Jornadas de la Red Española de Futuros Colisionadores

19 Oct 2026, 13:00 → 21 Oct 2026, 14:00 Europe/Madrid

Delegacion del CSIC

Plaza de la Virgen, Valencia

Marcel Vos (IFIC Valencia), MaryCruz Fouz (CIEMAT)

Description

Annual meeting of the Spanish network for future colliders.

We aim to discuss Spanish contributions to theory developments, analysis and accelerator and detector technology for experiments at the FCCee and other future colliders.

For in-person participation we'll charge a fee of 75 euros, that covers coffee breaks and a dinner on Tuesday evening. The bank details for transfers will be provided shortly. If you need an invoice, please provide your institute's fiscal data (name, address, CIF) during registration.

Online participation through the zoom link that follows is possible without payment, but please register in INDICO if you wish to join the meeting online. The ZOOM link will be provided to registered participants.

Registration

Registration form

Participants

Adrian Irles
Alberto Valero
Alicia Calderon
Ana Arranz
Antonio Fernández Prieto
Arantxa Ruiz Martinez
Benito Gimeno Martinez
Brieuc Francois
Carla Martins Jardim
Celso Martinez Rivero
Concepcion Oliver Amorós
Daniel Esperante Pereirra
David Gascon
David Hernández Navalón
Edu Marin Lacoma
Eduardo Picatoste Olloqui
Fabrizio Palla
Fernando Arteche
Fernando Carrio
Fernando Carrió Argos
Fernando Cornet-Gomez
Ferran Ortiz Terol
Francis Perez
FRANCISCO matorras
Gemma Rius
Germán Rodrigo
giulio pellegrini
Guillermo García Mir
Ibon Bustinduy
Isabel Josa
Ivan Vila Alvarez
Iván Burriel Madrona
Javier Cuevas
Javier Fernandez-Tejero
Joan Marc Rafí
Jordi Duarte-Campderros
Jose Enrique Palencia Cortezon
Jose Miguel No
Juan Alcaraz Maestre
Juan Carlos Fernandez Ortega
Juan Fuster
Juan Luis Muñoz
Juan Ramírez Alfaro
Katinka Wandall-Christensen
Laura Karina Pedraza Motavita
Luca Mantani
Luca Scodellaro
Marcel Vos
Maria Jose Costa
Maria Moreno Llácer
Marta Lanzac Berrocal
MaryCruz Fouz
Melissa Almanza Soto
Miguel Ullan
Morvan Vincent
Nuria Fuster
Néstor Armesto
Olmo Arquero Peinazo
Pablo Fernandez Martinez
Pietro Vischia
Salvador Hidalgo
Santiago Folgueras
Sebastian Grinstein
Sergio Sanchez Cruz
Sven Heinemeyer
Vasiliki Mitsou
Ximo Poveda

Monday, 19 October
- 15:00 → 17:20
  Introduction and discussion
  - 15:00
    
    Introduction 20m
    
    Speaker: MaryCruz Fouz (CIEMAT)
  - 15:30
    
    FCCee progress and Spanish contributions 20m
    
    Speaker: Juan Alcaraz Maestre (CIEMAT)
  - 16:00
    
    The short straight section 20m
    
    Speaker: Antonio Fernández Prieto (Universidade de Santiago de Compostela)
  - 16:30
    
    The Spanish science industry and FCCee 20m
    
    Speaker: Erik Fernández (Ineustar)
  - 17:00
    
    Message from CPAN and the "gestor" 20m
    
    Speakers: Jose Santiago (Universidad de Granada), Maria Jose Costa (IFIC (CSIC-UV))
Tuesday, 20 October
- 09:00 → 12:00
  Detector R&D
  - 09:00
    
    Introduction 10m
    
    Speakers: Arantxa Ruiz Martinez (IFIC, CSIC-UV), Prof. Ivan Vila Alvarez (Instituto de Física de Cantabria (CSIC-UC))
  - 09:10
    
    Overview of detector R&D in Spain 30m
    
    Speaker: Santiago Folgueras (Universidad de Oviedo)
  - 09:40
    
    CERN beam test for the ALLEGRO TileCal-like hadronic calorimeter 20m
    
    Speaker: Iván Burriel Madrona (IFIC, CSIC-UV)
  - 10:00
    
    Studies on SDHCAL test beam data 20m
    
    Speaker: Olmo Arquero Peinazo (CIEMAT)
  - 10:20
    
    Towards All-Silicon Detector Ladders with Integrated Microchannel Cooling for Future Collider Experiments 20m
    
