Open Symposium on the European Strategy for Particle Physics

23 Jun 2025, 08:00 → 27 Jun 2025, 18:00 Europe/Rome

Palazzo del Casinò (Venice Lido)

Sandra Malvezzi (Istituto Nazionale di Fisica Nucleare)

The European Strategy for Particle Physics (ESPP) is the cornerstone of Europe’s decision-making process for the long-term future of the field. Mandated by the CERN Council, it is formed through a broad consultation of the particle physics community and the study of selected projects. The focus of the ESPP 2026 Update is to identify the next flagship project at CERN to succeed the Large Hadron Collider and its high-luminosity upgrade.

Updating the ESPP is a process that takes place every 5-7 years and requires several months of work by the scientific community. The final output of this process is a document presenting the studies carried out and the recommendations expressed. The final processing of this document is preceded by an important moment of sharing and discussion: the Open Symposium of the scientific community.

The next edition of the Open Symposium will be hosted in Italy, at Lido di Venezia, from 23—27 June 2025. It will see scientists and partners from around the world debate the inputs to the ESPP and discuss the goals to be achieved in the coming decades.

The Open Symposium of the ESSP 2026 Update is hosted and organized by the Italian National Institute for Nuclear Physics (INFN), with the support of CERN.

 

                                                               UNDER THE PATRONAGE OF:

                                                                      SPONSORED BY

 

 

 

                                                 

Sponsor _Company_profile_OCEM_PE.pdf A4 per open symposium Venezia.pdf

Monday, 23 June

Registration

Opening Session

1 Official Opening

2 Implementation of the last Strategy

Speaker: Fabiola Gianotti (CERN) (CERN)

3 Outstanding questions in particle physics

Speaker: Eric Laenen (Nikhef) (Nikhef/UvAe)

10:45 Coffee-Break

Parallel 1 - Electroweak Physics

Conveners: Jorge de Blas (University of Granada) (University of Granada), Monica Dunford (Heidelberg University) (Heidelberg University)

4 Overall assessment of projects (including HL-LHC inputs):

Speaker: Angela Taliercio

5 Higgs and Top inputs

Speaker: Christian Grefe (University of Bonn) (University of Bonn)

6 EW inputs

Speaker: Michele Selvaggi (CERN) (CERN)

Parallel 2 - Accelerator Technologies

Conveners: Anke-Susanne Mueller (KIT), Roberto Losito (CERN)

7 Lessons from current ete- colliders (i.e. SuperKEKb, DAFNE...)

Speaker: Yukiyoshi Onishi (KEK) (KEK)

8 Lessons from linear collider test facilities

Speaker: Angeles Faus-Golde (IJCLab)

9 Environmental impact considerations for Accelerator Facilities

Speaker: Titov Maksym (CEA-Saclay) (CEA Saclay)

10 Normal Conducting RF and F powering

Speaker: Walter Wuensch (CERN) (CERN)

Parallel 3 - Neutrinos and Cosmic Messengers

Conveners: Pilar Hernandez (University of Valencia) (University of Valencia), Sara Bolognesi (CEA Saclay) (CEA Saclay)

11 Neutrino oscillations: neutrino masses, mixings and CP symmetry

Speaker: Dr Mark Scott (Imperial College London) (Imperial College London)

12 Discussion

Speaker: Stephen Dolan (CERN) - discussion leader (CERN)

13 Neutrino cross-sections

Speaker: Ivan Esteban (University of the Basque Country)

14 Discussion

Speaker: Concepcion Gonzalez-Garcia (ICREA-U Barcelona /YITP-StonyBrook) - discussion leader (ICREA-U Barcelona and YITP-StonyBrook)

15 Neutrino mass scale and Nature

Speaker: Joe Formaggio

16 Discussion

Speaker: Aldo Ianni (INFN) - discussion leader (Istituto Nazionale di Fisica Nucleare)

Parallel 4 - Strong Interactions

Conveners: Andrea Dainese (INFN-Padua) (Istituto Nazionale di Fisica Nucleare), Cristinel Diaconu (CCPM Marseille) (Aix-Marseille Université et CNRS/IN2P3)

