FIPs 2020 - Feebly Interacting Particles 2020

31 Aug 2020, 14:00 → 4 Sept 2020, 18:00 Europe/Zurich

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Registered participants will receive by email news about the event and details for the virtual connection.

Main Meeting: https://cern.zoom.us/j/92217902645
(protected - registered participants will get the password by email)

Coffee break Room: https://cern.zoom.us/j/91635182950
(protected - registered participants will get the password by email)

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Feebly Interacting Particles (FIPs) are any new physics with coupling <<< 1.

With the establishment and maturation of the experimental programs searching for strongly-coupled physics at the LHC, there is an increasing interest in the broader particle and astrophysics community for feebly-interacting particles as a paradigm complementary to the strongly interacting sector at the TeV (or beyond) scale.

There are a multitude of initiatives that reflect the profound interest into this emerging field, including the LHC Long-Lived Particle Community workshops and white paper, the Physics Beyond Colliders initiative at CERN, recent studies for present and future neutrino experiments, and the recently published Briefing Book of the European Strategy update.

As a result, the time is ideal to hold a workshop fully dedicated to FIPs.

The main goal of the workshop will be to bring together experts from collider, beam dump, fixed target, astrophysics, axions/ALPs searches; current/future neutrino experiments; and dark matter direct and indirect detection communities to discuss progress in experimental searches and underlying theory models and to enhance the exchange and cross-fertilization across different fields.

The following topics will be addressed:

• Standard Model problems and FIPs from theoretical perspectives
• Dark matter: what we know about it from a cosmological viewpoint, overview of models, status and prospects of collider, direct, and indirect detection experiments
• Experimental techniques for searching for FIPs at accelerator-based experiments.
• Very low-mass (< 100 eV) FIPs
• Stellar, astrophysical, and cosmological constraints on FIPs
• Heavy neutral leptons and their relationships to leptogenesis, astrophysics, cosmology, SM neutrino physics.
• Light dark matter and corresponding mediators, including axions/ALPs: phenomenology, searches at accelerator-based experiments, helioscopes, haloscopes, relationship to astrophysics and cosmology.

We look forward to welcoming you online for FIPs 2020.

Organizing committee:

Martin Bauer
James Beacham
Albert De Roeck
Gian Francesco Giudice
Pilar Hernandez
Igor Irastorza
Joerg Jaeckel
Gordan Krnjaic
Gaia Lanfranchi
Jocelyn Monroe
Silvia Pascoli
Joshua Ruderman
Philip Schuster
Mikhail Shaposhnikov
Jessie Shelton

FIPs_2020_Poster_v3.pdf

FIPS group picture.pdf

Monday, 31 August

14:00 → 14:20 Opening by the CERN Director for Research and Computing, Prof. E. Elsen

Speaker: Eckhard Elsen (CERN)

14:20 → 18:30 Introductory Talks

Conveners: James Beacham (Duke University (US)), Philip Schuster (SLAC)

14:20 SM problems and FIPs from theoretical viewpoints

Speaker: Simon Knapen (Institute for Advanced Study)

FIPS_2020_knapen.pdf

15:00 What can we learn for particle physics from DM cosmological observations?

Speaker: Alexey Boiarskyi (Leiden University (NL))

FIPs_conference__Alexey (1).pdf

15:30 Theory overview of DM models in the low (<10 GeV) mass range

Speaker: Asher Berlin (University of Chicago)

FIPS_Berlin.pdf

16:00 Status and prospects of DM direct detection experiments in the low (< 10 GeV) mass region

Speaker: Susana Cebrian (Universidad de Zaragoza)

FIPs_2020_Cebrian.pdf

16:30 Coffee break

17:00 Search for FIPs at collider based experiments (overview)

Speaker: Heather Russell (McGill University (CA))

20200831_hrussell_FIPs_v2.pdf

17:30 Search for FIPs with experiments at extracted beams (overview)

Speaker: Bertrand Echenard (California Institute of Technology)

FIP-echenard.pdf

18:00 Search for very low mass FIPs (atomic physics, quantum technology)

Speaker: Dr Yevgeny Stadnik (Kavli IPMU, University of Tokyo)

Stadnik_2020_August-CERN-FINAL.pdf

Stadnik_2020_August-CERN-FINAL.pdf

18:30 → 19:00 Discussion Session

Tuesday, 1 September

14:30 → 17:50 Feebly interacting fermion particles

Conveners: Prof. Pilar Hernandez, Silvia Pascoli (University of Durham (GB))

14:30 Theoretical introduction to seesaw models and their connection to leptogenesis

Speaker: Marco Drewes (Universite Catholique de Louvain (UCL) (BE))

FIPs 2020.pdf

15:00 HNLs and their relation to astroparticle and cosmology (3.5 keV line, BBN, measurement of the absolute neutrino masses (KATRIN, Euclid, etc.)

Speaker: Prof. Oleg Ruchayskiy (University of Copenhagen (DK))

HNLs_from_cosmology_Ruchayskiy.pdf

15:25 HNLs and their relation (or non-relation) to active neutrino physics (PMNS, δ CP , 0 νββ decay, m(lighest neutrino),..)

