5 papers
Bipartite Solution to the Lithium Problem
Sougata Ganguly, Tae Hyun Jung, Tae-Sun Park +1
The primordial lithium problem remains a persistent motivation for new-physics modifications of Big Bang nucleosynthesis, yet the precision of the observed deuterium abundance now…
Revisiting QCD-induced little inflation with chiral density wave state and its implications on pulsar timing array gravitational-wave signals
Tae Hyun Jung, Seyong Kim, Jong-Wan Lee +2
We revisit QCD-induced little inflation in which the Universe begins with a large baryon chemical potential and undergoes a strong first-order QCD phase transition, generating an o…
Probing Heavy Dark Matter in Red Giants
Sougata Ganguly, Minxi He, Chang Sub Shin +2
Red giants (RGs) provide a promising astrophysical environment for capturing dark matter (DM) via elastic scattering with stellar nuclei. Captured DM particles migrate toward the h…
Revisiting Reactor Anti-Neutrino 5 MeV Bump with C Neutral-Current Interaction
Pouya Bakhti, Min-Gwa Park, Meshkat Rajaee +2
For the first time, we comprehensively examine the potential of a neutral-current interaction of reactor neutrino with C emitting a 3.685 MeV photon to identify the origin o…
Constraining MeV to 10 GeV majoron by Big Bang Nucleosynthesis
Sanghyeon Chang, Sougata Ganguly, Tae Hyun Jung +2
We estimate the Big Bang nucleosynthesis (BBN) constraint on the majoron in the mass range between to which dominantly decays into the standard model…