17 Introduction: Strong Interactions WG and ESPP inputs

Speaker: Chiara Signorile-Signorile (Max Planck Institute for Physics) (KIT (Karlsruhe))

18 Precision QCD: state-of-the-art and prospects with future facilities

Speaker: David d'Enterria (CERN) (CERN)

19 QCD input to cosmic rays and compact stellar objects: open questions and next challenges

Speaker: Valentina Mantovani Sarti (TUM)

20 Prospects for exotic hadron physics

Speakers: Antoine Gerardin (AIX-Marseille University), Marco Pappagallo (INFN) (INFN & University of Bari)

Parallel 5 – Flavor

Conveners: Gino Isidori (University of Zurich), Marie-Helene Schune (IJCLab Paris) (IJCLab CNRS/Université Paris-Saclay (FR))

21 Theoretical landscape

Speaker: Gino Isidori (University of Zurich) (University of Zurich)

22 Experimental landscape

Speaker: Marie-Helene Schune (IJCLab CNRS/Université Paris-Saclay) (IJCLab CNRS/Université Paris-Saclay (FR))

23 Future prospects from Lattice QCD

Speaker: A. Juttner

24 Rare decays of b and c quarks

Speaker: Marta Calvi (INFN-Milano Bicocca) (Istituto Nazionale di Fisica Nucleare)

25 Tau physics

Speaker: Justine Serrano (IN2P3) (LAL)

13:00 Lunch Break

Parallel 1 - Electroweak Physics (part II)

Conveners: Jorge de Blas (University of Granada) (University of Granada), Monica Dunford (Heidelberg University) (Heidelberg University)

26 Theory scenarios

Speakers: Ayres Freitas (University of Pittsburgh) (University of Pittsburgh), Emanuele Angelo Bagnaschi (INFN) (INFN LNF), Pier Paolo Giardino (INFN) (INFN Roma 3)

27 Technical details of the fits and comparisons

Speaker: Jorge de Blas (University of Granada) (University of Granada)

Parallel 2 - Accelerator Technologies (part II)

Conveners: Anke-Susanne Mueller (KIT), Roberto Losito (CERN)

28 Superconducting RF

Speaker: Peter Mcintosh (STFC) (STFC)

29 High-Field magnets

Speaker: Bernhard Auchmann (PSI) (PSI/CERN)

30 High gradient wakefield accelerators (i.e. laser- and beam-driven)

Speaker: Marlene Turner (CERN) (CERN)

Parallel 3 - Neutrinos and Cosmic Messengers (part II)

Conveners: Pilar Hernandez (University of Valencia) (University of Valencia), Sara Bolognesi (CEA Saclay) (CEA Saclay)

31 BSM searches in neutrino experiments

Speaker: Joachim Kopp (CERN and JGU Mainz) (CERN and JGU Mainz)

32 Discussion

Speaker: Concepcion Gonzalez-Garcia (ICREA-U Barcelona /YITP-StonyBrook) - discussion leader (ICREA-U Barcelona and YITP-StonyBrook)

33 Comic messengers

Speaker: Aart Heijboer

34 DIscussion

Speaker: Elisa Resconi

Parallel 4- Strong Interactions (part II)

Conveners: Andrea Dainese (INFN-Padua) (Istituto Nazionale di Fisica Nucleare), Cristinel Diaconu (CCPM Marseille) (Aix-Marseille Université et CNRS/IN2P3)

35 Partonic dynamics in protons and nuclei: prospects with future measurements at HL-LHC and electron-hadron colliders

Speaker: Néstor Armesto (IGFAE-Compostela Univ.) (Universidade de Santiago de Compostela)

36 Hot and dense QCD: future prospects in heavy-ion collisions

Speaker: Urs Wiedemann Wiedemann (CERN) (CERN PH TH)

Parallel 5 – Flavor (part II)

Conveners: Gino Isidori (University of Zurich), Marie-Helene Schune (IJCLab Paris) (IJCLab CNRS/Université Paris-Saclay (FR))

