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Draft:Francisco Matorras

From Wikipedia, the free encyclopedia


Francisco Matorras
Born
Francisco Matorras Weinig

1966 (age 59–60)
Santander, Spain
EducationUniversity of Cantabria
Known forDELPHI and CMS experiments; detector alignment; distributed computing for the Large Hadron Collider
Scientific career
FieldsParticle physics, experimental physics, scientific computing, data science
WorkplacesUniversity of Cantabria
Instituto de Física de Cantabria
CERN

Francisco Matorras Weinig (born 1966) is a Spanish experimental physicist specialising in particle physics. He is a professor at the University of Cantabria (UC) and a researcher at the Instituto de Física de Cantabria (IFCA), a joint research centre of the University of Cantabria and the Spanish National Research Council (CSIC).[1][2]

Matorras began his research career at CERN through the DELPHI experiment at the Large Electron–Positron Collider (LEP), where his work included precision electroweak measurements, tau lepton physics and searches for Higgs bosons. He later joined the Compact Muon Solenoid (CMS) experiment at the Large Hadron Collider (LHC), working on detector alignment, particle reconstruction and the distributed computing infrastructure used to process CMS data.[3]

As a member of the CMS Collaboration, Matorras was among the authors of the 2012 paper reporting the observation of a new boson with a mass near 125 GeV, which was subsequently identified as the Higgs boson.[4] His individually documented responsibilities within CMS have included work on the alignment of the muon system and responsibility for the IFCA LHC Computing Grid Tier-2 centre.[3][5]

Matorras has also held a number of academic-administration positions. He has served as director of IFCA, dean of the University of Cantabria's Faculty of Sciences and, from 2021 to 2026, vice-rector of the Menéndez Pelayo International University (UIMP).[6][7][8][9]

Early life and education

[edit]

Matorras was born in Santander in 1966.[10] He studied physics at the University of Cantabria, receiving the five-year Spanish Licenciado en Física degree in 1989 and a doctorate in physics from the same university in 1993.[3]

His doctoral research was carried out in connection with the DELPHI experiment at CERN's LEP collider. According to his academic curriculum, his dissertation concerned the analysis of DELPHI data for precision electroweak measurements, particularly measurements involving the tau lepton.[3] An institutional biography published by UIMP similarly describes his doctorate as dealing with precision tests of the Standard Model and tau-lepton physics.[11]

Matorras joined the teaching staff of the University of Cantabria in the early 1990s. The university stated in 2017 that he had been a professor there since 1993.[7] In May 2012 he was appointed Catedrático de Universidad, the senior rank in the Spanish university system, in the area of Atomic, Molecular and Nuclear Physics within the university's Department of Modern Physics. The appointment was published in the Boletín Oficial del Estado on 5 June 2012.[12]

Research career

[edit]

DELPHI and LEP

[edit]

Matorras's early research was conducted within DELPHI, one of the four large experiments at CERN's Large Electron–Positron Collider. His work there included tau-lepton physics, precision measurements of the electroweak sector of the Standard Model and searches for Higgs-sector particles.[3]

His 2017 academic curriculum records that he was convener of the DELPHI tau-physics group from 1996 to 2004 and of the collaboration's charged-Higgs-physics group from 1999 to 2006.[3] A biographical profile published by the Fundación Gadea para la Ciencia likewise states that he led DELPHI groups concerned with tau physics and charged Higgs bosons.[13]

Among his research from this period was the measurement of tau decay branching ratios. In 2001 Matorras and D. W. Reid published a DELPHI measurement of the one-, three- and five-prong topological branching fractions of the tau lepton.[14]

Matorras was also a member of the DELPHI Collaboration for measurements subsequently incorporated into combined LEP electroweak analyses. The final combined analysis of measurements at the Z resonance by ALEPH, DELPHI, L3, OPAL and SLD was published in Physics Reports in 2006.[15]

His LEP-era publication record also included searches for the Standard Model Higgs boson and for Higgs particles predicted in supersymmetric extensions of the Standard Model.[3]

CMS and the Large Hadron Collider

[edit]

Matorras subsequently became a member of the CMS experiment at CERN's Large Hadron Collider. His work included detector instrumentation, muon reconstruction, detector alignment, scientific computing and participation in CMS physics analyses.[3][2]

