Theory Division

  • Theory Division

    The IFAE Theory division research focuses on Standard Model, Flavor Physics, Beyond the Standard Model, and Astroparticle and Cosmology issues. The divison is led by R. Escribano and its work comprises three main lines of research:

    Standard Model Physics and Flavor Physics (in and beyond the Standard Model)

    Working on non-perturbative aspects of QCD, quarkonium physics, and heavy-flavor physics: rare B meson decays and CP violation.

    Recent highlights include the work on the theoretical framework underpinning the so called B-flavour anomalies, a new hyperasymptotic approximation to the operator product expansion, and the precise determination of the strong coupling constant below the charm threshold.

    This research line is led by J. Matias.


    Beyond the Standard Model physics

    Working on the most intriguing questions in particle physics: the origin of the flatness and largeness of the universe, the origin of baryons and dark matter, the smallness of the Higgs mass (the hierarchy problem), or the smallness of the theta-term (the strong CP problem).

    The group has presented several novel theoretical scenarios addressing these questions that have motivated many experimental searches. They are also known for their work on more theoretical aspects, like the use of the AdS/CFT correspondence to obtain properties of strongly-coupled system.

    This research line is led by A. Pomarol.


    Astroparticle Physics and Cosmology,

    Working on dark energy, dark matter models, early-universe cosmology and on, arguably, the most enigmatic of the fundamental forces — gravity.

    Group members have made important contributions to scenarios where gravity is modified at large distances and to Lorentz-violating scenarios of quantum gravity. The group has an extended research record on axion physics, from both the phenomenology and theoretical sides. More recently, the group is contributing to primordial black hole physics, ultra-light dark matter scenarios and gravitational-wave physics from the fundamental physics perspective.

    This research line is led by O. Pujolàs.

  • Group Members

    Theory Division

    Staff Researcher

    • Diego Blas

      Diego Blas

    • Rafel Escribano

      Rafel Escribano

    • Eduard Masso

      Eduard Masso

    • Joaquim Matias

      Joaquim Matias

    • Antoni Méndez

      Antoni Méndez

    • Ramon Pascual

      Ramon Pascual

    • Santi Peris

      Santi Peris

    • Antonio Pineda

      Antonio Pineda

    • Àlex Pomarol

      Àlex Pomarol

    • Oriol Pujolàs

      Oriol Pujolàs

    • Mariano Quirós

      Mariano Quirós

    Postdoc Researcher

    • Luigi Delle Rose

      Luigi Delle Rose

    • Pere Masjuan

      Pere Masjuan

    • Evangelos Sfakianakis

      Evangelos Sfakianakis

    • Pablo Sánchez

      Pablo Sánchez

    • Ville Vaskonen

      Ville Vaskonen

    • Benedict Von Harling

      Benedict Von Harling

    • George  Zahariade

      George Zahariade

    • Ricardo Zambujal

      Ricardo Zambujal

    PhD Student

    • Cristian Alarcon

      Cristian Alarcon

    • Marcel Algueró

      Marcel Algueró

    • Yann Cado

      Yann Cado

    • Clara Fernández

      Clara Fernández

    • Angel Gil

      Angel Gil

    • Jan Ollé

      Jan Ollé

    • Lindber Salas

      Lindber Salas

    • Fabio Van Dissel

      Fabio Van Dissel

  • Selected Publications

    Theory Division

    • Boito D et al.
      Strong coupling from an improved τ vector isovector spectral function
      Physical Review d. 103 (3): (2021) [DOI] [arXiv]
    • Ayala C et al.
      Determination of α(Mz) from an hyperasymptotic approximation to the energy of a static quark-antiquark pair
      Journal Of High Energy Physics. 2020 (9): (2020) [DOI] [arXiv]
    • Escribano, Rafel et al.
      Theoretical analysis of the doubly radiative decays eta(()'()) -> pi(0)gamma gamma and eta ' -> eta gamma gamma
      Physical Review d. 102 (3): (2020) [DOI] [arXiv]
    • Ferrer F et al.
      Primordial Black Holes from the QCD Axion
      Physical Review Letters. 122 (10): 101301- (2019) [DOI] [arXiv]
    • Anzai C et al.
      S -wave heavy quarkonium spectrum with next-to-next-to-next-to-leading logarithmic accuracy
      Physical Review d. 98 (11): (2018) [DOI] [arXiv]
    • Capdevila B et al.
      Patterns of New Physics in b → sℓ+ℓ− transitions in the light of recent data
      Journal Of High Energy Physics. 2018 (1): (2018) [DOI] [arXiv]
    • Escribano R et al.
      η′ transition form factor from space- and timelike experimental data
      Physical Review d. 94 (5): (2016) [DOI] [arXiv]
    • Descotes-Genon, Sebastien et al.
      Global analysis of b -> sll anomalies
      Journal Of High Energy Physics. 2016 (6): 1-70 (2016) [DOI] [arXiv]
    • Aubin C et al.
      Finite-volume effects in the muon anomalous magnetic moment on the lattice
      Physical Review d. 93 (5): (2016) [DOI] [arXiv]
  • Group News

    New Position

    Pere Masjuan wins Associate Professorship at the Physics Department of UAB

    September 15, 2021

    Pere Masjuan has won an Associate Professorship at the Physics Department of UAB (Professor Agregat) in a position generated by himself for his outstanding achievements in research, transfer of knowledge, and outreach, starting the first of September.


    New Theory group publication

    September 8, 2021

    Lensing of gravitational waves as a probe of compact dark matter by Juan Urrutia and Ville Vaskonen has been uploaded to arXiv.


    IFAE at EPS-HEP 2021

    July 28, 2021

    The European Physical Society conference on high energy physics 2021 (EPS-HEP 2021), one of the most important conferences in HEP of the year, is taking place online this week. Three IFAE groups are participating:


    New GW and Theory group publication

    July 28, 2021

    Search for a scalar induced stochastic gravitational wave background in the third LIGO-Virgo observing run” by A. Romero-Rodriguez, Mario Martinez, O. Pujolàs, M. Sakellariadou, V. Vaskonen has been uploaded to arXiv.


    The IFAE theory group at HADRON 2021

    July 28, 2021

    The 19th International Conference on Hadron Spectroscopy and Structure in memoriam Simon Eidelman (HADRON2021) is taking place on July 26 - 31, 2021. The Theory Group at IFAE is contributing 2 talks


    New Theory group publications

    July 21, 2021

    Two new papers on gravitational waves by Theory group member Diego Blas and collaborator Alex Jenkins. Detecting stochastic gravitational waves with binary resonance and Bridging the μHz gap in the gravitational-wave landscape with binary resonance