View count: 63

Projects

 
　 Supervisor Affiliation Title & Abstract Student
1 Cheng-Wei Chiang
email: chengwei@phys.ntu.edu.tw		 NTU  Title: An updated global fit to the Georgi-Machacek model 邱柏舜
　 　 　 Abstract: Utilizing the state-of-art packages, HEPfit and HiggsTools, we scan the parameter space of the Georgi-Machacek model using theory constraints and the latest data. Using the allowed points, we make predictions for various physical processes, including the di-HIggs production at the LHC and the h -> Z gamma decay branching ratio, for further comparison with future experimental probes. Provided time allows, we will identify points that permit sufficiently strong electroweak phase transitions and compute the corresponding gravitational wave power spectrum. 　
2 Chian-Shu Chen
email:
chianshu@gmail.com		 TKU Title: Interplay between neutrino mass generation and dark matter 葉育辰
　 　 　 Abstract: It is well known that masses of charged fermions and gauge bosons in standard model are generated via the interaction with Higgs particle, however, the mechanism of neutrino masses generation is still mysterious. On the other hand, about 25% of energy density of the universe is composed by the so-called dark matter (DM). We know very little about the properties of DM, and it is equally mysterious. Both neutrino and DM are electrically neutral and weakly interact with ordinary particles, would it be a hint that the two mysterious particles intimate with each other ? In this summer project, we would like to investigate the possibility of neutrino mass generation via DM and try to pin down their particle features. 　
3 Po-Yen Tseng
email: pytseng@phys.nthu.edu.tw		 NTHU Title: Constraining neutrino-DM interactions with Milky Way dwarf spheroidals 劉崇佑
　 　 　 Abstract: We consider the dark matter (DM) density profile of Milky Way dwarf spheroidals. The cusped DM profile would transform into a flatter profile, i.e. cored profile, with additional energy injected into the system, and several possibilities have been discussed in the literature. In PRD 110 (2024) 2, 023004, diffused supernova neutrino background (DSNB) provides high-energy neutrinos which are conducted into the dwarf spheroidal via the neutrino-DM interaction. However, the observational data, giving an upper limit of dwarf galaxy DM subhalo core size, would constrain the strength of neutrino-DM interaction. Furthermore, one can apply this method to constrain the relic abundance of primordial black holes (PBHs), since PBHs emit neutrinos through Hawking radiation. During this project, the student is firstly required to calculate the energy needed for the transformation from cusped to cored DM profile by using the virial theorem. On the other hand, the amount of energy can be injected from the aforementioned sources, which would relate to the kinematic of neutrino-DM scattering. If time is allowed, one can adopt the observational data and put bounds on PBH relic abundance and neutrino-DM interaction.