One of his principal technical activities concerned the geometrical alignment of the CMS muon detector. According to his academic curriculum, he participated in the design, prototyping, installation and operation of the CMS muon alignment system and was responsible for its alignment software for a period beginning in the 1990s.[3] IFCA's description of its CMS programme similarly identifies the design and construction of an alignment system for the CMS muon chambers as one of the institute's principal contributions to the experiment.[5]

Matorras was a co-author of instrumentation studies concerning the CMS Link alignment system. A 2009 paper analysed movements of CMS detector structures under the forces produced by the experiment's four-tesla magnetic field, using measurements from the optical alignment network.[16]

Further work on the alignment system continued after the LHC entered operation. Matorras was among the authors of a 2020 study of induced photocurrents in amorphous-silicon position detectors used by the CMS Link system. The study analysed operating data collected between 2008 and 2018.[17]

LHC computing

[edit]

Matorras has also worked extensively on the distributed computing infrastructure required for LHC data analysis. IFCA operates a Worldwide LHC Computing Grid Tier-2 centre supporting CMS, and IFCA identifies Matorras as the person responsible for its Tier-2 facility.[5]

His curriculum records that he represented Spain in several CMS and LHC computing bodies, including the WLCG Collaboration Board, CMS Computing Committee, Computing Resource Board and Computing Finance Board.[3] A University of Cantabria research-project record names him as the responsible researcher for the project Centro de procesado de datos para el LHC: Tier-2 para el experimento CMS (IFCA), which ran from 2014 to 2018 and received €847,000 in recorded funding.[18]

This computing work complemented IFCA's participation in CMS detector construction and physics analysis. The institute describes its CMS programme as combining development of the muon alignment system, operation of Tier-2 computing resources and research in areas including Higgs, supersymmetry, top-quark and dark-matter physics.[5]

Higgs-boson research

[edit]

Matorras participated in searches for Higgs bosons during both the LEP and LHC periods of his career.[3] At LEP, he was involved in charged-Higgs analyses and was a member of DELPHI when the LEP experiments conducted searches for the Standard Model and supersymmetric Higgs sectors.[3][13]

At the LHC he was a member of CMS when the collaboration observed a previously unknown boson near 125 GeV. The CMS discovery paper, published in Physics Letters B in 2012, combined several decay channels and reported an excess with a local statistical significance of 5.0 standard deviations near 125 GeV.[4] Matorras appears in the CMS author list as a member of the Instituto de Física de Cantabria group.[4]

The result was a collective achievement of the CMS Collaboration rather than an individual discovery by Matorras. His separately documented contributions to CMS included detector alignment, scientific computing, muon reconstruction and service on collaboration committees.[3] His 2017 curriculum records membership of the CMS Publication Committee and Statistics Committee and participation in analysis-review activities.[3]

Matorras has continued to be listed as an author of CMS publications. His University of Cantabria research profile contained more than 1,300 publication records by 2026, including recent CMS measurements of Higgs production and boosted W-boson decays.[1]

Academic leadership

[edit]

Matorras has held a number of management positions in Spanish research and higher education. He formally took office as director of the Instituto de Física de Cantabria in February 2008.[6] Contemporary reports continued to identify him as IFCA director in 2010 and 2011.[19][20] His 2017 curriculum gives his IFCA directorship as 2008–2012.[3]

He later became dean of the University of Cantabria's Faculty of Sciences. When he began another term as dean in May 2017, the university stated that he had already occupied the post for the preceding four years.[7] UIMP later described his period as dean as extending from 2014 to 2021.[11]

In November 2021 Matorras was appointed UIMP's Vice-Rector for the Las Llamas Campus and Coordination of Teaching and Research Centres, with effect from 21 November 2021.[8] He left the vice-rectorate at his own request with effect from 2 February 2026.[9]

Data science and teaching

[edit]

Alongside particle physics, Matorras has worked on scientific computing and data science. His 2017 curriculum described data science as an increasingly important component of his work and linked this activity to experience with instrumentation, computing and large-scale particle-physics datasets.[3]

