Zobrazeno 1 - 10
of 77
pro vyhledávání: '"Po Yan Tseng"'
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 9, Pp 1-18 (2024)
Abstract This study investigates the classical Higgs inflation model with a modified Higgs potential featuring a dip. We examine the implications of this modification on the generation of curvature perturbations, stochastic gravitational wave product
Externí odkaz:
https://doaj.org/article/79f942f7056340e895db9ab17d0078ca
Autor:
Jan Tristram Acuña, Po-Yan Tseng
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 8, Pp 1-41 (2023)
Abstract In this work, we assess the sensitivity reach of pulsar timing array (PTA) measurements to probe pointlike primordial black holes (PBHs), with an extended mass distribution, which originate from collapsed Fermi balls that are formed through
Externí odkaz:
https://doaj.org/article/c9035057f56f459891e87a2d544b5d2b
Autor:
Danny Marfatia, Po-Yan Tseng
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 4, Pp 1-14 (2023)
Abstract During a cosmological first-order phase transition in a dark sector, fermion dark matter particles χ can form macroscopic Fermi balls that collapse to primordial black holes (PBHs) under certain conditions. The evaporation of the PBHs produ
Externí odkaz:
https://doaj.org/article/d2a42f158ae84128ae8b6db677f8c5d3
Autor:
Danny Marfatia, Po-Yan Tseng
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 8, Pp 1-14 (2022)
Abstract Fermi balls produced in a cosmological first-order phase transition may collapse to primordial black holes (PBHs) if the fermion dark matter particles that comprise them interact via a sufficiently strong Yukawa force. We show that phase tra
Externí odkaz:
https://doaj.org/article/5744cbb7fe9d4c14a53ce6955d7ca9e1
Autor:
Danny Marfatia, Po-Yan Tseng
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 11, Pp 1-16 (2021)
Abstract Fermion dark matter particles can aggregate to form extended dark matter structures via a first-order phase transition in which the particles get trapped in the false vacuum. We study Fermi balls created in a phase transition induced by a ge
Externí odkaz:
https://doaj.org/article/f291bcca85c74dc6afd0024839abfcc9
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 4, Pp 1-17 (2021)
Abstract We investigate various search strategies for light vector boson X in O $$ \mathcal{O} $$ (10) MeV mass range using J/Ψ associated channels at BESIII and Belle II: (i) J/Ψ → η c X with 1010 J/Ψs at BESIII, (ii) J/Ψ(η c + X) + ℓ ℓ
Externí odkaz:
https://doaj.org/article/e9aba5936af147a198cc4e01666c9828
Autor:
Danny Marfatia, Po-Yan Tseng
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 2, Pp 1-17 (2021)
Abstract We study the stochastic background of gravitational waves which accompany the sudden freeze-out of dark matter triggered by a cosmological first order phase transition that endows dark matter with mass. We consider models that produce the me
Externí odkaz:
https://doaj.org/article/66e92b84745a4e7ead2bb9382df9f2b0
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 7, Pp 1-25 (2020)
Abstract An old neutron star (NS) may capture halo dark matter (DM) and get heated up by the deposited kinetic energy, thus behaving like a thermal DM detector with sensitivity to a wide range of DM masses and a variety of DM-quark interactions. Near
Externí odkaz:
https://doaj.org/article/c59f9c2a8af245d09f7ce7be5d9e974a
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 5, Pp 1-28 (2020)
Abstract Due to a recent more precise evaluation of V ud and V us , the unitarity condition of the first row in the Cabibbo-Kobayashi-Maskawa (CKM) matrix: |V ud | 2 +|Vus| 2 +|V ub | 2 = 0.99798 ± 0.00038 now stands at a deviation more than 4σ fro
Externí odkaz:
https://doaj.org/article/a7fa1207bd534682b2aa8ca9e29f3d72
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 4, Pp 1-34 (2020)
Abstract We discuss a list of possible light gauge boson interpretations for the long- standing experimental anomaly in (g − 2) μ and also recent anomalous excess in K L → π 0 + (invisible) events at the J-PARC KOTO experiment. We consider two
Externí odkaz:
https://doaj.org/article/a67a420a36ae44e1b49950dcd0154835