380 citations · 2.4k across the 61 of their papers we have counts for
62 papers
Smooth velocity shuttling for suppressing valley excitations in disordered Si/SiGe quantum dots
Ryo Nagai, Takashi Takemoto, Hiroyuki Mizuno
Coherent electron shuttling is a key requirement for realizing scalable silicon quantum computing architectures. However, in silicon qubits, the existence of nearly degenerate cond…
The IceCube-Gen2 Collaboration -- Contributions to the 38th International Cosmic Ray Conference (ICRC2023)
IceCube-Gen2, :, R. Abbasi +452
IceCube-Gen2 is a planned next-generation neutrino observatory at the South Pole that builds upon the successful design of IceCube. Integrating two complementary detection technolo…
Anapole Moment of Majorana Fermions and Implications for Direct Detection of Neutralino Dark Matter
Alejandro Ibarra, Merlin Reichard, Ryo Nagai
For Majorana fermions the anapole moment is the only allowed electromagnetic multipole moment. In this work we calculate the anapole moment induced at one-loop by the Yukawa and ga…
Electroweak phase transition in the nearly aligned Higgs effective field theory
Shinya Kanemura, Ryo Nagai, Masanori Tanaka
We investigate the strongly first-order electroweak phase transition using an effective field theoretical approach. The standard effective field theory with finite number truncatio…
A new Higgs effective field theory and the new no-lose theorem
Shinya Kanemura, Ryo Nagai
Non-decoupling effects of heavy new particles cannot be described by the standard effective field theory with finite truncation of higher dimensional operators. We propose a new ef…
A Time-Variability Test for Candidate Neutrino Sources Observed with IceCube
Pranav Dave
Recent studies with IceCube have shown signs of a time-integrated flux of astrophysical neutrinos from point-like sources such as TXS 0506+056 and NGC 1068. Time-variability of thi…
CP-Violation in a Composite 2-Higgs Doublet Model
Stefania De Curtis, Stefano Moretti, Ryo Nagai +1
We study CP-Violation (CPV) in a Composite 2-Higgs Doublet Model (C2HDM) based on the global symmetry breaking , wherein the strong sector is modeled by…
A muon-track reconstruction exploiting stochastic losses for large-scale Cherenkov detectors
R. Abbasi, M. Ackermann, J. Adams +362
IceCube is a cubic-kilometer Cherenkov telescope operating at the South Pole. The main goal of IceCube is the detection of astrophysical neutrinos and the identification of their s…
Scalar and fermion on-shell amplitudes in generalized Higgs effective field theory
Ryo Nagai, Masaharu Tanabashi, Koji Tsumura +1
Beyond standard model (BSM) particles should be included in effective field theory in order to compute the scattering amplitudes involving these extra particles. We formulate an ex…
IceCube Data for Neutrino Point-Source Searches Years 2008-2018
IceCube Collaboration, R. Abbasi, M. Ackermann +370
IceCube has performed several all-sky searches for point-like neutrino sources using track-like events, including a recent time-integrated analysis using 10 years of IceCube data.…
A Convolutional Neural Network based Cascade Reconstruction for the IceCube Neutrino Observatory
R. Abbasi, M. Ackermann, J. Adams +364
Continued improvements on existing reconstruction methods are vital to the success of high-energy physics experiments, such as the IceCube Neutrino Observatory. In IceCube, further…
LeptonInjector and LeptonWeighter: A neutrino event generator and weighter for neutrino observatories
R. Abbasi, M. Ackermann, J. Adams +362
We present a high-energy neutrino event generator, called LeptonInjector, alongside an event weighter, called LeptonWeighter. Both are designed for large-volume Cherenkov neutrino…
Measurement of the high-energy all-flavor neutrino-nucleon cross section with IceCube
R. Abbasi, M. Ackermann, J. Adams +361
The flux of high-energy neutrinos passing through the Earth is attenuated due to their interactions with matter. The interaction rate is modulated by the neutrino interaction cross…
The IceCube high-energy starting event sample: Description and flux characterization with 7.5 years of data
R. Abbasi, M. Ackermann, J. Adams +362
The IceCube Neutrino Observatory has established the existence of a high-energy all-sky neutrino flux of astrophysical origin. This discovery was made using events interacting with…
Direct detection of vector dark matter through electromagnetic multipoles
Junji Hisano, Alejandro Ibarra, Ryo Nagai
Dark matter particles, even if they are electrically neutral, could interact with the Standard Model particles via their electromagnetic multipole moments. In this paper, we focus…
Lepton flavor violations in SUSY models for muon with right-handed neutrinos
Ryo Nagai, Norimi Yokozaki
We consider supersymmetric (SUSY) models for the muon anomaly without flavor violating masses at the tree-level. The models can avoid LHC constraints and the vacuum stability…
Searching for eV-scale sterile neutrinos with eight years of atmospheric neutrinos at the IceCube neutrino telescope
M. G. Aartsen, R. Abbasi, M. Ackermann +373
We report in detail on searches for eV-scale sterile neutrinos, in the context of a 3+1 model, using eight years of data from the IceCube neutrino telescope. By analyzing the recon…
An eV-scale sterile neutrino search using eight years of atmospheric muon neutrino data from the IceCube Neutrino Observatory
M. G. Aartsen, R. Abbasi, M. Ackermann +373
The results of a 3+1 sterile neutrino search using eight years of data from the IceCube Neutrino Observatory are presented. A total of 305,735 muon neutrino events are analyzed in…
IceCube Search for Neutrinos Coincident with Compact Binary Mergers from LIGO-Virgo's First Gravitational-Wave Transient Catalog
M. G. Aartsen, M. Ackermann, J. Adams +374
Using the IceCube Neutrino Observatory, we search for high-energy neutrino emission coincident with compact binary mergers observed by the LIGO and Virgo gravitational wave (GW) de…
Machine Learning Exchange-Correlation Potential in Time Dependent Density Functional Theory
Yasumitsu Suzuki, Ryo Nagai, Jun Haruyama
We propose a machine learning based approach to develop the exchange-correlation potential of time dependent density functional theory (TDDFT). The neural network projection from t…
ANTARES and IceCube Combined Search for Neutrino Point-like and Extended Sources in the Southern Sky
ANTARES Collaboration, A. Albert, M. André +498
A search for point-like and extended sources of cosmic neutrinos using data collected by the ANTARES and IceCube neutrino telescopes is presented. The data set consists of all the…
A search for IceCube events in the direction of ANITA neutrino candidates
IceCube Collaboration, M. G. Aartsen, M. Ackermann +357
During the first three flights of the Antarctic Impulsive Transient Antenna (ANITA) experiment, the collaboration detected several neutrino candidates. Two of these candidate event…
Searches for neutrinos from cosmic-ray interactions in the Sun using seven years of IceCube data
IceCube Collaboration, M. G. Aartsen, M. Ackermann +358
Cosmic-ray interactions with the solar atmosphere are expected to produce particle showers which in turn produce neutrinos from weak decays of mesons. These solar atmospheric neutr…
Constraints on Neutrino Emission from Nearby Galaxies Using the 2MASS Redshift Survey and IceCube
IceCube Collaboration, M. G. Aartsen, M. Ackermann +354
The distribution of galaxies within the local universe is characterized by anisotropic features. Observatories searching for the production sites of astrophysical neutrinos can tak…