https://doi.org/10.1140/epjc/s10052-021-09703-7
Review
Feebly-interacting particles: FIPs 2020 workshop report
1
Rudolf Peierls Centre for Theoretical Physics, University of Oxford, Oxford, UK
2
Department of Physics, Institute for Particle Physics Phenomenology, Durham University, Durham, UK
3
Department of Physics, Duke University, Durham, NC, USA
4
Department of Physics, Center for Cosmology and Particle Physics, New York University, New York, US
5
Instituut-Lorentz for Theoretical Physics, UniversiteitLeiden, Leiden, The Netherlands
6
Centro de Astropartículas y Física de Altas Energías (CAPA), Universidad de Zaragoza, Zaragoza, Spain
7
Instituto Galego de Física de Altas Enerxías, Universidade de Santiago de Compostela, Santiago, Spain
8
European Organization for Nuclear Research (CERN), Geneva, Switzerland
9
Centre for Cosmology, Particle Physics and Phenomenology, Université catholique de Louvain, Louvain-la-Neuve, Belgium
10
Division of Physics, Mathematics and Astronomy, California Institute of Technology, Pasadena, USA
11
Physical Sciences, Barry University, Miami Shores, USA
12
Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
13
Santa Cruz Institute for Particle Physics, University of California, Santa Cruz, USA
14
School of Physics and Astronomy, University of Birmingham, B15 2TT, Birmingham, UK
15
Department of Physics, University of Virginia, Charlottesville, VA, US
16
Institut de Física Corpuscular, CSIC/Universitat de València, Valencia, Spain
17
School of Physics and Astronomy and William I. Fine Theoretical Physics Institute, University of Minnesota, Minneapolis, USA
18
Perimeter Institute for Theoretical Physics, Waterloo, Canada
19
Institute for Theoretical Physics, Heidelberg University, Heidelberg, Germany
20
Institute for Theoretical Particle Physics and Cosmology, Aachen University, Aachen, Germany
21
Department of Astronomy and Astrophysics, University of Chicago and Kavli Institute for Cosmological Physics, Chicago, USA
22
Laboratori Nazionali di Frascati, INFN, Frascati (Rome), Italy
23
Royal Holloway, University of London, Egham Hill, Egham, UK
24
University of Massachusetts, Amherst, MA, USA
25
Dipartimento di Fisica e Astronomia, Universita‘ di Bologna, Bologna, Italy
26
INFN, Sezione di Firenze and University of Florence, Sesto Fiorentino, Italy
27
DESY, Deutsches Elektronen-Synchrotron (DESY), Hamburg, Germany
28
Niels Bohr Institute, Copenhagen University, Copenhagen, Denmark
29
Department of Physics, Princeton University, Princeton, USA
30
SLAC National Accelerator Laboratory, Menlo Park, USA
31
Institute of Physics, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
32
University of Illinois, Urbana, Champaign, USA
33
Physics Department, Technion, Institute of Technology, 3200003, Haifa, Israel
34
Kavli Institute for the Physics and Mathematics of the Universe (KIPMU), University of Tokyo, Tokyo, Japan
35
Department of Physics, Florida State University, Tallahassee, USA
36
High Energy Accelerator Research Organization (KEK), Tsukuba, Japan
37
Kavli Institute for Cosmological Physics, University of Chicago, Chicago, USA
ac
gaia.lanfranchi@lnf.infn.it
Received:
19
April
2021
Accepted:
23
September
2021
Published online:
19
November
2021
With the establishment and maturation of the experimental programs searching for new physics with sizeable couplings at the LHC, there is an increasing interest in the broader particle and astrophysics community for exploring the physics of light and feebly-interacting particles as a paradigm complementary to a New Physics sector at the TeV scale and beyond. FIPs 2020 has been the first workshop fully dedicated to the physics of feebly-interacting particles and was held virtually from 31 August to 4 September 2020. The workshop has gathered together experts from collider, beam dump, fixed target experiments, as well as from astrophysics, axions/ALPs searches, current/future neutrino experiments, and dark matter direct detection communities to discuss progress in experimental searches and underlying theory models for FIPs physics, and to enhance the cross-fertilisation across different fields. FIPs 2020 has been complemented by the topical workshop “Physics Beyond Colliders meets theory”, held at CERN from 7 June to 9 June 2020. This document presents the summary of the talks presented at the workshops and the outcome of the subsequent discussions held immediately after. It aims to provide a clear picture of this blooming field and proposes a few recommendations for the next round of experimental results.
© The Author(s) 2021
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