High Energy Physics Seminar next Thursday - Sen

[HECAP - Margherita Di Giovannantonio]

*_HIGH ENERGY PHYSICS SEMINARS_**__*

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*Thursday, 26 February *2026, at *16:00* - _*L. Stasi Seminar 
Room*_**-*https://indico.ictp.it/event/11288/*


<https://indico.ictp.it/event/11240/>

Manibrata Sen (Indian Institute of Technology Bombay)


*“Probing Dynamic Masses of Neutrinos Using the Diffuse Supernova 
Neutrino Background"*
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_Abstract_

Neutrino masses may have evolved dynamically throughout the history of 
the Universe, potentially leading to a mass spectrum distinct from the 
normal or inverted ordering observed today. While cosmological 
measurements constrain the total energy density of neutrinos, they are 
not directly sensitive to a dynamically changing mass ordering unless 
future surveys achieve exceptional precision in detecting the distinct 
imprints of each mass eigenstate on large-scale structures. In this 
talk, I will discuss the impact of a dynamic neutrino mass spectrum on 
the diffuse supernova neutrino background (DSNB), which is composed of 
neutrinos from all supernova explosions throughout cosmic history and is 
on the verge of experimental detection. Since neutrino oscillations are 
highly sensitive to the mass spectrum, the electron neutrino survival 
probability carries distinct signatures of the evolving neutrino mass 
spectrum. I will point out that the resulting modifications to the DSNB 
spectrum could exhibit unique energy-dependent features. These features 
are distinguishable from the effects of significant astrophysical 
uncertainties, providing a potential avenue for probing the dynamic 
nature of neutrino masses.



To attend via _*Zoom*_, please *_register_* here:
<https://zoom.us/meeting/register/8ICZuERWQWqc-5M-K1fdAQ>https://zoom.us/meeting/register/HYEKkgp9QUK7pQJt1XvG1Q<https://zoom.us/meeting/register/t2m4Xw8DSUWeAz9LB1phGg>