The quest for new physics

Casa de la Ciencia del CSIC

Casa de la Ciencia del CSIC

Cl. Bailía, nº 1 46003 Valencia

With the discovery of the Higgs boson, High-Energy Physics is ready for the next step. Although there has been so far no conclusive signs of new physics from the LHC, the discovery of neutrino oscillations convincingly indicates that it is lurking somewhere, perhaps nearby. A new generation of neutrino experiments such as DUNE and Hyper-K, as well as large-scale projects like the Future Circular Collider at CERN, the International Linear Collider in Japan, or the Circular electron positron Collider and Super proton-proton Collider in China will shape the future of our field.


In this workshop, the major question of where to seek for signs of new physics will be discussed from a neutrino physics perspective. We want phenomenologists and experimentalists to come together to discuss topics related to neutrino physics of current and future interest.


Workshop partly funded by the Project PROMETEO/2018/165, Generalitat Valenciana.



-Neutrino oscillation phenomenology

-Theories beyond the Standard Model

-Current and future experiments

-Cosmological implications


Note there is a registration fee of 100 Euros to be paid in cash upon arrival. This includes coffee breaks and social dinner.


Organizing committee

- Stefano Gariazzo
- Martin Hirsch
- Sergio Pastor
- Rahul Srivastava
- Mariam Tórtola
- José W.F. Valle
- Avelino Vicente

Scientific secretaries

- Salva Centelles
- Mario Reig
- Christoph A. Ternes





  • Abdelhak Djouadi
  • Aitor Alvarado Vargas
  • Anjan Giri
  • Anselmo Cervera Villanueva
  • Arka Santra
  • Avelino Vicente
  • Cesar Bonilla
  • Christoph Andreas Ternes
  • David Albandea Jordán
  • David G. Cerdeño
  • Dimitrios Papoulias
  • Eduardo Ros Martínez
  • Ernest Ma
  • Filipe Joaquim
  • Francesco Forastieri
  • Francisco Botella
  • Francisco Javier Escrihuela Ferrándiz
  • Fredrik Björkeroth
  • Gabriele Parimbelli
  • Gaetana Anamiati
  • Gui-Jun Ding
  • Isabel Cordero Carrión
  • Isabel Oldengott
  • Ivania Maturana
  • Javier Castellano
  • Jihn E. Kim
  • Jorge Terol Calvo
  • Jose W.F Valle
  • Juan Antonio Fuster Verdu
  • Juande Zornoza
  • Judita Mamuzic
  • Julia Harz
  • Laura Duarte
  • Luca Visinelli
  • Marcel Vos
  • Maria Archidiacono
  • Mariam Tórtola
  • Mario Reig
  • Martin Hirsch
  • Martin Perello
  • María Luisa López Ibáñez
  • Massimiliano Lattanzi
  • Mehedi Masud
  • Michael Ratz
  • Miguel Ardid
  • Miguel D. Campos
  • Miguel Nebot
  • Mu-Chun Chen
  • Newton Nath
  • Olga Mena
  • Pablo Escribano
  • Pablo Gomis
  • Pablo Martínez
  • Poonam Mehta
  • Rahul Srivastava
  • Ranjan Laha
  • Renato Fonseca
  • Ricardo Cepedello
  • Riccardo Murgia
  • Rukmani Mohanta
  • Salvador Centelles Chuliá
  • Sergio Pastor
  • Stefano Gariazzo
  • Tarak Thakore
  • Thomas Weiler
  • Tim Brune
  • Vasiliki Mitsou
  • Víctor Bresó Pla
  • Víctor Martín Lozano
  • Xunjie Xu
    • 08:30 08:50
      Registration 20m
    • 08:50 09:00
      Welcome 10m
    • 09:00 10:30
      Session 1
      • 09:00
        Dirac neutrinos and Dark Matter 30m
        Speaker: Ernest Ma (University of California, Riverside)
      • 09:30
        Nu physics in direct dark matter detection 30m
        Speaker: David G. Cerdeño (IPPP, Durham University)
      • 10:00
        Constraints on neutrino physics from CMB observations 30m
        Speaker: Massimiliano Lattanzi (Universita' di Ferrara)
    • 10:30 11:00
      Coffee break 30m
    • 11:00 13:00
      Session 2
      • 11:00
        Invisible axion DM and GUTs 30m

        Inspired from GUTs and string compactification, I will discuss the oscillating axion energy, flavors with CKM matrix.

