angle for precision boson-jet correlation. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 815, [136124]. https://doi.org/10.1016/j.physletb.2021.136124 [details]
- Laenen, E., Sinninghe Damsté, J., Vernazza, L., Waalewijn, W., & Zoppi, L. (2021). Towards all-order factorization of QED amplitudes at next-to-leading power. Physical Review D, 103(3), [034022]. https://doi.org/10.1103/PhysRevD.103.034022 [details]
- Makris, Y., Ringer, F., & Waalewijn, W. J. (2021). Joint thrust and TMD resummation in electron-positron and electron-proton collisions. Journal of High Energy Physics, 2021(2), [70]. https://doi.org/10.1007/JHEP02(2021)070 [details]
2020
- Basdew-Sharma, A., Herzog, F., Schrijnder van Velzen, S., & Waalewijn, W. J. (2020). One-loop jet functions by geometric subtraction. Journal of High Energy Physics, 2020(10), [118]. https://doi.org/10.1007/JHEP10(2020)118 [details]
- Cal, P., Lee, K., Ringer, F., & Waalewijn, W. J. (2020). Jet energy drop. Journal of High Energy Physics, 2020(11), [12]. https://doi.org/10.1007/JHEP11(2020)012 [details]
- Cal, P., Neill, D., Ringer, F., & Waalewijn, W. J. (2020). Calculating the angle between jet axes. Journal of High Energy Physics, 2020(4), [211]. https://doi.org/10.1007/JHEP04(2020)211 [details]
- Marinissen, C. B., Rahn, R., & Waalewijn, W. J. (2020). …, 83106786, 114382724, 1509048322, 2343463290, 27410087742,. efficient Hilbert series for effective theories. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 808, [135632]. https://doi.org/10.1016/j.physletb.2020.135632 [details]
- Scott, D. J., & Waalewijn, W. J. (2020). The leading jet transverse momentum in inclusive jet production and with a loose jet veto. Journal of High Energy Physics, 2020(3), [159]. https://doi.org/10.1007/JHEP03(2020)159 [details]
2019
- Cal, P., Ringer, F., & Waalewijn, W. J. (2019). The jet shape at NLL′. Journal of High Energy Physics, 2019(5), [143]. https://doi.org/10.1007/JHEP05(2019)143 [details]
- Gutierrez-Reyes, D., Scimemi, I., Waalewijn, W. J., & Zoppi, L. (2019). Studying transverse momentum distributions with jets at N3LL. Proceedings of Science, 352. https://doi.org/10.48550/arXiv.1907.09576, https://doi.org/10.22323/1.352.0144
- Gutierrez-Reyes, D., Scimemi, I., Waalewijn, W. J., & Zoppi, L. (2019). Transverse momentum dependent distributions in e+e− and semi-inclusive deep-inelastic scattering using jets. Journal of High Energy Physics, 2019(10), [31]. https://doi.org/10.1007/JHEP10(2019)031 [details]
- Lustermans, G., Michel, J. K. L., Tackmann, F. J., & Waalewijn, W. J. (2019). Joint two-dimensional resummation in qT and 0-jettiness at NNLL. Journal of High Energy Physics, 2019(3), [124]. https://doi.org/10.1007/JHEP03(2019)124 [details]
- Lustermans, G., Papaefstathiou, A., & Waalewijn, W. J. (2019). How much joint resummation do we need? Journal of High Energy Physics, 2019(10), [130]. https://doi.org/10.1007/JHEP10(2019)130 [details]
- Neill, D., & Waalewijn, W. J. (2019). Entropy of a Jet. Physical Review Letters, 123(14), [142001]. https://doi.org/10.1103/PhysRevLett.123.142001 [details]