37 CPV & CKM elements from heavy quark decays

Speaker: T. Humair

38 Flavour physics with W & Z

Speaker: Patrick Koppenburg (Nikhef) (Nikhef)

39 SM tests with Kaons & pions

Speaker: Radoslav Marchevski (EPFL)

40 EMDs and LFV in light families

Speaker: Guillaume Pignol (LPSC - IN2P3) (Université Grenoble Alpes)

15:30 Short Break to allow for change rooms

Parallel 6 -Detector Technologies

Conveners: Thomas Bergauer (HEPHY Vienna) (HEPHY Vienna), Ulrich Husemann - KIT Karlsruhe (Karlsruhe Institute of Technology)

15:40 Technologies for Accelerator-based experiments

41 Detector concepts of future HET factories

Speaker: Fabrizio Palla (INFN-Pisa) (Istituto Nazionale di Fisica Nucleare)

42 Semiconductor Technologies for Vertex Detector, Silicon Tracker and Timing

Speaker: Daniela Bortoletto (University of Oxford) (University of Oxford)

43 Gas Detectors as Main Tracker and Muons Chambers

Speaker: Shikma Bressler (CERN) (CERN)

44 Calorimeters + RICH Technologies for HEP experiments

Speaker: Gabriella Gaudio (INFN-Pavia) (Istituto Nazionale di Fisica Nucleare)

Parallel 7 – BSM

Conveners: Fabio Maltoni (Louvain, Bologna) (Istituto Nazionale di Fisica Nucleare), Rebeca Gonzalez Suarez (Uppsala University) (Uppsala University (SE))

45 New gauge forces (Z’, W’... )

Speakers: Aurelio Juste (ICREA/IFAE (Barcelona)), Roberto Franceschini (INFN) (Rome 3 University)

46 Compositeness (indirectly from EFT fits)

Speakers: Loukas Gouskos, Roberto Franceschini (Rome 3 University)

47 Extension of the minimal real scalar sector giving 1st order EW phase transition and possibly stability

Speaker: Nathaniel Craig (UC Santa Barbara) (UC Santa Barbara)

48 Flavor (together with flavor group)

Speakers: Lesya Shchutska (EPFL) (EPFL), Sophie Renner (CERN)

Parallel 8 - Dark matter/Dark Sector

Conveners: Emanuele Castorina (University of Milano) - Chairperson, Jocelyn Monroe (University of Oxford) (University of Oxford), Matthew McCullough (CERN) (CERN)

49 Overview and Methodology of Working Group

Speaker: Yohei Ema (CERN)

50 Ultralight Dark Matter and Dark Sectors

Speaker: Julia Vogel (Dortmund)

16:30 Light Dark Matter and Dark Sectors

51 Accelerator-based probes

Speaker: Maksym Ovchynnikov (CERN)

Parallel 9 -Computing

Conveners: Borut Kersevan (JSI - Ljubljana University), Tommaso Boccali (INFN-Pisa) (Istituto Nazionale di Fisica Nucleare)

15:40 AI

52 Summary from WG AI

Speaker: Gregor Kasieczka (Hamburg University) (Universität Hamburg)

53 AI for fast inference in real-time systems: status and future perspectives

Speaker: Thea Aarrestad (ETH Zurich) (ETH Zurich)

16:00 Facilities

54 Summary from WG Facilities

Speaker: Maria Girone (CERN) (CERN)

55 HPC Integration in HEP

Speaker: Andrej Filipcic (JSI)

56 Sustainable Computing Facilities through Industry Collaboration

Speaker: Estela Suarez (SiPearl)

16:30 Software

57 Summary from WG Software

Speaker: Nicole Skidmore (University of Warwick) (University of Warwick)

58 HEP software: past, status and prospects

Speaker: Eduardo Rodrigues (University of Liverpool) (University of Liverpool)

59 Key4HEP and Future collider software

Speaker: Leonhard Reichenbach (CERN / University of Bonn) (CERN / University of Bonn)