    Speaker: Javier Fernandez-Tejero (Institut de Microelectrònica de Barcelona (IMB-CNM, CSIC))
  - 10:40
    
    R&D activities on compact-silicon calorimeters: detectors for SF-QED at LUXE and Luminometers for FCCee 20m
    
    Speaker: Melissa Almanza Soto (IFIC)
  - 11:00
    
    Scalable data acquisition system for the ALLEGRO high-granularity hadronic calorimeter 20m
    
    Speaker: David Hernandez Navalon (IFIC (CSIC-UV))
  - 11:20
    
    FORGE: Framework for Orchestrated RTL Generation and Evaluation 20m
    
    Speaker: Santiago Folgueras (Universidad de Oviedo)
  - 11:40
    
    IMB-CNM sensor developments for FCC-ee 20m
    
    Speaker: Pablo Fernández Martínez (IMB-CNM, CSIC)
- 12:20 → 14:30
  Theory and analysis
  - 12:20
    
    Overview of FCCee physics studies 30m
    
    Speaker: Michele Selvaggi (CERN)
  - 12:50
    
    Electroweak precision beyond leading logarithms in the SMEFT 20m
    
    Future electron–positron colliders will probe heavy new physics through precise electroweak measurements. I will present next-to-leading-logarithmic (NLL) predictions for electroweak precision observables in the Standard Model Effective Field Theory, combining one-loop electroweak matching with two-loop renormalization-group evolution. I will focus on interactions involving top quarks, whose effects on electroweak observables in some cases first appear at two loops. I will show how NLL contributions change the resulting constraints and introduce sensitivity to operators absent at leading-logarithmic order. Comparing current bounds with FCC-ee projections, I will also discuss the complementarity between electroweak precision measurements and top-quark production at the LHC.
    
    Speaker: Benjamin Stefanek (IFIC)
  - 13:10
    
    Experimental prospects for quantum decoherence measurements at colliders 20m
    
    Quantum entanglement is one of the defining features of quantum mechanics. In high-energy
    colliders, quantum properties are experimentally accessible, the most important example being top
    quark pair production at the LHC. This channel lead to the discovery of spin entanglement in 2024
    [1-2].
    In this work [3], we study how energetic final-state radiation modifies the spin entanglement of fermion–antifermion pairs, and demonstrate that it can lead to measurable decoherence. The study is performed at parton level using simulations computed with MadGraph5_aMC@NLO, using t tbar g
    and tau+ tau- gamma production processes. The spin density matrix is reconstructed as a function of the
    FSR energy.
    We conclude that a statistically significant observation of decoherence can be obtained with current
    data in associated pp -> t tbar g production at the LHC and in e+e- -> tau+ tau- gamma production at Belle II. Future electron-positron colliders operating well above the t tbar g production threshold or at the Z pole, respectively, could further enable differential measurements of quantum entanglement as a function of the FSR energy.
    [1] ATLAS Collaboration. Nature 633, 542 (2024).
    [2] CMS Collaboration. PRD 110, 112016 (2024).
    [3] Aoude et. al. arXiv:2604.16268v3. Submitted to PRL.
    
    Speaker: Guillermo García Mir (Univ. of Valencia and CSIC (ES))
  - 13:30
    
    Top-quark pair production sensitivity to heavy new physics at the FCC-ee 20m
    
    We study the sensitivity of top-quark pair production at the FCC-ee to heavy new physics, parametrised
    in the Standard Model effective field theory, using discriminants based on matrix elements. The
    analysis includes detector reconstruction effects, obtained with a fast simulation of the IDEA detector
    concept, and jet flavour tagging. We consider dimension-six operators that modify the electroweak
    couplings of the top quark or generate four-fermion interactions, at leading order and
    in diagrams with two resonant top quarks. The full six-body kinematic information is employed
    to maximise the discrimination power against the Standard Model. Two bins per dimension in
    the space of 12 discriminants, one per operator considered, provide a simple and robust methodology
    to set nearly optimal multidimensional constraints. Bounds on the new physics scale can
    reach values up to 30 TeV in a single-operator fit and up to 5 TeV in a global multi-operator fit. A
    combination with High-Luminosity LHC prospects on top-quark operators shows complementary
    sensitivities which help lift approximate degeneracies.
    