        Speaker: Jihn E. Kim (Kyung Hee University)
      • 11:30
        Exploring dark matter, neutrino mass and R_K* anomalies in L_\mu - L_\tau model 30m

        We investigate Majorana dark matter in a new variant of $U(1)_{L_\mu-L_\tau}$ gauge extension of Standard Model, where the scalar sector is enriched with an inert doublet and a $(\bar{3},1,1/3)$ scalar leptoquark. We compute the WIMP-nucleon cross section in leptoquark portal and the relic density mediated by inert doublet components, leptoquark and the new $Z^\prime$ boson. We constrain the parameter space consistent with PLANCK limit on relic density, PICO-60 and LUX bounds on spin-dependent direct detection cross section. Furthermore, we constrain the new couplings from the present experimental data from flavour sector such as $Br (\tau \to \mu \nu_\tau \bar \nu_\mu)$, $B_s-\bar{B_s}$ mixing etc, which occur at one-loop level in the presence of $Z^\prime$ and leptoquark. Using the allowed parameter space, we estimate the lepton non-universality parameters $R_K^*$ and $R_\phi$. We also briefly discuss about the neutrino mass generation at one-loop level.

        Speaker: Prof. Rukmani Mohanta (University of Hyderabad)
      • 12:00
        Dark Matter - when 3-body final states dominate 2-body 30m

        An overview of Dark Mattter suppressions and enhancements will be presented.

        Speaker: Prof. Thomas Weiler (Vanderbilt University)
      • 12:30
        Restricted texture in SS-I 30m
        Speaker: Filipe Joaquim (CFTP, IST)
    • 13:00 15:00
      Lunch 2h
    • 15:00 16:00
      Session 3
      • 15:00
        Non-renormalizable interactions of the Standard Model fields 20m

        The Standard Model fields can interact through non-renormalizable operators, the simplest of which is the one mentioned by Weinberg, with dimension 5. The list of all such operators up to dimension 6 is known and, since the last few years, so is the number of all effective interactions up to dimension 15. However, counting operators and listing them explicitly are different things. In this presentation I will talk about the challenges associated to writing down the Standard Model non-renormalizable interactions beyond dimension 6.

        Speaker: Renato Fonseca (IFIC - Valencia)
      • 15:20
        Master Majorana neutrino mass parametrization 20m

        After discussing the general form of a Majorana neutrino mass matrix we will introduce a master parametrization for the Yukawa matrices in agreement with neutrino oscillation data. This parametrization extends previous results in the literature and can be used for any model that induces Majorana neutrino masses with the seesaw mechanism. The application of the master parametrization will be illustrated with several examples.

        Speaker: Dr. Isabel Cordero Carrión (University of Valencia)
      • 15:40
        Neutrino Phenomenology from A5 x CP 20m

        We analyse the phenomenological implication for lepton masses and mixing implied by the breaking of the discrete symmetries A5 x CP into the subgroups Z2 x CP in the neutrino sector and Z5 in the charged lepton sector with and without supersymmetry.

        Speaker: María Luisa López Ibáñez (Universidad de Valencia)
    • 16:00 16:30
      Coffee break 30m
    • 16:30 17:50
      Session 4
      • 16:30
        Majoron Dark Matter and Constraints on the Majoron-Neutrino Coupling 20m

        We revisit a singlet Majoron model in which neutrino masses arise from the spontaneous violation of lepton number. If the Majoron obtains a mass of order MeV, it can play the role of dark matter. We discuss constraints on the couplings of the massive Majoron to neutrinos from supernova data and from neutrinoless double beta decay with Majoron emission. The combination of both constraints excludes a large range of Majoron-Neutrino couplings in the mass range of intererest for Majoron dark matter.