17:00 Coffee-Break

Parallel 6 -Detector Technologies

Conveners: Thomas Bergauer (HEPHY Vienna) (HEPHY Vienna), Ulrich Husemann - KIT Karlsruhe (Karlsruhe Institute of Technology)

17:20 Beyond accelerators and emerging technologies

60 Technologies for Neutrino and Dark Matter Experiments

Speaker: Inés Gil-Botella (CIEMAT) (CIEMAT)

61 Quantum and emerging technologies

Speaker: Michael Doser (CERN) (CERN)

18:05 Electronics, TDAQ and the ecosystem for instrumentation

62 ASICs: Lesson Learnt & Perspectives

Speaker: Frank Simon (Karlsruhe Institute of Technology)

63 TDAQ Perspectives: triggerless DAQ, intelligence on frontend, AI trigger

Speaker: Thea Aarrestad (ETH Zurich) (ETH Zurich)

64 Optimizing the environment for detector R&D: industry involvement, person-power and resources

Speaker: Marcel Demarteau (Oak Ridge National Laboratory)

Parallel 7 – BSM

Conveners: Fabio Maltoni (Louvain, Bologna) (Istituto Nazionale di Fisica Nucleare), Rebeca Gonzalez Suarez (Uppsala University) (Uppsala University (SE))

65 Symmetries as a solution of the Higgs naturalness problem; SUSY and other models (such as neutral naturalness)

Speakers: Aurelio Juste (ICREA/IFAE) (ICREA/IFAE (Barcelona)), Tim Cohen (CERN) (CERN)

66 Minimal dark matter (WIMP)

Speakers: Annapaola de Cosa (ETHZ) (ETHZ), Tim Cohen (CERN) (CERN)

67 buffer: dark photon

Speakers: Annapaola de Cosa (ETHZ) (ETHZ), Lesya Shchutska (EPFL) (EPFL), Tim Cohen (CERN) (CERN)

68 buffer: dark higgs

Speakers: Annapaola de Cosa (ETHZ) (ETHZ), Lesya Shchutska (EPFL) (EPFL), Nathaniel Craig (UC Santa Barbara) (UC Santa Barbara)

69 buffer: HNLs

Speakers: Annapaola de Cosa (ETHZ) (ETHZ), Lesya Shchutska (EPFL) (EPFL), Roberto Franceschini (INFN) (Rome 3 University)

70 buffer: ALPs

Speakers: Annapaola de Cosa (ETHZ) (ETHZ), Lesya Shchutska (EPFL) (EPFL), Sophie Renner (CERN)

71 Discussion on Portals

Parallel 8 - Dark matter/Dark Sector

Conveners: Emanuele Castorina (University of Milano) - Chairperson, Jocelyn Monroe (University of Oxford) (University of Oxford), Matthew McCullough (CERN) (CERN)

17:20 Light Dark Matter and Dark Sectors

72 Direct detection landscape

Speaker: Paolo Agnes (GSSI) (GSSI)

73 Cosmological aspects

Speaker: Josef Pradler (University of Vienna)

18:10 Heavy Dark Matter and Dark Sector

74 Direct and Indirect Detection

Speaker: Tina Pollman (Nikhef)

75 Collider and Interplay with major future facilities

Speaker: Monica D'Onofrio (Liverpool University) (University of Liverpool)

Parallel 9 -Computing

Conveners: Borut Kersevan (JSI - Ljubljana University), Tommaso Boccali (INFN-Pisa) (Istituto Nazionale di Fisica Nucleare)

17:20 Modelling

76 Summary from WG Modelling

Speaker: David Lange (Princeton University) (Princeton University)

77 Estimating FCC computational needs from near term through the 2040s

Speaker: Gerardo Ganis (CERN) (CERN)

78 Including energy awareness in computational needs of future experiments

Speaker: Caterina Doglioni (University of Manchester) (University of Manchester)

17:50 New Techs

79 Summary from WG New Technologies

Speaker: Sofia Vallecorsa (CERN) (CERN)

