Proposal for a shared transverse LLP detector for FCC-ee and FCC-hh and a forward LLP detector for FCC-hh

Posted by klaurent This Week: Astrophysics, Tokyo

Kavli Affiliate: Shigeki Matsumoto | First 5 Authors: Biplob Bhattacherjee, Camellia Bose, Herbi K. Dreiner, Nivedita Ghosh, Shigeki Matsumoto | Summary: As the particle physics community has explored most of the conventional avenues for new physics, the more elusive areas are becoming increasingly appealing. One such potential region, where new physics might be hiding, involves […]


Continue.. Proposal for a shared transverse LLP detector for FCC-ee and FCC-hh and a forward LLP detector for FCC-hh

Timing-injection locking in a self-starting Mamyshev oscillator induced by the dissipative Faraday instability

Posted by klaurent This Week: Astrophysics, Tokyo

Kavli Affiliate: Jia Liu | First 5 Authors: Changqing Li, Ran Xia, Yutai Zhao, Yifang Li, Jia Liu | Summary: Mamyshev oscillators (MOs), a novel class of passively mode-locked fiber lasers, serve as an excellent platform to explore complex nonlinear dynamics, ranging from localized sturctures to chaos. Despite their versatility, achieving self-starting mode-locking remains a […]


Continue.. Timing-injection locking in a self-starting Mamyshev oscillator induced by the dissipative Faraday instability

Testing small-scale modifications in the primordial power spectrum with Subaru HSC cosmic shear, primary CMB and CMB lensing

Posted by klaurent This Week: Astrophysics, Tokyo

Kavli Affiliate: Masahiro Takada | First 5 Authors: Ryo Terasawa, Masahiro Takada, Sunao Sugiyama, Toshiki Kurita, | Summary: Different cosmological probes, such as primary cosmic microwave background (CMB) anisotropies, CMB lensing, and cosmic shear, are sensitive to the primordial power spectrum (PPS) over different ranges of wavenumbers. In this paper, we combine the cosmic shear […]


Continue.. Testing small-scale modifications in the primordial power spectrum with Subaru HSC cosmic shear, primary CMB and CMB lensing

Backlighting extended gas halos around luminous red galaxies: kinematic Sunyaev-Zel’dovich effect from DESI Y1 x ACT

Posted by dbos Tokyo

Kavli Affiliate: David N. Spergel | First 5 Authors: Bernardita Ried Guachalla, Emmanuel Schaan, Boryana Hadzhiyska, Simone Ferraro, Jessica N. Aguilar | Summary: The gas density profile around galaxies, shaped by feedback and affecting the galaxy lensing signal, is imprinted on the cosmic microwave background (CMB) by the kinematic Sunyaev-Zel’dovich effect (kSZ). We precisely measure […]


Continue.. Backlighting extended gas halos around luminous red galaxies: kinematic Sunyaev-Zel’dovich effect from DESI Y1 x ACT

Dip and non-linearity in the curvature perturbation from inflation with a transient non-slow-roll stage

Posted by dbos Tokyo

Kavli Affiliate: Misao Sasaki | First 5 Authors: Tomohiro Fujita, Ryodai Kawaguchi, Misao Sasaki, Yuichiro Tada, | Summary: We consider models of inflation that contain a transient non-slow-roll stage and investigate the conditions under which a dip appears in the power spectrum of the curvature perturbation. Using the $delta N$ formalism, we derive a general […]


Continue.. Dip and non-linearity in the curvature perturbation from inflation with a transient non-slow-roll stage

Singular instantons with finite action

Posted by dbos Tokyo

Kavli Affiliate: Misao Sasaki | First 5 Authors: Misao Sasaki, Vicharit Yingcharoenrat, Ying-li Zhang, , | Summary: Recently, it was shown that in the absence of gravity there exist non-$O(4)$-symmetric instanton solutions with finite action beyond Coleman’s instantons. In this paper, focusing on the false-vacuum decay in a single scalar field in flat Euclidean space, […]


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Measurements of the branching fractions of $Ξ_{c}^{+}to Σ^{+}K_{S}^{0}$, $Ξ_{c}^{+}to Ξ^{0}π^{+}$, and $Ξ_{c}^{+}to Ξ^{0}K^{+}$ at Belle and Belle II

Posted by klaurent Tokyo

Kavli Affiliate: T. Higuchi | First 5 Authors: Belle, Belle II Collaborations, :, I. Adachi, J. K. Ahn | Summary: Using 983.0 $rm{fb}^{-1}$ and 427.9 $rm{fb}^{-1}$ data samples collected with the Belle and Belle II detectors at the KEKB and SuperKEKB asymmetric energy $e^+e^-$ colliders, respectively, we present studies of the Cabibbo-favored $Xi_c^+$ decays ${Xi_{c}^{+}to […]


Continue.. Measurements of the branching fractions of $Ξ_{c}^{+}to Σ^{+}K_{S}^{0}$, $Ξ_{c}^{+}to Ξ^{0}π^{+}$, and $Ξ_{c}^{+}to Ξ^{0}K^{+}$ at Belle and Belle II

The Atacama Cosmology Telescope: DR6 Power Spectra, Likelihoods and $Λ$CDM Parameters

Posted by dbos Tokyo

Kavli Affiliate: Toshiya Namikawa | First 5 Authors: Thibaut Louis, Adrien La Posta, Zachary Atkins, Hidde T. Jense, Irene Abril-Cabezas | Summary: We present power spectra of the cosmic microwave background (CMB) anisotropy in temperature and polarization, measured from the Data Release 6 maps made from Atacama Cosmology Telescope (ACT) data. These cover 19,000 deg$^2$ […]


Continue.. The Atacama Cosmology Telescope: DR6 Power Spectra, Likelihoods and $Λ$CDM Parameters

Stringent Constraints on Self-Interacting Dark Matter Using Milky-Way Satellite Galaxies Kinematics

Posted by dbos Tokyo

Kavli Affiliate: Satoshi Shirai | First 5 Authors: Shin’ichiro Ando, Kohei Hayashi, Shunichi Horigome, Masahiro Ibe, Satoshi Shirai | Summary: Self-interacting dark matter (SIDM) has been proposed to address small-scale challenges faced by the cold dark matter (CDM) paradigm, such as the diverse density profiles observed in dwarf galaxies. In this study, we analyze the […]


Continue.. Stringent Constraints on Self-Interacting Dark Matter Using Milky-Way Satellite Galaxies Kinematics