Kavli Affiliate: T. Higuchi | First 5 Authors: Belle II Collaboration, I. Adachi, K. Adamczyk, L. Aggarwal, H. Ahmed | Summary: We report on a search for a resonance $X$ decaying to a pair of muons in $e^{+}e^{-}rightarrow mu^+ mu^- X$ events in the 0.212-9.000 GeV/$c^{2}$ mass range, using 178 fb$^{-1}$ of data collected by […]
Kavli Affiliate: Shigeki Matsumoto | First 5 Authors: Yu-Tong Chen, Shigeki Matsumoto, Tian-Peng Tang, Yue-Lin Sming Tsai, Lei Wu | Summary: This study explores a minimal renormalizable dark matter (DM) model, incorporating a sub-GeV Majorana DM and a singlet scalar particle $phi$. Using scalar and pseudo-scalar interactions (couplings $c_s$ and $c_p$), we investigate implications for […]
Kavli Affiliate: Shigeki Matsumoto | First 5 Authors: Yu-Tong Chen, Shigeki Matsumoto, Tian-Peng Tang, Yue-Lin Sming Tsai, Lei Wu | Summary: This study explores a minimal renormalizable dark matter (DM) model, incorporating a sub-GeV Majorana DM and a singlet scalar particle $phi$. Using scalar and pseudo-scalar interactions (couplings $c_s$ and $c_p$), we investigate implications for […]
Kavli Affiliate: T. Higuchi | First 5 Authors: Belle II Collaboration, I. Adachi, L. Aggarwal, H. Ahmed, H. Aihara | Summary: We report a measurement of decay-time dependent charge-parity ($CP$) asymmetries in $B^0 rightarrow K^0_S K^0_S K^0_S$ decays. We use $387 times 10^6 Bbar{B}$ pairs collected at the $Upsilon(4S)$ resonance with the Belle II detector […]
Kavli Affiliate: Masahiro Kawasaki | First 5 Authors: Shinta Kasuya, Masahiro Kawasaki, Naomi Tsuji, , | Summary: We study the supersymmetric Q balls which decay at present and find that they create a distinctive spectrum of gamma rays at around O(10) MeV. The charge of the Q ball is lepton numbers in order for the […]
Kavli Affiliate: Masahiro Kawasaki | First 5 Authors: Shinta Kasuya, Masahiro Kawasaki, Naomi Tsuji, , | Summary: We study the supersymmetric Q balls which decay at present and find that they create a distinctive spectrum of gamma rays at around O(10) MeV. The charge of the Q ball is lepton numbers in order for the […]
Kavli Affiliate: Masahiro Kawasaki | First 5 Authors: Shinta Kasuya, Masahiro Kawasaki, Naomi Tsuji, , | Summary: We study the supersymmetric Q balls which decay at present and find that they create a distinctive spectrum of gamma rays at around O(10) MeV. The charge of the Q ball is lepton numbers in order for the […]
Kavli Affiliate: Misao Sasaki | First 5 Authors: Theodoros Papanikolaou, Xin-Chen He, Xiao-Han Ma, Yi-Fu Cai, Emmanuel N. Saridakis | Summary: We propose a new probe of primordial non-Gaussianities (NGs) through the observation of gravitational waves (GWs) induced by ultra-light ($M_{text{PBH}}< 10^{9}rm{g}$) primordial black holes (PBHs). Interestingly enough, the existence of primordial NG can leave […]
Kavli Affiliate: Misao Sasaki | First 5 Authors: Theodoros Papanikolaou, Xin-Chen He, Xiao-Han Ma, Yi-Fu Cai, Emmanuel N. Saridakis | Summary: We propose a new probe of primordial non-Gaussianities (NGs) through the observation of gravitational waves (GWs) induced by ultra-light ($M_{text{PBH}}< 10^{9}rm{g}$) primordial black holes (PBHs). Interestingly enough, the existence of primordial NG can leave […]
Kavli Affiliate: John D. Silverman | First 5 Authors: Junyao Li, John D. Silverman, Yue Shen, Marta Volonteri, Knud Jahnke | Summary: JWST is revealing a new remarkable population of high-redshift ($zgtrsim4$), low-luminosity Active Galactic Nuclei (AGNs) in deep surveys and detecting the host galaxy stellar light in the most luminous and massive quasars at […]