80 Quantum Inspired ML on FPGA

Speaker: Marco Zanetti (INFN-Padua) (Istituto Nazionale di Fisica Nucleare)

81 Hybrid algorithms

Speaker: Ameer Azzam (Qilimanjaro)

82 Discussion

20:00 Welcome Cocktail

Tuesday, 24 June

Large-scale accelerator projects at CERN, part I

83 FCC-ee (incl. common infrastructure)

Speaker: Michael Benedikt (CERN) (CERN)

84 FCC-hh

Speaker: Frank Zimmermann (CERN) (CERN)

85 A Linear Collider at CERN (ILC, CLIC)

Speaker: Steinar Stapnes (CERN) (CERN)

10:50 Coffee-Break

Large-scale accelerator projects at CERN, part II

86 LEP3

Speaker: Tejinder Virdee (Imperial College London)

87 LHeC

Speaker: Jorgen D'Hondt (Nikhef) (Nikhef)

88 Muon Collider

Speaker: Daniel Schulte (CERN)

89 Linear Collider Vision (C3, HALHF, wake-field acceleration)

Speaker: Jenny List DESY)

13:00 Lunch Break

Status in China, Japan, US

90 Status and plans for the realisation of the Circular Electron Positron Collider (CEPC) and other large-scale projects in China

Speaker: Yifang Wang (IHEP)

91 Status and plans for the realisation of the International Linear Collider (ILC) and other large-scale projects in Japan

Speaker: Shoji Asai (KEK) (U-Tokyo)

92 Large-scale particle physics projects in the US and plans for participation in projects outside

Speaker: Hitoshi Murayama (Berkeley) (UC Berkeley, LBNL, Kavli IPMU Tokyo)

16:15 Coffee-Break

Accelerator Technologies

Status of critical item, R&D needs timeline, required resources

Convener: Tor Raubenheimer (SLAC)

93 Conceptual challenges of collider proposals

Speaker: Gianluigi Arduini (CERN) (CERN)

94 The technology challenges

Speaker: Philip Burrows (Oxford University) (John Adams Institute, Oxford University)

95 Non-collider high intensity concepts

Speaker: Chris Rogers (STFC, UK) (RAL)

96 Discussion

Tor Raubenheimer (discussion leader)

Speaker: Tor Raubenheimer (SLAC) - discussion leader (SLAC)

Wednesday, 25 June

Electroweak Physics

Talks (i), (ii) Discussion

97 The Electroweak/Higgs physics landscape beyond the LHC: Open questions and exploration at future colliders

Speaker: Monica Dunford (University of Heidelberg) (Heidelberg University)

98 Characterisation of the Electroweak/Higgs sectors at future colliders: Comparative assessment

Speaker: Jorge de Blas (University of Granada) (University of Granada)

99 Discussion

Florencia Canelli (discussion leader)

Speaker: Florencia Canelli (University of Zurich) - discussion leader (University of Zurich)

10:45 Coffee-Break

Strong Interactions

Talks (i), (ii) Discussion

100 Open questions and experimental prospects: precision QCD & internal structure of protons and nuclei

Speaker: Cristinel Diaconu (CPPM) (Aix-Marseille Université et CNRS/IN2P3)

101 Open questions and experimental prospects: hot and dense QCD & QCD connections to hadronic, nuclear and astrophysics

Speaker: Andrea Dainese (INFN-Padua) (Istituto Nazionale di Fisica Nucleare)

102 Discussion

Sven-Olaf Moch (discussion leader)

Speaker: Sven-Olaf Moch (University of Hamburg) - discussion leader (Universität Hamburg)

13:00 Lunch Break

Flavour physics

Talks (i), (ii) Discussion

103 Status and open questions in flavour physics

Speaker: Gino Isidori (University of Zurich)

104 Experimental programs to address open issues in flavour physics

Speaker: Marie-Helene Schune (IJCLab Paris) (IJCLab CNRS/Université Paris-Saclay (FR))

105 Discussion

Tim Gershon (discussion leader)