- Neill, D., Papaefstathiou, A., Waalewijn, W. J., & Zoppi, L. (2019). Phenomenology with a recoil-free jet axis: TMD fragmentation and the jet shape. Journal of High Energy Physics, 2019(1), [67]. https://doi.org/10.1007/JHEP01(2019)067 [details]
2018
- Fornal, B., Manohar, A. V., & Waalewijn, W. J. (2018). Electroweak gauge boson parton distribution functions. Journal of High Energy Physics, 2018(5), [106]. https://doi.org/10.1007/JHEP05(2018)106 [details]
- Gutierrez-Reyes, D., Scimemi, I., Waalewijn, W. J., & Zoppi, L. (2018). Transverse-Momentum-Dependent Distributions with Jets. Physical Review Letters, 121(16), [162001]. https://doi.org/10.1103/PhysRevLett.121.162001 [details]
- Manohar, A. V., & Waalewijn, W. J. (2018). Electroweak logarithms in inclusive cross sections. Journal of High Energy Physics, 2018(8), [137]. https://doi.org/10.1007/JHEP08(2018)137 [details]
- Procura, M., Waalewijn, W. J., & Zeune, L. (2018). Joint resummation of two angularities at next-to-next-to-leading logarithmic order. Journal of High Energy Physics, 2018(10), [098]. https://doi.org/10.1007/JHEP10(2018)098 [details]
2017
- Bertolini, D., Kolodrubetz, D., Neill, D., Pietrulewicz, P., Stewart, I. W., Tackmann, F. J., & Waalewijn, W. J. (2017). Soft functions for generic jet algorithms and observables at hadron colliders. Journal of High Energy Physics, 2017(7), [99]. https://doi.org/10.1007/JHEP07(2017)099 [details]
- Elder, B. T., Procura, M., Thaler, J., Waalewijn, W. J., & Zhou, K. (2017). Generalized Fragmentation Functions for Fractal Jet Observables. The Journal of High Energy Physics, 2017(6), [85]. https://doi.org/10.1007/JHEP06(2017)085 [details]
- Kang, Z-B., Ringer, F., & Waalewijn, W. J. (2017). The energy distribution of subjets and the jet shape. Journal of High Energy Physics, 2017(7), [64]. https://doi.org/10.1007/JHEP07(2017)064 [details]
- Mo, J., Tackmann, F. J., & Waalewijn, W. J. (2017). A case study of quark-gluon discrimination at NNLL' in comparison to parton showers. European Physical Journal C, 77(11), [770]. https://doi.org/10.1140/epjc/s10052-017-5365-9 [details]
- Neill, D., Scimemi, I., & Waalewijn, W. J. (2017). Jet axes and universal transverse-momentum-dependent fragmentation. The Journal of High Energy Physics, 2017(4), [20]. https://doi.org/10.1007/JHEP04(2017)020 [details]
2016
- Kasemets, T., Waalewijn, W. J., & Zeune, L. (2016). Calculating soft radiation at one loop. The Journal of High Energy Physics, 2016(3), [153]. https://doi.org/10.1007/JHEP03(2016)153 [details]
- Kolodrubetz, D. W., Pietrulewicz, P., Stewart, I. W., Tackmann, F. J., & Waalewijn, W. J. (2016). Factorization for jet radius logarithms in jet mass spectra at the LHC. The Journal of High Energy Physics, 2016(12), [54]. https://doi.org/10.1007/JHEP12(2016)054 [details]
- Lustermans, G., Waalewijn, W. J., & Zeune, L. (2016). Joint transverse momentum and threshold resummation beyond NLL. Physics Letters B, 762, 447-454. https://doi.org/10.1016/j.physletb.2016.09.060 [details]
- Moult, I., Stewart, I. W., Tackmann, F. J., & Waalewijn, W. J. (2016). Employing helicity amplitudes for resummation in scet. In E. Auge, J. Dumarchez, & J. Tran Thanh Van (Eds.), Proceedings of the 51st Rencontres de Moriond - 2016 QCD and High Energy Interactions (pp. 123-126). ARISF.
