Current position

Associate Professor (Public Servant) of Atomic, Molecular and Nuclear Physics.
Department of Interdisciplinary Physics. Universidad Nacional de Educación a Distancia (UNED).
Avda. Esparta 9, Las Rozas de Madrid, E-28232, Spain.

• Full member of the Joint Physics Analysis Center (JPAC).
• Full member of the Exotic Hadrons (ExoHad) Topical Collaboration.
• Member of the Electron-Ion Collider User Group (EICUG) and institutional representative of UNED.
• Member of the Physics Innovation Teaching Group (GIDF) at UNED (GID2016-25).
• Department representative at the Master in Advanced Physics Committee.
• Department representative at the Degree in Physics Committee.

Research interest

My work is focused on understanding the strong interaction and color confinement in the energy regime where the gluons and quarks are bound into hadrons. Most of my work is on amplitude analysis for hadron spectroscopy, specially on exotic states. I use state-of-the-art theory and analysis techniques to extract dynamical information from experimental data. In this way I can get a better understanding of the strong interaction dynamics that leads to hadron formation. In doing so, I use S-matrix theory, effective field theories, chiral perturbation theory, Regge physics, lattice field theory, machine learning and artificial intelligence. My full list of publications can be found in the Scientific databases section below.

Education

• 2006 PhD in Physics. Universidad Complutense de Madrid (UCM), Madrid, Spain. 
  Title: Electromagnetic Production of Light Mesons. Supervisors: J. M. Udías and E. Moya de Guerra. 
  Grade: "Sobresaliente Cum Laude'' (Maximum qualification with Honors) with "Doctor Europeus'' Mention.
• 2003 Diploma de Estudios Avanzados in Atomic and Nuclear Physics and Renewable Power. UCM Madrid, Spain.
• 2001 Licentiate in Physics (Fundamental Physics). UCM, Madrid, Spain.

Scientific databases

• ORCID: 0000-0001-8979-5660
• Google Scholar: AsSoUjEAAAAJ
• InSPIRE-HEP: C.Fernandez.Ramirez.1
• SCOPUS: 13002934000
• UNED Research portal

Current teaching

Master in Advanced Physics:

• Complements of Mathematical Methods. First year, first semester.

Degree in Physics:

• Experimental Techniques IV. Fourth year, second semester.
• Fundamentals of Physics III. Second year, first semester.
• Mathematical Methods II (coordinator). Second year, first semester.
• Mathematical Methods III (coordinator). Second year, second semester.
• Nuclear and Particle Physics. Fourth year, first semester.

Degree in Chemistry:

• Numerical Calculus and Applied Statistics. Second year, first semester.

Mentoring

PhD:

• 2025 J. A. Silva Castro. PhD Thesis Supervised within the PhD in Science (Physics) at Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico. Title: Amplitude Analysis for Hadron Physics.

MSc:

• 2025 A. A. Souissi. Master Thesis Supervised within the Master in Advanced Physics at UNED. Title: Estudio de la naturaleza de las resonancias hadrónicas usndo redes neuronales.
• 2025 J. Cheng. Master Thesis Supervised within the Master in Advanced Physics at UNED. Title: Modelos de IA generativa aplicados a la generación de muestras sintéticas de piones.
• 2019 J. A. Silva Castro. Master Thesis Supervised within the Master in Science (Physics) at UNAM. Title: Regge phenomenology of N* and Delta* poles. "Alfonso Caso'' Medal to best Master Thesis in Science (Physics) of the 2019 generation.
• 2012 R. Moreno Ortega. Master Thesis Supervised within the Inter-University Master in Nuclear Physics at UCM. Title: Caos en hadrones. In collaboration with Laura Muñoz Muñoz (UCM).

BSc:

• 2025 M. N. García Rey. BSc Thesis Supervised within the Bachelor in Physics at UNED. Title: Fenómenos extremos del Universo y su relación con la nucleosíntesis de elementos pesados.
• 2024 J. Egea Carro. BSc Thesis Supervised within the Bachelor in Physics at UNED. Title: Estudio de la interacción protón-nanopartícula mediante el uso del método Monte Carlo. In collaboration with Nuria Fuster Martínez (IFIC-CSIC).
• 2024 L. Collado Rivera. BSc Thesis Supervised within the Bachelor in Physics at UNED. Title: Violación de la simetría CP y análisis de la física del quark top en el contexto del Modelo Estándar.
• 2023 A. Solano Fernández-Tostado. BSc Thesis Supervised within the Bachelor in Physics at UNED. Title: Física de partículas subatómicas: Estado actual de la investigación sobre neutrinos.
• 2023 S. Martínez Ventura. BSc Thesis Supervised within the Bachelor in Physics at UNAM. Title: Estudio de los polos de la matriz de dispersión en un modelo sencillo.

Social service:

• 2018 S. Martínez Ventura (UNAM). Social Service mentor.

Fellowship programs:

• 2015-2025 HUGS International Fellowship for Graduate Students in Developing Countries.