Speaker: Jacobo Lopez Pavon (IFIC, CSIC-Universitat de València)

JLP_FIPs2020.pdf

15:50 coffee break

16:10 Search for HNLs at extracted beams (neutrino experiments (T2K), NA62-kaon and dump mode, prospects for DUNE)

Speaker: Alexander Izmaylov (INR RAS)

FIP2020_Izmaylov_final.pdf

16:35 Search for HNLs at LHCb, ATLAS, CMS: status and prospects

Speaker: Lesya Shchutska (EPFL - Ecole Polytechnique Federale Lausanne (CH))

09-01-FIPs-HNL.pdf

17:00 Prospects Search for HNLs with SHiP, MATHUSLA, FASER, and CODEX-b

Speaker: Nicola Serra (Universitaet Zuerich (CH))

HNL_FIPs_2020.pdf

17:25 Prospects to search for HNLs at future ee/ep/pp colliders

Speaker: Oliver Fischer (Max-Planck-Institute fuer Kernphysik)

FIPs_2020_Fischer.pdf

17:50 → 18:20 Discussion Session

Wednesday, 2 September

14:30 → 17:50 Feebly interacting vector particles

Conveners: Gaia Lanfranchi (INFN e Laboratori Nazionali di Frascati (IT)), Martin Bauer (Heidelberg University)

14:30 Early cosmology (BBN, re-ionisation, 21 cm) constraints on new (feebly-interacting) physics (covering vector, scalar, pseudo-scalar portals)

Speaker: Maxim Pospelov

CERN_fip_2020.pdf

15:00 Search for LDM and Vector/ALPs mediators in the sub-GeV mass range at NA64, NA62, MESA, PADME.

Speaker: Sergei Gninenko (Russian Academy of Sciences (RU))

gninenko_fips_2020.pdf

15:30 LDM and mediator searches at B-factories (Belle-II, including BaBar ad Belle results)

Speaker: Enrico Graziani (INFN - National Institute for Nuclear Physics)

FIPs-graziani.pdf

16:00 coffee break

16:30 Search for LDM and vector mediators at LHCb, ATLAS, CMS: status and prospects

Speaker: Philip Ilten (University of Birmingham (GB))

ilten.pdf

16:55 Search for LDM and vector mediators at FASER, CODEX-b, SHiP, MATHUSLA

Speaker: Jakob Salfeld-Nebgen (CERN)

FIPs_VectorPortalsExp_jsalfeld.pdf

17:20 Search for LDM and vector mediators at accelerator-based experiments in US (HPS, BDX, Mini- Boone, LDMX,...)

Speaker: Timothy Knight Nelson (SLAC National Accelerator Laboratory (US))

FIPS2020_TKN.pdf

17:50 → 18:20 Discussion Session

Thursday, 3 September

14:30 → 17:40 Feebly interacting pseudo-scalar particles

Conveners: Joerg Jaeckel (ITP Heidelberg), Joshua Ruderman (New York University)

14:30 Status of stellar and astrophysics constraints on new (feebly-interacting) physics (covering vector, scalar, pseudo-scalar portals)

Speaker: Maurizio Giannotti (Barry University)

MG_FIP.pdf

15:00 Axions/ALPs as DM and/or light DM mediators: phenomenology

Speaker: Andreas Ringwald (Deutsches Elektronen-Synchrotron DESY)

FIPS_AR.pdf

15:30 QCD axion beyond the axion band

Speaker: Prateek Agrawal (University of Maryland)

FIPs2020-Sep20-Agrawal.pdf

15:55 coffee break

16:15 Axions/ALPs as DM and/or light DM mediators: overview of experimental approaches in the low mass range

Speaker: Igor Garcia Irastorza (Universidad de Zaragoza (ES))

AxionExperiments_Irastorza_FIPS.pdf

AxionExperiments_Irastorza_FIPS.pptx

16:45 axions/ALPs phenomenology at accelerator-based experiments

Speaker: Felix Kahlhoefer (RWTH Aachen University)

FIPs.pdf

17:15 Search for axions/ALPs at the LHC

Speaker: David d'Enterria (CERN)

dde_alps_lhc_fips_sept20.pdf

17:40 → 18:10 Discussion Session

Friday, 4 September

14:30 → 17:20 Feebly interacting scalar particles

Conveners: Albert De Roeck (CERN), Jocelyn Rebecca Monroe (University of London (GB))

14:30 Cosmology and particle phenomenology of feebly interacting scalars

Speaker: Fedor Bezrukov (University of Manchester (GB))

FIPS_scalars.pdf

15:00 Experimental constraints on the exotic Higgs width

Speaker: Maria Cepeda (CIEMAT)

ExoticWidth.pdf

15:25 Direct searches for feebly-interacting dark scalars at the central detectors of the LHC: status and prospects

Speaker: Verena Ingrid Martinez Outschoorn (Fermi National Accelerator Lab. (US))

FIPs_MartinezOutschoorn_Sep2020.pdf

15:50 coffee break

16:10 Search for light feebly-interacting scalar particles at extracted beam lines (SeaQuest @ FNAL, NA62, SHiP,....)

Speaker: Joel Christopher Swallow (University of Birmingham (GB))

FIPs20_JSwallow_ScalarsFromBeamLines_vF.pdf

16:30 Prospects to search for light feebly-interacting scalar particles at MATHUSLA, CODEX-b, FASER, ANUBIS, ....

Speaker: David Curtin (University of Toronto)

davidcurtin_scalar_FIPs_MATHUSLA_etc_CERN_FIPS_Workshop_2020.09.04_20m_v1.pdf

16:50 Scalar portal and its connection to Higgs physics from a theory viewpoint

Speaker: stefania gori (UC Santa Cruz)

TalkFIP_gori.pdf

17:20 → 17:50 Discussion

17:50 → 18:00 Closing (Proceedings, next editions of the workshop, etc.)

Speaker: Gaia Lanfranchi (INFN e Laboratori Nazionali di Frascati (IT))

Closing.pdf