    Speaker: Sergio Sanchez Cruz (Universidad de Oviedo)
  - 13:50
    
    The bottom quark mass at high scale 20m
    
    Measurements at electron-positron colliders can probe the scale evolution of quark masses predicted
    by the Standard Model in several ways. LEP and SLD extracted mb(mZ) from three jet
    rates in Z -> b bbar
    decay. A future Z-pole run can improve the precision considerably, while a measurement
    of mb at higher scale is possible from e+e- -> b bbar
    production at 250 GeV and above. A
    very precise determination of mb(mH), with an uncertainty of 10s of MeV, can be achieved from
    measurements of Higgs decay rates in the Higgs factory runs at
    sqrt(s) = 250 GeV and 550 GeV.
    In this contribution, we present the state-of-the-art extraction of mb(mH) at the LHC, which is
    measured by the ATLAS experiment to be 2.73+0.27
    -0.25 GeV, and provide updated projections for the
    HL-LHC and future colliders. We also present a proposal for an alternative methodology, where
    mb(mH) and the bottom-quark Yukawa coupling are extracted simultaneously to provide a more
    model-independent result, as well as projections for the sensitivity of such extraction in a future
    electron-positron collider.
    
    Speaker: Juan Ramirez Alfaro (IFIC, CSIC-UV)
  - 14:10
    
    New Physics Reach through Precision at Future Colliders 20m
    
    I will present projections for the sensitivity of near-term electron-positron colliders, FCC-ee, LEP3,
    and the Linear Collider Facility, to new physics through precision measurements of Standard
    Model interactions. These projections are interpreted within three complementary frameworks of
    increasing generality: Higgs coupling modifiers, effective Higgs and electroweak couplings, and
    global SMEFT fits incorporating renormalisation-group evolution, linear and quadratic EFT contributions,
    and NLO corrections where available. Matching the EFT description to UV-complete
    models, I will show how these results translate into projected sensitivities to representative newphysics
    scenarios, including composite Higgs models and single-particle extensions of the SM. The
    talk will also introduce the accompanying public release of an updated SMEFiT framework, allowing
    the community to reproduce, extend, and adapt these results.
    
    Speaker: Luca Mantani
- 15:30 → 18:40
  Accelerator technology
  - 15:30
    
    Machine Detector Interface (MDI) current status for FCC-ee 25m
    
    Speaker: Prof. Fabrizio Palla (INFN Pisa)
  - 15:55
    
    The PERLE project, a high current ERL 25m
    
    Speaker: Prof. Achille Stocchi (IJCLab / Université Paris-Saclay, IN2P3/CNRS)
  - 16:20
    
    SAAC: A High Field Superconducting Magnet Demostrator for Particle Accelerators 20m
    
    Speaker: Dr. Carla Martins (CIEMAT)
  - 16:40
    
    .Development and characterization of a high-resolution re-entrant cBPM system at the ATF Linac 20m
    
    Speaker: Laura Pedraza Motavita
  - 17:00
    
    ESS-Bilbao contributions to PERLE project 20m
    
    Speaker: Dr. Juan Luis Muñoz (ESS-Bilbao)
  - 17:20
    
    The ALBA II project 20m
    
    Speaker: Francis Perez (Sincrotron ALBA - CELLS)
  - 17:40
    
    ESS-Bilbao HiCANS platform overview 20m
    
    Speaker: Ibon Bustinduy (ESS-Bilbao)
  - 18:00
    
    Simulations for LIPAc: Benchmarking RF-Track and TraceWin in the Context of Fusion Material Validation 20m
    
    Speaker: Edu Marin Lacoma (Polytechnics University of Catalonia)
  - 18:20
    
    The IFMIF-DONES project 20m
    
    Speaker: Dr. Jorge Maestre (IFMIF-DONES)
Wednesday, 21 October
- 09:30 → 12:30
  Detector concepts
  - 09:30
    
    Introduction 10m
    
    Speakers: Adrian Irles (IFIC, CSIC-UV), MaryCruz Fouz (CIEMAT), Ximo Poveda (IFIC, CSIC-UV)
  - 09:40
    
    FCC software overview and opportunities to contribute 30m
    
    Speaker: Brieuc François (CERN)
  - 10:20
    
    Towards ILD geometry and reconstruction adaptation for FCC-ee Tera-Z 20m
    
    Speaker: Adrian Irles (IFIC, CSIC-UV)
  - 10:50
    
    Z→τ⁺τ⁻ reconstruction and preliminary tau polarization studies at FCC-ee: ILD vs CLD 20m
    
    Speaker: Olmo Arquero Peinazo (CIEMAT)
  - 11:20
    
    Machine Learned Particle Flow developments for ALLEGRO 20m
    
    Speaker: Ana Arranz Asensi
- 12:00 → 13:00
  
  Closing session

Jornadas de la Red Española de Futuros Colisionadores

Delegacion del CSIC

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