Organization of scientific events

Organizer:

1. Workshop on Multi-Particle Reactions from the Standard Model: spectroscopy, precision tests and beyond. 28 July-1 August 2025. Berkeley CA, USA. Member of the Organizing Committee. 
2. Multi-Particle Reactions - Summer School. 14-25 July 2025. Berkeley CA, USA. Member of the Organizing Committee.
3. 19th International Conference on Hadron Spectroscopy and Structure  in memoriam Simon Eidelman (HADRON 2021). 26-31 July 2021. Mexico City, Mexico. Co-chair of the Organizing Committee.
4. 32nd National Nuclear Physics Summer School (NNPSS 2021). 23-27 June 2021. Mexico City, Mexico. Member of the Organizing Committee.
5. 10th International Workshop on Charm Physics (CHARM 2020). 17-21 May 2021. Mexico City, Mexico. Co-chair of the Organizing Committee.
6. X Escuela Mexicana de Física Nuclear. 12-21 June 2018. Mexico City, Mexico. Member of the Organizing Committee.
7. 2nd Workshop on Future Directions in Hadron Spectroscopy and Structure Analysis (FDSA2017). 7-11 November 2017. Mexico City, Mexico.  Chair of the Organizing Committee.
    

Member of the International Advisory Committee (IAC):

1. 21st International Conference on Hadron Spectroscopy and Structure (HADRON 2025). 27-31 March 2025. Osaka, Japan.
2. 20th International Conference on Hadron Spectroscopy and Structure (HADRON 2023). 5-9 June 2023. Genoa, Italy.
    

Convener:

1. 20th International Conference on Hadron Spectroscopy and Structure (HADRON 2023). 5-9 June 2023. Genoa, Italy. Convener of the session: Analysis Tools.
2. International Workshop on Partial Wave Analyses and Advanced Tools for Hadron Spectroscopy (PWA12/ATHOS7). 6-10 September 2021. Bristol, UK. Convener of the session: Heavy mesons, baryons and exotics spectroscopy.

Selected publications

Theoretical:

1. Coulomb Confinement in the Hamiltonian Limit, Physical Review D 110, 094509  (2024).
2. Dynamics in Near-Threshold J/psi Photoproduction, Physical Review D 108, 054018 (2023).
3. Deep Learning Exotic Hadrons, Physical Review D 105, L091501 (2022).
4. pi- p -> eta(') pi- p in the Double-Regge Region, European Physical Journal C 81, 647 (2021).
5. Interpretation of the LHCb Pc(4312)+ Signal, Physical Review Letters 123, 092001 (2019).
6. Determination of the Pole Position of the Lightest Hybrid Meson Candidate, Physical Review Letters 122, 042002 (2019).
7. Studying the Pc(4450) Resonance in J/psi Photoproduction off Protons, Physical Review D 94, 034002 (2016).
8. Coupled-Channel Model for KN Scattering in the Resonant Region, Physical Review D 93, 034029 (2016).
9. Upper Energy Limit of Heavy Baryon Chiral Perturbation Theory in Neutral Pion Photoproduction, Physics Letters B 724, 253 (2013).
10. Properties of Nucleon Resonances by Means of a Genetic Algorithm, Physical Review C 77, 065212 (2008).
11. Effective Lagrangian Approach to Pion Photoproduction from the Nucleon, Annals of Physics (NY) 321, 1408 (2006).

Experimental:

1. Observation of Sizeable omega Contribution to chi_c1(3872) -> pi+ pi- J/psi Decays, Physical Review D 108, L011103 (2023).
2. Observation of a Narrow Pentaquark  State, Pc(4312)+, and of Two-Peak Structure of the Pc(4450)+, Physical Review Letters 122, 222001 (2019).
3. Threshold pi0 Photoproduction on Transverse Polarised Protons at MAMI, Physics Letters B 750, 252 (2015).
4. Accurate Test of Chiral Dynamics in the gamma p-> pi0 p Reaction, Physical Review Letters 111, 062004 (2013).
5. Measurements of the Electric Form Factor of the Neutron using the Reaction 3He(e,e'n)pp up to Q2=3.4 GeV2, Physical Review Letters 105, 262302 (2010).

Reviews:

1. Hadron Physics Opportunities at FAIR, arxiv:2512.15986 [hep-ex].
2. Strong Interaction Physics at the Luminosity Frontier with 22 GeV Electrons at Jefferson Lab, European Physical Journal A 60, 173 (2024).
3. Science Requirements and Detector Concepts for the Electron-Ion Collider: EIC Yellow Report, Nuclear Physics A 1026, 122447 (2022).
4. Novel Approaches in Hadron Spectroscopy, Progress in Particle and Nuclear Physics 127, 103981 (2022).
5. The Electron-ion Scattering Experiment ELISe at the International Facility for Antiproton and Ion Research (FAIR) - A Conceptual Design Study, Nuclear Instruments and Methods in Physics Resesearch A 637, 60 (2011).

Datasets:

1. polarized gamma p -> pi0 p, A2 and CB-TAPS collaborations.
2. polarized gamma p -> pi0 polarized p, Mainz-A2 collaboration.
3. J/psi p subchannel for pentaquarks, LHCb collaboration.

Open Software:

1. Dynamics in Near-Threshold J/psi Photoproduction, Zenodo 8302620 (2023).
2. Charmonia Plot repository.
3. Nuclear and Particle Physics educational notebooks.