Speaker: Tim Gershon (University of Warwick) - discussion leader (University of Warwick)

16:15 Coffee-Break

Neutrinos and Cosmic Messengers

Talks (i), (ii) Discussion

106 Open questions in neutrino physics and related BSM

Speaker: Pilar Hernández (University of Valencia) (University of Valencia)

107 Measurements of neutrino properties in the SM and beyond

Speaker: Sara Bolognesi (CEA Saclay) (CEA Saclay)

108 Cosmic Messengers for particle physics

Speaker: Valerie Domcke (CERN)

109 Discussion

Speaker: Mauro Mezzetto (INFN) - discussion leader (INFN-PD)

20:00 Social Dinner

Thursday, 26 June

BSM physics

Talks (i), (ii) Discussion

110 Status and open questions in the search for Physics Beyond the Standard Model

Speaker: Fabio Maltoni (Louvain, Bologna) (Università di Bologna)

111 Experimental programs to address open issues in BSM physics

Speaker: Rebeca Gonzalez Suarez (Uppsala University) (Uppsala University (SE))

112 Discussion

Maurizio Pierini (discussion leader)

Speaker: Maurizio Pierini (CERN) - discussion leader (CERN)

10:45 Coffee-Break

Dark Matter / dark sector

Talks (i), (ii) Discussion

113 Status and open questions in dark matter and dark sector physics

Speaker: Matthew McCullough (CERN) (CERN)

114 Experimental programs to address open issues in dark matter and dark sector physics

Speaker: Jocelyn Monroe (University of Oxford) (University of Oxford)

115 Discussion

Caterina Doglinoni (discussion leader)

Speaker: Caterina Doglioni (University of Manchester) - discussion leader (University of Manchester)

13:00 Lunch Beak

Detector Technologies

status of DRDs, R&D needs, timeline, required resources

116 Tools for Discovery – Instrumentation Requirements for Future Projects

Speaker: Ulrich Husemann - KIT Karlsruhe (Karlsruhe Institute of Technology)

117 From ECFA Detector Roadmap to DRD Collaborations and beyond

Speaker: Thomas Bergauer (HEPHY Vienna) (HEPHY Vienna)

118 Discussion

Daniela Bortoletto (discussion leader)

Speaker: Daniela Bortoletto (University of Oxford) -discussion leader (University Of Oxford)

16:15 Coffee-Break

Computing

Status of critical item, R&D needs timeline, required resources

Convener: Stephane Jezequel (LAPP Annecy)

119 Computing in HEP: how we got here and needs for the next decade

Speaker: Tommaso Boccali (INFN-Pisa) (Istituto Nazionale di Fisica Nucleare)

120 HEP Computing needs and ideas for the next generation initiatives

Speaker: Borut Kersevan (JSI Ljubljana) (JSI Ljubljana)

121 Discussion

Speaker: Stephane Jezequel (LAPP Annecy) - discussion leader (LAPP Annecy)

Friday, 27 June

Overarching topics (by ESG working groups)

(by ESG Working groups)
e.g. National input and others

122 National Inputs

Speaker: Calin Alexa (Bukarest)

123 Role of national labs, strategy implementation

Speaker: Achille Stocchi (IJCLab)

124 Relations with other fields of physics

Speaker: Marek Karliner (Tel Aviv)

125 Communication, outreach, career aspects

Speaker: Pierre Van Mechelen (Universiteit Antwerpen) (Universiteit Antwerpen)

126 ECR perspectives

Speakers: Christina Dimitriadi (KTH), Ulrich Einhaus (KIT Karlsruhe)

11:15 Coffee-Break

Overarching topics (cont.)

(by ESG Working groups)

127 Sustainability

Speaker: Tadeusz Lesiak (Krakow)

128 Knowledge and technology transfer

Speaker: t.b.d.

129 Project comparison (first attempt)

Speaker: Gianluigi Arduini (CERN) (CERN)

Key messages from the symposium

Closeout talk, final discussion

Convener: Karl Jakobs (University of Freiburg) (Universitaet Freiburg (DE))