He has participated in the development of graduate data-science education at the University of Cantabria and UIMP. For the 2026–27 academic year, UIMP listed Matorras and physicist Lara Lloret Iglesias as the academic directors of the inter-university Master's Degree in Data Science.[21]

University of Cantabria teaching records for 2026 list Matorras in the Department of Modern Physics and show teaching activity in the bachelor's degree in physics as well as the master's programme in data science.[22]

His research curriculum also records technology-transfer projects involving offshore wind power, photovoltaic-module testing, metrology and laser-alignment sensors, reflecting applications of instrumentation and measurement techniques outside high-energy physics.[3]

Bibliometrics and public recognition

[edit]

Because Matorras has spent much of his career in large experimental collaborations, his bibliography includes a very large number of collectively authored papers. The University of Cantabria's research portal listed more than 1,300 publications under his name in 2026.[1]

In November 2023 the CSIC published an updated ranking based on public Google Scholar profiles covering more than 123,000 researchers. The CSIC stated that the list was headed by particle physicists Francisco Matorras Weinig and Alberto Ruiz Jimeno of IFCA and Sergio González Sevilla of the University of Geneva.[23]

EFE reported the following month that Matorras's Google Scholar profile was associated with more than 300,000 citations and approximately one thousand papers at that time.[10] Matorras cautioned against interpreting the ranking as a direct comparison of individual scientific merit, noting that publication and citation practices in particle physics differ substantially from those in many other disciplines and that large experiments produce numerous collectively authored papers.[10]

Selected publications

[edit]
  • Matorras, F.; Reid, D. W. (2001). "Measurement of the τ topological branching ratios". Nuclear Physics B - Proceedings Supplements. 98 (1–3): 191–200. Bibcode:2001NuPhS..98..191M. doi:10.1016/S0920-5632(01)01223-3.
  • García-Moral, L. A.; Gómez, G.; González-Sánchez, F. J.; Martínez-Rivero, C.; Matorras, F.; et al. (2009). "Motions of CMS detector structures due to the magnetic field forces as observed by the Link alignment system during the test of the 4 T magnet solenoid". Nuclear Instruments and Methods in Physics Research Section A. 606 (3): 344–361. Bibcode:2009NIMPA.606..344G. doi:10.1016/j.nima.2009.03.252. hdl:10261/420827.
  • Calderón, A.; Fernández, M. G.; Gómez, G.; González-Sánchez, F. J.; Martínez-Rivero, C.; Matorras, F.; et al. (2020). "A survey of the induced currents on the photodetectors used in the CMS Link alignment system". Nuclear Instruments and Methods in Physics Research Section A. 960 163639. Bibcode:2020NIMPA.96063639C. doi:10.1016/j.nima.2020.163639.