        Speaker: Mr. Tim Brune (TU Dortmund)
      • 16:50
        The promising future of a robust cosmological neutrino mass measurement 20m

        The impact of massive neutrinos on cosmological observables comes from a very peculiar effect: light massive neutrinos behave as radiation before their non-relativistic transition, while afterwards they gradually become a matter component. For that reason, combination of high- and low- redshift probes can provide very tight, yet model dependent, constraints on the neutrino mass sum. In this talk I will show how future galaxy surveys can potentially pin down the neutrino mass sum.​

        Speaker: Maria Archidiacono (RWTH Aachen University)
      • 17:10
        Flavour symmetry as the origin of the axion 20m

        Motivated by recent interest in the connection between axions and flavour, we investigate a generic, generation-dependent U(1) quark flavour symmetry, with emphasis on achieving maximal reduction in the number of free Yukawa parameters. We find that there are only two inequivalent Yukawa textures, each one giving rise to six physically distinct models. The U(1) symmetries that generate these textures all have a QCD anomaly, and hence are PQ symmetries. The resultant axion has flavour-violating couplings to quarks, and in some cases the coupling to nucleons can be suppressed, rendering the axion nucleophobic.

        Speaker: Dr. Fredrik Björkeroth (INFN Frascati)
      • 17:30
        How to weaken the cosmological neutrino mass bound 20m
        Speaker: Ms. Isabel Oldengott (University of Valencia)
    • 09:00 10:30
      Session 5
      • 09:00
        Discrete Family Symmetries and CP Violation 30m
        Speaker: Prof. Mu-Chun Chen (UC Irvine)
      • 09:30
        CP violation from strings 30m
        Speaker: Michael Ratz (UC Irvine)
      • 10:00
        Spontaneous CP Violation and Controlled Scalar FCNC in a 2HDM 30m

        A 2HDM where all CP Violation originates from the vacuum state is presented. The model includes Scalar Flavour Changing Neutral Couplings which are shown to be controlled. The viability of the model is illustrated in a phenomenological analysis, including beyond-SM observation prospects

        Speaker: Miguel Nebot (U. of Valencia - IFIC)
    • 10:30 11:00
      Coffee break 30m
    • 11:00 13:00
      Session 6
      • 11:00
        The International Linear Collider, status and scientific case 30m
        Speaker: Juan Antonio Fuster Verdu (IFIC (Instituto de Fisica Corpuscular))
      • 11:30
        The origin of flavor mixing from dihedral groups and Dirac neutrino masses 30m
        Speaker: Gui-Jun Ding (University of Science and Technology of China)
      • 12:00
        Some aspects of Leptogenesis with discrete flavor symmetry 30m

        We will briefly discuss about a scenario of Leptogenesis with the simple S_3 discrete flavor symmetry. In order to explain the neutrino phenomenology we will incorporate Type-I and II seesaw scenarios with additional right handed neutrinos and scalar triplets. Thereafter, we will attempt to explain the baryon asymmetry and discuss the prospects.

        Speaker: Prof. Anjan Giri (IIT Hyderabad)
      • 12:30
        A global fit of right-handed neutrinos with GAMBIT 30m
        Speaker: Dr. Julia Harz (Technical University of Munich (TUM) )
    • 13:00 15:00
      Lunch 2h
    • 15:00 16:00
      Session 7
      • 15:00
        New physics in coherent neutrino scattering 20m

        In this talk, I am going to review the recent progress of coherent neutrino-nucleus scattering experiments and summarize the constraints on various BSM physics, including NSI, SPVAT interactions, sterile neutrinos, light mediators, neutrino magnetic moments, dark matter, etc.

        Speaker: Dr. Xunjie Xu (Max-Planck-Institut für Kernphysik)
      • 15:20
        Impact of non-standard interactions at long baseline experiments 20m
        Speaker: Dr. Poonam Mehta (Jawaharlal Nehru University)
      • 15:40
        Constraining invisible neutrino decay with atmospheric neutrinos 20m
        Speaker: Tarak Thakore (IFIC)
    • 16:00 16:30
      Coffee break 30m
    • 16:30 17:30
      Session 8
      • 16:30
        Cuckoo's Eggs in Neutron Stars: Can LIGO Hear Chirps from the Dark Sector? 20m

        We explore in detail the possibility that gravitational wave signals from binary inspirals are affected by a new force that couples only to dark matter particles. We discuss the impact of both the new force acting between the binary partners as well as radiation of the force carrier. We identify numerous constraints on any such scenario, ultimately concluding that observable effects on the dynamics of binary inspirals due to such a force are not possible if the dark matter is accrued during ordinary stellar evolution. Constraints arise from the requirement that the astronomical body be able to collect and bind at small enough radius an adequate number of dark matter particles, from the requirement that the particles thus collected remain bound to neutron stars in the presence of another neutron star, and from the requirement that the theory allows old neutron stars to exist and retain their charge. Thus, we show that any deviation from the predictions of general relativity observed in binary inspirals must be due either to the material properties of the inspiraling objects themselves, such as a tidal deformability, to a true fifth force coupled to baryons, or to a non-standard production mechanism for the dark matter cores of neutron stars. Viable scenarios of the latter type include production of dark matter in exotic neutron decays, or the formation of compact dark matter objects in the early Universe that later seed star formation or are captured by stars.

