Phenomenology of new physics beyond the Standard Model of particle physics
Models predicting long-lived particles (LLPs) that are able to explain neutrino masses and particle dark matter
Theoretical predictions and signals of new physics at colliders and other experiments
Long-lived particles as probes of dark sectors (2025-2029)- Funded by ANID FONDECYT Regular 1250135
Searching for new physics at the lifetime frontier (2022-2025)- Funded by ANID FONDECYT Iniciación 11220237
Phenomenology of long-lived particles and portals to new physics (2019-2022) - Funded by ANID FONDECYT Postdoctoral 3190051
Associate researcher at Millennium Institute for Subatomic Physics at the High Energy Frontier (SAPHIR)
Co-Investigator of Prof. Dr. Francisca Garay (PUC), ANID FONDECYT Regular, Long-lived particles as means of new physics in particle colliders (2024-2028)
Theory co-convenor, LHC-LLP Working Group, CERN (May 2022-Feb.2025)
Member of ANID Study Group in Gravitation and High Energy Physics, Chile (2022-2023)
Co-Investigator of Prof. Dr. Juan Carlos Helo, ANID FONDECYT Regular, Long-lived particles and neutrino mass models (2020-2024)
PhD
Supervisor of Mr. Paulo Areyuna at Pontificia Universidad Católica de Chile (ongoing)
Supervisor of Ms. Daniella Mora at Pontificia Universidad Católica de Chile (ongoing)
Co-supervisor of Mr. Fabián Hernández jointly with Prof. Dr. Alfonso Zerwekh at Universidad Técnica Federico Santa María (ongoing). Research led to JHEP09(2025)102
MSc
Supervisor of Mr. Manuel López at Pontificia Universidad Católica de Chile (ongoing)
Supervisor of Ms. Mariel Poduje jointly with Prof. Dr. Francisca Garay at Pontificia Universidad Católica de Chile (2024)
Thesis Title: “Long-Lived Heavy Neutral Leptons from Z decays at FCC-ee"
Co-supervisor of Mr. Bruno Zerega jointly with Prof. Dr. Francisca Garay at Pontificia Universidad Católica de Chile (2024)
Thesis Title: “Long-Lived Heavy Neutral Leptons with τ mixing at the FCC-ee"
Co-supervisor of Mr. Fabián Hernández jointly with Prof. Dr. Juan Carlos Helo at Universidad de La Serena (2022)
Thesis Title: “Light neutralinos at the LHC". Research led to JHEP 10, 095(2022)
BSc
Supervisor of Mr. Manuel López at Pontificia Universidad Católica de Chile (2024)
Thesis Title: “Long-lived dark mediators from a Higgs portal model”
Supervisor of Ms. Sofía Llanos at Pontificia Universidad Católica de Chile (2024)
Thesis Title: “MATHUSLA prospects for long-lived Heavy Neutral Leptons”
Supervisor of Mr. Luciano Meléndez at Pontificia Universidad Católica de Chile (2024)
Thesis Title: “Jets, displaced jets and collider observables”
Co-supervisor of Mr. Leonardo Parada jointly with Prof. Dr. Marco A. Díaz at Pontificia Universidad Católica de Chile (2020)
Thesis Title: “Bosón de Higgs doblemente cargado de larga vida en un modelo de triplete”
Postdocs
Sponsor of Dr. Bastián Díaz, ANID FONDECYT Postdoctoral, Exploring dark matter sectors (2024-2025)
Sponsor of Dr. Ivania Maturana Ávila, ANID FONDECYT Postdoctoral, Shining light on dark matter models (2021-2023)
All can be found on inSPIRE and arXiv
Probing light neutralinos from pair-produced sleptons with displaced vertices at the high-luminosity LHC, Giovanna Cottin, Juan Carlos Helo, Fabián Hernández-Pinto, Nicolás A. Neill, Zeren Simon Wang JHEP09(2025)102
Heavy neutral leptons and top quarks in effective field theory, R. Beltrán, G. Cottin, J. Günther, M. Hirsch, A. Titov, Z. S. Wang, JHEP 05 (2025) 238
Long-lived particle phenomenology in one-loop neutrino mass models with dark matter, Carolina Arbeláez, Giovanna Cottin, Juan Carlos Helo, Martin Hirsch, Téssio B. de Melo, JHEP 02 (2025) 049