References

[edit]
  1. 1 2 3 "Francisco Matorras Weinig". Researchers Portal. University of Cantabria. Retrieved 12 September 2026.
  2. 1 2 "Francisco Matorras Weinig". Instituto de Física de Cantabria (in Spanish). IFCA, CSIC–University of Cantabria. Retrieved 12 September 2026.
  3. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 "Short CV — Francisco Matorras Weinig" (PDF). Complutense University of Madrid. 15 December 2017. pp. 34–38. Retrieved 12 September 2026.
  4. 1 2 3 CMS Collaboration (2012). "Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC". Physics Letters B. 716 (1): 30–61. arXiv:1207.7235. Bibcode:2012PhLB..716...30C. doi:10.1016/j.physletb.2012.08.021.
  5. 1 2 3 4 "CMS". Instituto de Física de Cantabria. IFCA, CSIC–University of Cantabria. Retrieved 12 September 2026.
  6. 1 2 "Francisco Matorras, Ángel Pazos e Íñigo Losada toman posesión como directores de IFCA, IBBTEC e IH Cantabria". Europa Press (in Spanish). 14 February 2008. Retrieved 12 September 2026.
  7. 1 2 3 "Francisco Matorras continúa al frente de la Facultad de Ciencias" (in Spanish). University of Cantabria. 3 May 2017. Retrieved 12 September 2026.
  8. 1 2 "Orden UNI/1327/2021, de 19 de noviembre, por la que se disponen ceses y nombramientos de Secretario/a General y de Vicerrector/a de la Universidad Internacional Menéndez Pelayo". Boletín Oficial del Estado (in Spanish). Government of Spain. 30 November 2021. Retrieved 12 September 2026.
  9. 1 2 "Orden CNU/91/2026, de 9 de febrero, por la que se dispone el cese y nombramiento de Vicerrectores de la Universidad Internacional Menéndez Pelayo". Boletín Oficial del Estado (in Spanish). Government of Spain. 12 February 2026. Retrieved 12 September 2026.
  10. 1 2 3 "El científico más buscado de España descifra los datos del acelerador de partículas". EFE (in Spanish). 27 December 2023. Retrieved 12 September 2026.
  11. 1 2 "Francisco Matorras Weinig". Menéndez Pelayo International University. UIMP. Retrieved 12 September 2026.
  12. ↑ "Resolución de 23 de mayo de 2012, de la Universidad de Cantabria, por la que se nombra Catedrático de Universidad a don Francisco Matorras Weinig". Boletín Oficial del Estado (in Spanish). Government of Spain. 5 June 2012. Retrieved 12 September 2026.
  13. 1 2 "Matorras Weining, Francisco". Fundación Gadea Ciencia (in Spanish). Retrieved 12 September 2026.
  14. ↑ Matorras, F.; Reid, D. W. (2001). "Measurement of the τ topological branching ratios". Nuclear Physics B - Proceedings Supplements. 98 (1–3): 191–200. Bibcode:2001NuPhS..98..191M. doi:10.1016/S0920-5632(01)01223-3.
  15. ↑ Schael, S.; et al. (2006). "Precision electroweak measurements on the Z resonance". Physics Reports. 427 (5–6): 257–454. arXiv:hep-ex/0509008. Bibcode:2006PhR...427..257A. doi:10.1016/j.physrep.2005.12.006.
  16. ↑ García-Moral, L. A.; Gómez, G.; González-Sánchez, F. J.; Martínez-Rivero, C.; Matorras, F.; et al. (2009). "Motions of CMS detector structures due to the magnetic field forces as observed by the Link alignment system during the test of the 4 T magnet solenoid". Nuclear Instruments and Methods in Physics Research Section A. 606 (3): 344–361. Bibcode:2009NIMPA.606..344G. doi:10.1016/j.nima.2009.03.252. hdl:10261/420827.
  17. ↑ Calderón, A.; Fernández-García, M. G.; Gómez, G.; González-Sánchez, F. J.; Martínez-Rivero, C.; Matorras, F.; et al. (2020). "A survey of the induced currents on the photodetectors used in the CMS Link alignment system". Nuclear Instruments and Methods in Physics Research Section A. 960 163639. Bibcode:2020NIMPA.96063639C. doi:10.1016/j.nima.2020.163639.
  18. ↑ "Centro de procesado de datos para el LHC: Tier-2 para el experimento CMS (IFCA)". Researchers Portal (in Spanish). University of Cantabria. Retrieved 12 September 2026.
  19. ↑ "Un total de 42 jóvenes participan en la jornada divulgativa del IFCA sobre física de partículas". Europa Press (in Spanish). 5 March 2010. Retrieved 12 September 2026.
  20. ↑ "El IFCA y el Instituto Tecnológico de Aragón colaborarán en proyectos en el ámbito de Física de altas energías". Europa Press (in Spanish). 1 May 2011. Retrieved 12 September 2026.
  21. ↑ "Master's Degree in Data Science". Menéndez Pelayo International University. UIMP. Retrieved 12 September 2026.
  22. ↑ "Matorras Weinig, Francisco". Faculty of Sciences (in Spanish). University of Cantabria. Retrieved 12 September 2026.
  23. ↑ "El CSIC actualiza el ranking de investigadores españoles en Google Scholar con 10.000 nuevos perfiles" (in Spanish). Spanish National Research Council. 20 November 2023. Retrieved 12 September 2026.
[edit]

Category:1966 births Category:Living people Category:Spanish physicists Category:Experimental physicists Category:Particle physicists Category:People associated with CERN Category:University of Cantabria alumni Category:Academic staff of the University of Cantabria Category:People from Santander, Spain

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