        Speaker: Dr. Ranjan Laha (Johannes Gutenberg University Mainz)
      • 16:50
        The Cold Dark Matter axion and Axion Stars 20m
        Speaker: Dr. Luca Visinelli (Uppsala University)
      • 17:10
        A general framework for modeling the small scale power in non-standard cosmologies 20m

        Structure formation at small cosmological scales provides an important frontier for Dark Matter (DM) research. Scenarios with small DM particle masses, large momenta or hidden interactions tend to suppress the gravitational clustering at small scales, inducing a cut-off in the matter power spectrum P(k) on such small scales. So far, many non-cold DM (nCDM) candidates have been proposed in order to give a better description of the structure formation and distribution at small scales, with respect to the standard cold DM (CDM) model. The details of the small-scale power suppression, usually described by the so-called transfer function T^2(k)=P_nCDM(k)/P_CDM(k), depend on the DM particle nature, allowing for a direct link between DM models and astrophysical observations. However, most of the constraints currently available refer to a very specific shape of transfer function T(k), corresponding to thermal warm DM, i.e. candidates with a Fermi-Dirac momentum distribution. Nonetheless, most of the viable dark matter candidates are not characterised by a thermal momentum distribution. In this talk, I will present a general analytical fitting formula for the transfer function T(k), which is able to reproduce a large variety of shapes in the suppression of the power spectrum. I will show that it covers the parameter space of the most popular nCDM scenarios, such as sterile neutrinos, mixed (cold + warm) models, ultralight scalar DM and other models suggested by effective field theory of structure formation. Finally, I will discuss the first astrophysical constraints on its free parameters, obtained through a comprehensive analysis of the Lyman-alpha forest data and easily translatable to bounds on the fundamental nCDM properties.

        Speaker: Mr. Riccardo Murgia (SISSA, Trieste)
    • 21:00 00:00
      Social dinner 3h Pan Comido

      Pan Comido

      Carrer del Pintor Vila Prades, 10 46008 Valencia
    • 09:30 11:00
      Session 9
      • 09:30
        Prospects for SUSY discovery with MoEDAL 30m

        We present a study on searches for supersymmetric metastable particles at the MoEDAL detector. MoEDAL is sensitive to highly ionising objects such as magnetic monopoles or massive long-lived charged particles and we focus on the latter in this talk. Requirements for triggering or reducing cosmic-ray and cavern backgrounds, applied in ATLAS and CMS analyses, are not necessary at MoEDAL, due to its different detector concept, requiring slow-moving particles, and low background. Using Monte Carlo simulations, we compare the sensitivities of MoEDAL versus ATLAS/CMS for various long-lived particles in supersymmetric models, and seek a scenario where MoEDAL can act in a complementary way to ATLAS and CMS.

        Speaker: Vasiliki Mitsou (IFIC Valencia)
      • 10:00
        Higgs portal DM at colliders 30m
        Speaker: Abdelhak Djouadi (LPT Orsay)
      • 10:30
        Production of Magnetic Monopoles Via Photon Fusion and search results from MoEDAL experiment 30m

        If the Dirac magnetic monopoles exist, they can be probed in the collider experiments. In the previous searches, only the Drell-Yan production mechanism of magnetic monopoles was used to look for these particles. But the cross-section of the photon-fusion production mechanism of the magnetic monopoles is higher than that of the Drell-Yan production mechanism at the LHC energy. I will discuss the photon-fusion production mechanism of spins 0, 1⁄2 and 1 magnetic monopoles using MadGraph event generator. I will also compare the kinematic and angular distributions of magnetic monopoles having those three spins. The comparison between Drell-Yan process and photon-fusion process will also be shown (from Baines et. al. arXiv:1808.08942 [hep-ph]). I will discuss the monopole search results of MoEDAL experiment (from Physics Letters B, 782, (2018), where this experiment has set the strongest limits on monopoles of high magnetic charge.