Quark flavor violation and axion-like particles from top-quark decays at the LHC, Kingman Cheung, Fei-Tung Chung, Giovanna Cottin, Zeren Simon Wang, JHEP 07 (2024) 209
Reinterpretation of searches for long-lived particles from meson decays, R. Beltrán, G. Cottin, M. Hirsch, A. Titov and Z. S. Wang, JHEP 05 (2023) 031
Long-lived heavy neutral leptons with a displaced shower signature at CMS, G. Cottin, J.C. Helo, M. Hirsch, C. Peña, C. Wang, Si Xie, JHEP 02, 011 (2023)
Long-lived heavy neutral leptons from mesons in effective field theory, R. Beltrán, G. Cottin, J. C. Helo, M. Hirsch, A. Titov and Z. S. Wang, JHEP 01, 015 (2023)
Searching for light neutralinos with a displaced vertex at the LHC, G. Cottin, J. C. Helo, N. Neill, F. Hernández-Pinto and Z. S. Wang, JHEP 10, 095(2022)
Displaced Neutrino Jets at the LHeC, G. Cottin, O. Fischer, S. Mandal, M. Mitra and R. Padhan, JHEP 06, 168(2022)
Long-lived heavy neutral leptons at the LHC: four-fermion single-NR operators, R. Beltrán, G. Cottin, J. C. Helo, M. Hirsch, A. Titov and Z. S. Wang, JHEP 01, 044(2022)
Revisiting the scotogenic model with scalar dark matter, Ivania M. Ávila, G. Cottin, Marco A. Díaz, J.Phys.G 49, 6 065001 (2022)
Searching for light long-lived neutralinos at Super-Kamiokande, P. Candia, G. Cottin, A. Méndez, V. Muñoz, Phys.Rev.D 104, 055024 (2021)
Heavy neutral leptons in effective field theory and the high-luminosity LHC, G. Cottin, J. C. Helo, M. Hirsch, A. Titov and Z. S. Wang, JHEP 09, 039 (2021)
Collider Probes of Real Triplet Scalar Dark Matter, Cheng-Wei Chiang, Giovanna Cottin, Yong Du, Kaori Fuyuto and Michael Ramsey-Musolf, JHEP 01, 198 (2021)
Searching for long-lived particles beyond the Standard Model at the Large Hadron Collider, LLP community, J.Phys.G 47, 9 090501 (2020)
Displaced vertices as probes of sterile neutrino mixing at the LHC, G. Cottin, J. C. Helo, M. Hirsch, Phys. Rev. D 98,035012 (2018)
Reconstructing particle masses in events with displaced vertices, G. Cottin, JHEP 03, 137 (2018)
Searches for light sterile neutrinos with multitrack displaced vertices, G. Cottin, J.C. Helo and M. Hirsch, Phys. Rev. D 97, 055025 (2018)
Search for massive, long-lived particles using multitrack displaced vertices or displaced lepton pairs in pp collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector, ATLAS Collaboration, Phys. Rev. D 92, 072004 (2015)
Invited Seminar, The collider lifetime frontier in dark sector theories, BAUP Mexico, 5 August, 2025
Invited Seminar, Long-Lived Particles in Effective Field Theory, OFTE Seminar Series, Universidad Andrés Bello (UNAB), 18 June, 20205
The collider lifetime frontier in dark sector theories, HepUC Seminar Series, 17 June 2025
LLP2025: Fifteenth workshop of the Long-Lived Particle Community, Long-lived particles in a scotogenic-like model, IFIC, Valencia, Spain, 5 June 2025
SAPHIR ARM 2025: Unveiling the Unknown, Long-lived Particles @ PUC, January 29, 2025 (workshop organiser)
IX international conference on High Energy Particle and Nuclear Physics in the LHC Era (HEPNP2025), Displaced ALPs from top decays @ LHC, January 7, 2025
Invited Seminar, Displaced Collider Phenomenology, Theoretical Physics Seminar, Universidad San Sebastián (USS), 5 December 2024
Invited talk, XV Latin American Symposium on High Energy Physics (SILAFAE), Long-lived Particles, Cinvestav, Mexico City, 4 November 2024
Displaced ALPs from top decays @LHC, LLP2024: Fourteenth workshop of the Long-Lived Particle Community, University of Tokyo, July 5 2024
Invited Lectures on Phenomenology of New Physics at the first Online Conference for Women in Theoretical Physics from LATAM, March 4 2024.
