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Bled 2024: International Workshop on Lepton Number Violation

→ Europe/Ljubljana
Plemljeva villa

Plemljeva villa

Prešernova cesta 39, 4260 Bled
Description

Breaking Lepton Number in High Energy Direct Searches 

 

 

 

 

 

Contact
  • Monday 17 June
    • 1
      Arrival and welcome
  • Tuesday 18 June
    • 2
      Didar Dobur: Experimental Search for Heavy Neutral Leptons at LHC
      HNL_BLED_2024 Didar Dobur.pdf
    • 10:15
      Kavica break
    • 3
      Jan Hajer: Heavy Neutrino-Antineutrino Oscillations
      main Jan Hajer.pdf
    • 4
      Arsenii Titov: Long-lived HNLs at the LHC: four-fermion operators
      HNL_EFT_BLED_2024_Titov Arsenii Titov.pdf
    • 12:15
      Lunch
    • 5
      Richard Ruiz: Light mesons from light heavy neutrinos at colliders

      In the context of the Phenomenological Type I Seesaw, we investigate the LHC’s sensitivity to exclusive, mesonic decay modes of long-lived, light (Dirac and Majorana) heavy neutrinos N when they are produced in the decays of W bosons. We present a new framework that combines massless QCD to describe N ’s production up to NLO in QCD via weak bosons with a low-energy effective field theory to describe N ’s decays to mesons. We provide a prescription for fast, numerical determination of N ’s partial and total widths for any mass and accounts for mesonic decay modes.

      rruiz_BLED24_HeavyNMeson Richard.pdf
    • 15:00
      Kavica break
    • 6
      Discussion
  • Wednesday 19 June
    • 7
      Fabrizio Nesti: something with left-right symmetry at colliders
    • 10:15
      Kavica break
    • 8
      Jonathan Kriewald: What's next in Left-Right
      Bled2024.pdf
    • 9
      Antonio Sidoti: Lepton Number Violation searches in ATLAS

      Lepton number is conserved in the Standard Model, therefore, any evidence for its violation would indicate the existence of new physics. This talk presents a review of the latest Lepton Number Violation searches performed by ATLAS at the LHC concerning Lepton Number Violation based on Run2 data.

      bled_2024_SIDOTI_ATLAS_3 Antonio Sidoti.pdf
    • 12:15
      Lunch
    • 15:00
      Kavica break
    • 10
      Boat Trip to the Bled Island
      IMG_6070.JPG
      TripToBledIsland.pdf
      TripToBledIsland.pdf
    • 19:00
      Workshop Dinner Bled Castle Restaurant

      Bled Castle Restaurant

      Grajska cesta 61 4260 Bled
  • Thursday 20 June
  • Friday 21 June
    • 15
      Blaž Leban: LRSM: Search for Doubly Charged Higgs bosons with the ATLAS detector + LNV Higgs decays
      Blaz Leban - Search for Doubly Charged Higgs bosons with the ATLAS detector and LNV Higgs decays Blaž Leban.pdf
    • 10:15
      Kavica break
    • 16
      Daniele Barducci: The effective theory of right-handed neutrinos at collider

      The see-saw model is the minimal framework which is able to explain the observed pattern of neutrino masses and oscillations. Right-handed neutrinos around the GeV scale are an ideal target for high-energy and high-intensity experiments. While intense experimental efforts have deeply tested this hypothesis, there remain the possibility that the origin of the neutrino sector lies in a more involved theory beyond the Standard Model, whose effect at the electroweak scale can be parametrized in terms of effective operators involving Standard Model and right-handed neutrino fields. I will discuss the associated phenomenology and show the prospects for detecting right-handed neutrinos effective interactions at present and future experimental facilities.

      barducci_BLED Daniele Barducci.pdf
    • 17
      Patrick Bolton: Probing Heavy Neutrino Magnetic Moments at the LHC Using Non-Pointing Photon Signatures
      patrickbolton_talk_Bled.pdf
    • 12:15
      Lunch
    • 15:00
      Kavica break
    • 18
      Discussion
  • Saturday 22 June
    • 19
      Chayan Majumdar: Exploring Alternative Left-Right Model: Neutrinoless double beta decay and Leptogenesis

      Left-Right (LR) theories are one of the successful beyond Standard Model scenarios to provide a unified explanation to the origin of small neutrino masses and low-energy parity violation. However, conventional LR theory faces stringent constraints due to Flavor Changing Neutral Currents (FCNCs). We have explored an Alternative LR model (ALRM) that avoids FCNC constraints and introduces new physics signatures in decay and leptogenesis. We have shown that the new type of vector-scalar diagram contributes significantly in Neutrinoless Double Beta decay (NDBD). When the relevant charged Higgs boson has mass around 200 GeV, the half-life of decaying nucleus is approximately 10^{26} years for both Ge-76 and Xe-136, which falls well within the anticipated sensitivity of future NDBD experiments. Moreover, this model has the potential to explain the correct baryogengesis, even in the presence of small Dirac CP phase in right-handed neutrino sector and without requiring any more fine-tuning, by invoking the resonant leptogenesis.

      Chayan_BLED24 chayan majumdar.pdf
    • 10:15
      Kavica break
    • 20
      Chandan Hati: Lepton Number Violation Beyond Dimension 5 Weinberg Operator
      Bled_2024_CH Chandan Hati.pdf
    • 21
      Closing and Farewell
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