- Pietrulewicz, P., Tackmann, F. J., & Waalewijn, W. J. (2016). Factorization and resummation for generic hierarchies between Jets. The Journal of High Energy Physics, 2016(8), [2]. https://doi.org/10.1007/JHEP08(2016)002 [details]
- Tackmann, F. J., Waalewijn, W. J., & Zeune, L. (2016). Impact of jet veto resummation on slepton searches. The Journal of High Energy Physics, 2016(7), [119]. https://doi.org/10.1007/JHEP07(2016)119 [details]
2015
- Adams, D., et al., U., & Waalewijn, W. (2015). Towards an understanding of the correlations in jet substructure: Report of BOOST2013, hosted by the University of Arizona, 12th-16th of August 2013. European Physical Journal C, 75(9), [409]. https://doi.org/10.1140/epjc/s10052-015-3587-2 [details]
- Moult, I., Stewart, I. W., Tackmann, F. J., & Waalewijn, W. J. (2015). Employing Helicity Amplitudes for Resummation. Physical Review D. Particles and Fields, 93(9), [094003]. https://doi.org/10.1103/PhysRevD.93.094003 [details]
- Procura, M., Waalewijn, W. J., & Zeune, L. K. (2015). Resummation of double-differential cross sections and fully-unintegrated parton distribution functions. The Journal of High Energy Physics, 2015(2), [117]. https://doi.org/10.1007/JHEP02(2015)117 [details]
- Stewart, I. W., Tackmann, F. J., & Waalewijn, W. J. (2015). Dissecting Soft Radiation with Factorization. Physical Review Letters, 114(9), [092001]. https://doi.org/10.1103/PhysRevLett.114.092001 [details]
- Waalewijn, W. J. (2015). Dissecting Soft Radiation with Factorization. In K. Kutak, R. Maciula, A. M. Moraes, & A. Szczurek (Eds.), Proceedings of the 6th International Workshop on Multiple Partonic Interactions at the LHC: MPI@LHC 2014: 3-7 November, 2014 Kraków, Poland (pp. 42). Krakow: Polish Academy of Arts and Science. [details]
2014
- Jenkins, A. E., Manohar, A. V., Waalewijn, W. J., & Yadav, A. P. S. (2014). Gravitational Lensing of the CMB: a Feynman Diagram Approach. Physics Letters B, 736, 6-10. https://doi.org/10.1016/j.physletb.2014.07.002 [details]
- Jenkins, E. E., Manohar, A. V., Waalewijn, W. J., & Yadav, A. P. S. (2014). Higher-Order Gravitational Lensing Reconstruction using Feynman Diagrams. Journal of Cosmology and Astroparticle Physics, 2014, 024. https://doi.org/10.1088/1475-7516/2014/09/024 [details]
- Larkoski, A. J., Thaler, J., & Waalewijn, W. J. (2014). Gaining (Mutual) Information about Quark/Gluon Discrimination. The Journal of High Energy Physics, 2014(11), 129. https://doi.org/10.1007/JHEP11(2014)129 [details]
- Ritzmann, M., & Waalewijn, W. J. (2014). Fragmentation in Jets at NNLO. Physical Review D. Particles, Fields, Gravitation, and Cosmology, 90, 054029. https://doi.org/10.1103/PhysRevD.90.054029 [details]
2013
- Chang, H. M., Manohar, A. V., & Waalewijn, W. J. (2013). Double parton correlations in the bag model. Physical Review D - Particles, Fields, Gravitation and Cosmology, 87(3), [034009]. https://doi.org/10.1103/PhysRevD.87.034009
- Chang, H. M., Procura, M., Thaler, J., & Waalewijn, W. J. (2013). Calculating track thrust with track functions. Physical Review D - Particles, Fields, Gravitation and Cosmology, 88(3), [034030]. https://doi.org/10.1103/PhysRevD.88.034030
- Chang, H. M., Procura, M., Thaler, J., & Waalewijn, W. J. (2013). Calculating track-based observables for the LHC. Physical Review Letters, 111(10), [102002]. https://doi.org/10.1103/PhysRevLett.111.102002
- Jain, A., Procura, M., Shotwell, B., & Waalewijn, W. J. (2013). Fragmentation with a cut on thrust: Predictions for B factories. Physical Review D - Particles, Fields, Gravitation and Cosmology, 87(7), [074013]. https://doi.org/10.1103/PhysRevD.87.074013
- Jouttenus, T. T., Stewart, I. W., Tackmann, F. J., & Waalewijn, W. J. (2013). Jet mass spectra in Higgs boson plus one jet at next-to-next-to-leading logarithmic order. Physical Review D - Particles, Fields, Gravitation and Cosmology, 88(6), [054031]. https://doi.org/10.1103/PhysRevD.88.054031