Invited talk, A Long-lived Collaboration, HirschFest, IFIC Valencia, January 2024
The need for long-lived particle searches at the LHC and beyond, NYU Abu Dhabi Physics Seminar, October 11 2023
Long-lived Heavy Neutral Leptons at the LHC, NYU Abu Dhabi, HEP Group Seminar, October 10th 2023
Invited Seminar, Reinterpretation of Long-Lived Particle Searches at the LHC, UTFSM (online), Chile, August 30, 2023
SAPHIR Seminar, Example LLP models and Reinterpretations, August 7, 2023
Invited talk, 11th Large Hadron Collider Physics Conference, LLP Overview: Theory Perspective, Belgrade, Serbia, May 22, 2023
SAPHIR ARM 2023, Long-lived particle phenomenology, La Serena, Chile, January 2023
Invited talk, 8th International Conference on High Energy Physics in the LHC Era, Valparaíso, Chile, Long-lived Heavy Neutral Leptons at the LHC, January 13, 2023
IFIC Seminar, The need for long-lived particle searches at the LHC and beyond, December 13, 2022
Searching for long-lived particles at the LHC and beyond: Twelve workshop of the LLP Community, Long-Lived Heavy Neutral Leptons with a displaced shower signature, June 3, 2022
Searching for long-lived particles at the LHC and beyond: Tenth workshop of the LLP Community, Long-lived HNLs in NRSMEFT, November 12, 2021
Invited talk, Large Hadron Collider Physics Conference (LHCPC 2021), Searching for long-lived particles and Heavy Neutral Leptons: Theory perspective, June 7, 2021
HEP Weekly Seminar, Exotic Collider Probes of dark matter, Universidad Técnica Federico Santa María, Online, January 2021
La Parte y el Todo: Workshop on Advanced topics on High Energy Physics and Gravitation, Long-lived Particles at the Large Hadron Collider, Online, Chile, January 2021
New proposals to search for Long-lived Sterile Neutrinos at the LHC, Gravitículas Seminar, Pontifica Universidad Católica de Chile, Online, November 2020
Invited Seminar, Long-lived Sterile Neutrinos at the LHC, ACFI Seminar Series, University of Massachusetts Amherst, Online, October 2020
Invited talk, Heavy Neutral Leptons at HL-LHC with the CMS Muon Spectrometer, Dark Sectors and Light Long-Lived Particles, SNOWMASS Cross Frontier Meeting, Online, July 2020
Particle dark matter with exotic signatures at the LHC, Gravitículas Seminar, Pontificia Universidad Católica de Chile, June 25, 2020
Invited talk, Long-Lived Particles at the Large Hadron Collider, Colloquio Física UC Valparaiso, June 3, 2020 (video in Spanish here)
Invited Seminar, Searching for the Unknown at the Large Hadron Collider, FIC UAI, Data Science Seminar, May 14, 2020
Invited Seminar, Where may the new physics be hiding at the Large Hadron Collider? USACH Physics Seminar, April 29, 2020
Invited Seminar, Where may the new physics be hiding at the Large Hadron Collider? UAI Physics and Astronomy Seminar, April 15, 2020 (video in Spanish here)
Scalars 2025: Higgs Bosons and Cosmology, University of Warsaw, Poland, September 2025
Workshop Science Organizer, SAPHIR ARM 2025: Unveiling the Unknown, San Joaquín Campus, Pontificia Universidad Católica de Chile, Santiago, Chile. January 2025
LLP2024: Fourteenth workshop of the Long-Lived Particle Community, University of Tokyo, July 5 2024
Research Visit, Instituto de Física Corpuscular (IFIC), Valencia, Spain in the context of the HirschFest, January 2024
Research Visit at New York University Abu Dhabi, October 2023
Lecturer at the Third Winter school Topics on Graviticulas, for postgraduate students on High Energy Physics in Chile, August 2023
Lecturer at the Chilean School in Theoretical High Energy Physics (Escuela de Física Teórica de Altas Energía), at Universidad de Concepción, Chile, May 2023
Discussion Leader at the 11th CERN Latin-American School of High-Energy Physics (CLASHEP2023), March 2023, San Esteban, Valparaíso, Chile
Research Visit, University of La Serena, Chile, January 2023
Research Visit, Universidad Técnica Federico Santa María, January 2022. See https://www.institutosaphir.cl/reunion-fisica-teorica-saphir-utfsm/
Searching for long-lived particles at the LHC and beyond: Tenth workshop of the LLP Community, November 2021
Research Visit, University of La Serena, Chile, October 2021
Large Hadron Collider Physics Conference (LHCPC 2021), June 2021
La Parte y el Todo (The Part and the Whole): Workshop on Advanced topics on High Energy Physics and Gravitation, Afunalhue (Online), Chile, January 2021
Searching for long-lived particles at the LHC : Eight workshop of the LHC LLP Community, Online Worldwide, November 2020
Searching for long-lived particles at the LHC : Seventh workshop of the LHC LLP Community, Online Worldwide, May 2020
Research Visit, University of La Serena, Chile, December 2019
Searching for long-lived particles at the LHC : Sixth workshop of the LHC LLP Community, Ghent, November 2019
Long-lived particles and the third generation, Edinburgh, November 2019
Searching for long-lived particles at the LHC : Fifth workshop of the LHC LLP Community (remote)
Research Visit, University of La Serena, Chile, October 2018
ICHEP 2018, Seoul, Korea, July 2018
Research Visit, Korean Institute of Advanced Study (KIAS), Seoul, Korea, July 2018
Workshop on New Physics with Displaced Vertices, NCTS, Hsinchu, Taiwan, June 2018
Taiwan-Korea joint Workshop on Particle Physics, NCU, Zhongli, Taiwan, May, 2018
Searching for long-lived particles at the LHC: Third workshop of the LHC LLP Community, May 2018