New observational windows on the high-scale origin of matter-antimatter asymmetry

Asia/Tokyo
Online

Online

Description

Dates: January 10-14,  2022 (JST)

Venue: Online event

Overview:

The matter-antimatter asymmetry is one of the fundamental mysteries motivating research of physics beyond the Standard Model. Research in this area literately attempts to answer the question of why are we here. Unfortunately, the most elegant explanations frequently involve physics many orders of magnitude above the weak scale. There has been much recent progress on how to test these ideas.  Furthermore, the advent of gravitational waves astronomy opens a new observational window on the origin of matter in the universe. 

Given the fundamental nature of this problem and the ``out of the box'' thinking required to tackle it, we will dedicate a focus week in early January with a minimum number of talks to allow room for discussion and brainstorming. The talks that are given will summarize recent progress in the two main paradigms (Leptogenesis and Affleck Dine) and summarize other high scale paradigms with an emphasis on how to test them.

 

Confirmed speakers

Dr Iason Baldes
Dr Pasquale Di Bari
Dr Neil Barrie
Dr Raymond Co
Prof Yanou Cui
Dr Valerie Domcke
Dr David Dunsky
Dr Marcos M. Flores
Dr Julia Harz
Dr Renata Kallosh
Prof Masahiro Kawasaki
Prof Kaz Kohri
Dr David Marsh
Dr Nobuchika Okada
Dr Silvia Pascoli
Dr Lauren Pearce
Prof Serguey Petcov
Prof Michael Ramsey-Musolf
Prof Misao Sasaki
Dr Geraldine Servant
Dr Jessica Turner
Dr Isaac Wang
Prof Masaki Yamada

 

 

Organizers:

Graham White
Alex Kusenko
Hitoshi Murayama

 

Diversity Coordinator:  Hitoshi Murayama

Address:
Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU),
the University of Tokyo, 5-1-5 Kashiwa-no-ha, Kashiwa City, Chiba 277-8583, Japan

 


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Registration
Registration
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    • 8:00 PM 9:00 PM
      High-temperature electroweak symmetry non-restoration and implications for baryogenesis 1h
      Speaker: Geraldine Servant
    • 9:00 PM 10:00 PM
      Baryogenesis via relativistic bubble expansion 1h
      Speaker: Iason Baldes
    • 10:00 PM 10:30 PM
      Break 30m
    • 10:30 PM 11:30 PM
      GWs from metastable cosmic strings 1h
      Speaker: Valerie Domcke
    • 11:30 PM 12:30 AM
      Gravitational Wave Gastronomy 1h
      Speaker: David Dunsky
    • 12:30 AM 1:30 AM
      Inflation in String theory and Supergravity 1h
      Speaker: Renata Kallosh
    • 1:30 AM 2:30 AM
      Discussion 1h
    • 8:00 PM 9:00 PM
      Confronting GUTs with Proton Decay and Gravitational Waves 1h
      Speaker: Jessica Turner
    • 9:00 PM 10:00 PM
      Neutrinoless double beta decay and leptogenesis 1h
      Speaker: Silvia Pascoli
    • 10:00 PM 10:30 PM
      Break 30m
    • 10:30 PM 11:30 PM
      Probing Baryogenesis 1h
      Speaker: Harz Julia
    • 11:30 PM 12:30 AM
      SO(10)-inspired leptogenesis 1h
      Speaker: Pasquale Di Bari
    • 12:30 AM 1:30 AM
      Aspects of High Scale Leptogenesis with Low Energy CP Violation (Recent Results) 1h
      Speaker: Serguey Petcov
    • 1:30 AM 2:30 AM
      Discussion 1h
    • 8:00 PM 9:00 PM
      Field space geometry and Affleck-Dine Baryogengesis (cancelled) 1h
      Speaker: David Marsh
    • 9:00 PM 10:00 PM
      Affleck-Dine Leptogenesis from Higgs Inflation 1h
      Speaker: Neil Barrie
    • 10:00 PM 10:30 PM
      Break 30m
    • 10:30 PM 11:30 PM
      PBH clustering in AD baryogenesis 1h
      Speaker: Kawasaki
    • 11:30 PM 12:30 AM
      Gravitational Wave Signals of Affleck-Dine Baryogenesis 1h
      Speaker: Lauren Pearce
    • 12:30 AM 1:30 AM
      Affleck-Dine Baryogenesis with Observable Neutron-Anti-Neutron Oscillation 1h
      Speaker: Nobuchika Okada
    • 1:30 AM 2:30 AM
      The cosmological collider as a probe of leptogenesis 1h
      Speaker: Yanou Cui
    • 2:30 AM 3:30 AM
      Discussion 1h
    • 7:00 PM 8:00 PM
      Leptoflavorgenesis: baryon asymmetry of the Universe from lepton flavor violation 1h

      Charged-lepton flavor violation (CLFV) is a smoking-gun signature of physics beyond the Standard Model. The discovery of CLFV in upcoming experiments would indicate that CLFV processes must have been efficient in the early Universe at relatively low temperatures. We have pointed out that such efficient CLFV interactions open up new ways of creating the baryon asymmetry of the Universe. In this talk, I will describe two scenarios of what we call leptoflavorgenesis, where efficient CLFV processes are responsible for the generation of primordial lepton flavor asymmetries that are subsequently converted to a baryon asymmetry by weak sphaleron processes.

      Speaker: Masaki Yamada
    • 8:00 PM 9:00 PM
      Predicting the PBH mass spectrum 1h
      Speaker: Misao Sasaki
    • 9:00 PM 10:00 PM
      The poltergeist mechanism 1h
      Speaker: Kaz Kohri
    • 10:00 PM 10:30 PM
      Break 30m
    • 10:30 PM 11:30 PM
      Was There an Electroweak Phase Transition? (Cancelled) 1h
      Speaker: Michael Ramsey-Musolf
    • 11:30 PM 12:30 AM
      Fermion asymmetries and dark matter in the form of primordial black holes 1h
      Speaker: Marcos M. Flores
    • 12:30 AM 1:30 AM
      Gravitational Wave Probes of Axion Rotations Responsible for Dark Matter and Baryon Asymmetry 1h

      We established a paradigm where the (QCD) axion’s novel cosmological evolution, a rotation in the field space, gives rise to dark matter and the baryon asymmetry. The axion rotations also provide a natural origin for a kination era, where the total energy density is dominated by the kinetic term of the axion field, preceded by an early era of matter domination. We investigate the effects of this cosmological scenario on the spectrum of possible primordial gravitational waves from inflation or cosmic strings and find that the spectrum features a triangular peak. As a result, future gravitational wave observations can probe the viable parameter space of kination, including regions that produce axion dark matter by the kinetic misalignment mechanism or the baryon asymmetry by axiogenesis.

      Speaker: Raymond Co
    • 1:30 AM 2:30 AM
      Baryogenesis from $SU(2)_R$ phase transition 1h
      Speaker: Isaac Wang
    • 2:30 AM 3:30 AM
      Discussion 1h