- Krohn, D., Schwartz, M. D., Lin, T., & Waalewijn, W. J. (2013). Jet charge at the LHC. Physical Review Letters, 110(21), [212001]. https://doi.org/10.1103/PhysRevLett.110.212001
2012
- Jain, A., Procura, M., & Waalewijn, W. J. (2012). Fully-unintegrated parton distribution and fragmentation functions at perturbative k⊥. Journal of High Energy Physics, 2012(4), [132]. https://doi.org/10.1007/JHEP04(2012)132
- Jouttenus, T. T., Stewart, I. W., Tackmann, F. J., & Waalewijn, W. J. (2012). The soft function for exclusive N-jet production at hadron colliders. In 19th Particles and Nuclei International Conference, PANIC11 (pp. 803-805). (AIP Conference Proceedings; Vol. 1441). AIP Publishing. https://doi.org/10.1063/1.3700685
- Manohar, A. V., & Waalewijn, W. J. (2012). QCD analysis of double parton scattering: Spin and color correlations, interference effects, and evolution. Physical Review D - Particles, Fields, Gravitation and Cosmology, 85(11), [114009]. https://doi.org/10.1103/PhysRevD.85.114009
- Manohar, A. V., & Waalewijn, W. J. (2012). What is double parton scattering? Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 713(3), 196-201. https://doi.org/10.1016/j.physletb.2012.05.044
- Procura, M., & Waalewijn, W. J. (2012). Fragmentation in jets: Cone and threshold effects. Physical Review D - Particles, Fields, Gravitation and Cosmology, 85(11), [114041]. https://doi.org/10.1103/PhysRevD.85.114041
- Waalewijn, W. J. (2012). Calculating the charge of a jet. Physical Review D - Particles, Fields, Gravitation and Cosmology, 86(9), [094030]. https://doi.org/10.1103/PhysRevD.86.094030
2011
- Berger, C. F., Marcantonini, C., Stewart, I. W., Tackmann, F. J., & Waalewijn, W. J. (2011). Higgs production with a central jet veto at NNLL+NNLO. Journal of High Energy Physics, 2011(4), [92]. https://doi.org/10.1007/JHEP04(2011)092
- Fuhrer, A., Manohar, A. V., & Waalewijn, W. J. (2011). Electroweak radiative corrections to Higgs production via vector boson fusion using soft-collinear effective theory. Physical Review D - Particles, Fields, Gravitation and Cosmology, 84(1), [013007]. https://doi.org/10.1103/PhysRevD.84.013007
- Stewart, I. W., Tackmann, F. J., & Waalewijn, W. J. (2011). Beam thrust cross section for Drell-Yan production at next-to-next-to- leading-logarithmic order. Physical Review Letters, 106(3), [032001]. https://doi.org/10.1103/PhysRevLett.106.032001
2010
- Stewart, I. W., Tackmann, F. J., & Waalewijn, W. J. (2010). Factorization at the LHC: From parton distribution functions to initial state jets. Physical Review D - Particles, Fields, Gravitation and Cosmology, 81(9), [094035]. https://doi.org/10.1103/PhysRevD.81.094035
- Stewart, I. W., Tackmann, F. J., & Waalewijn, W. J. (2010). N jettiness: An inclusive event shape to veto jets. Physical Review Letters, 105(9), [092002]. https://doi.org/10.1103/PhysRevLett.105.092002
- Stewart, I. W., Tackmann, F. J., & Waalewijn, W. J. (2010). The quark beam function at NNLL. Journal of High Energy Physics, 2010(9), [5]. https://doi.org/10.1007/JHEP09(2010)005
2009
- Waalewijn, W. J. (2009). Chiral anomaly in soft collinear effective theory. Physical Review D - Particles, Fields, Gravitation and Cosmology, 79(3), [036003]. https://doi.org/10.1103/PhysRevD.79.036003
2012
- Stewart, I. W., Tackmann, F. J., & Waalewijn, W. J. (2012). Combining fixed-order helicity amplitudes with resummation using SCET. Paper presented at 11th DESY Workshop on Elementary Particle Physics - Loops and Legs in Quantum Field Theory, LL 2012, Wernigerode, Germany.
2021
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Cal, P., Lee, K., Ringer, F., & Waalewijn, W. J. (2022). The soft drop momentum sharing fraction zg beyond leading-logarithmic accuracy. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 833, [137390].