        Speaker: Arka Santra (Instituto de Fisica Corpuscular)
    • 11:00 11:30
      Coffee break 30m
    • 11:30 13:00
      Session 10
      • 11:30
        Status of KM3NeT and results from ANTARES 30m

        I will review the most recent results of the ANTARES neutrino telescopes and describe the status and physics program of its successor, KM3NeT, already in construction.

        Speaker: Juande Zornoza (IFIC)
      • 12:00
        The DUNE experiment 30m

        DUNE is a next-generation neutrino oscillation experiment whose main goal is to discover CP violation in the leptonic sector and measure the mass hierarchy in a single experiment. It has a very rich scientific program that also includes proton decay searches, supernovae burst neutrino detection and beyond standard model physics. In this talk the experiment and his current status will be described as well as his physics potencial.

        Speaker: Anselmo Cervera (IFIC)
      • 12:30
        Supersymmetry searches at the ATLAS experiment 30m

        Supersymmetry represents an important theory in physics Beyond the Standard Model which postulates a symmetry between fermions and bosons, and introduces a new set of particles at the electroweak scale. An overview of recent results in SUSY searches using strong, electroweak, third generation production, R-parity violation models, and long lived particles, using 13 TeV Run 2 ATLAS data will be presented. Emphasis will be given to models related to neutrino physics, such as the Bilinear R-parity violation (bRPV) model, where the results of 8 TeV searches will be shown.

        Speaker: Judita Mamuzic (IFIC/CSIC)
    • 13:00 15:00
      Lunch 2h
    • 15:00 16:20
      Session 11
      • 15:00
        Are the neutrinos driving the SM to the Swampland? 20m

        It is known that not every effective field theory could be embedded in quantum gravity, but only those which are consistent with the QG conjectures. Does these constraints have an impact in low energy physics? Recently, Ooguri and Vafa argued using a strong approach of the Weak Gravity Conjecture that non-supersymmetric stable AdS vacua are incompatible with quantum gravity. It is also known that compactifying the Standard Model to 3 or 2 dimensions can give rise to AdS vacua. Using the fact that those vacua must be absent, several constraints are set on the SM and BSM particles, obtaining a lower bound on the cosmological constant in terms of the masses of the neutrinos. Moving forward one can translate those into an upper bound for the EW scale around the TeV range.

        Speaker: Dr. Víctor Martín Lozano (Bonn University -- BCTP )
      • 15:20
        Dynamical generation of fermion masses in a warped extra dimension 20m

        We explore the possibility of dynamically generating bulk fermion masses with an odd bulk scalar in warped extra dimensions. The odd bulk scalar acquires vacuum expectation value (VEV) along the extra-dimension and its Yukawa interactions with bulk fermions generate their bulk masses. The zero-mode localization of fermions along the warped extra dimension naturally explain the observed flavor structure and 4D fermion mass hierarchy of the SM fermions. We study the phenomenological implications of first KK mode of the scalar field and its interaction with SM Higgs, which is localized at the IR brane.

        Speaker: Mr. Javier Castellano (JGU Mainz)
      • 15:40
        Cosmic neutrinos vs. galactic feedback 20m

        Massive neutrinos and baryon feedback both suppress the matter power spectrum at small scales and are therefore expected to be degenerate with each other. I will show that this degeneracy is not perfect and can indeed be broken by performing tomography on the cold dark matter and shear power spectra. Neutrino effects and non-linearities are included through fitting functions to N-body simulations, while for baryon feedback I employ the Baryon Correction Model, whose parameters have well-established physical meaning. In the last part I also include the intrinsic alignment effect in weak lensing and show that not even this systematic will likely bias the measurement on neutrino mass.

        Speaker: Mr. Gabriele Parimbelli (SISSA)
      • 16:00
        Search for Right-Handed Neutrinos from Dark Matter Annihilation with Fermi-LAT and H.E.S.S. Telescopes 20m

        The best strategy for indirect detection of dark matter depends entirely on its annihilation processes. In this work we discuss a model independent probe for dark matter annihilations into right-handed neutrinos in the GeV-TeV mass range, using dwarf spheroidal galaxies and the galactic center observations performed by Fermi-LAT and H.E.S.S., respectively. We exclude the thermal annihilation cross section for dark matter masses below 200 GeV.

        Speaker: Miguel Campos (King's College London)
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