109 citations · 560 across the 28 of their papers we have counts for
28 papers
Direct measurement of the in-medium mass spectrum through the decay channel
Y. Matsumura, N. Muramatsu, T. A. Hashimoto +58
We measured the invariant mass of the meson through the decay channel to search for possible character change of in a nuclear mediu…
First Measurement of Missing Energy Due to Nuclear Effects in Monoenergetic Neutrino Charged Current Interactions
E. Marzec, S. Ajimura, A. Antonakis +80
We present the first measurement of the missing energy due to nuclear effects in monoenergetic, muon neutrino charged-current interactions on carbon, originating from $K^+ \rightar…
Commissioning of a compact multibend achromat lattice: A new 3 GeV synchrotron radiation facility
Shuhei Obara, Kota Ueshima, Takao Asaka +79
NanoTerasu, a new 3 GeV synchrotron light source in Japan, began user operation in April 2024. It provides high-brilliance soft to tender X-rays and covers a wide spectral range fr…
Measurement of the mesonic decay branch of the quasi-bound state
T. Yamaga, S. Ajimura, H. Asano +67
We conducted measurements of reactions using a -beam, with the objective of understanding the broad decay width of $\bar…
The acrylic vessel for JSNS-II neutrino target
C. D. Shin, S. Ajimura, M. K. Cheoun +57
The JSNS (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) is an experiment designed for the search for sterile neutrinos. The experiment is currently at t…
Study on the accidental background of the JSNS experiment
D. H. Lee, S. Ajimura, M. K. Cheoun +55
JSNS (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) is an experiment which searches for sterile neutrinos via the observation of a…
Pole position of measured in reactions
PARC E31 Collaboration, S. Aikawa, S. Ajimura +74
We measured a set of , , and invariant mass spectra below and above the mass threshold in -induced reactions on deuteron. We deduced th…
Differential cross sections and photon beam asymmetries of photoproduction on the proton at = 1.3-2.4 GeV
T. Hashimoto, T. Nam, N. Muramatsu +57
We have carried out exclusive measurements for the photoproduction of an meson from a proton target with an egg-shaped calorimeter made of BGO crystals (BGOegg) and forward cha…
SPring-8 LEPS2 beamline: A facility to produce a multi-GeV photon beam via laser Compton scattering
N. Muramatsu, M. Yosoi, T. Yorita +48
We have constructed a new laser-Compton-scattering facility, called the LEPS2 beamline, at the 8-GeV electron storage ring, SPring-8. This facility provides a linearly polarized ph…
Characterization of the correlated background for a sterile neutrino search using the first dataset of the JSNS experiment
Y. Hino, S. Ajimura, M. K. Cheoun +62
JSNS (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) is an experiment that is searching for sterile neutrinos via the observation of $\barν_μ \to \barν_{e}…
The JSNS^2 Detector
S. Ajimura, M. Botran, J. H. Choi +63
The JSNS^2 (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) experiment aims to search for oscillations involving a sterile neutrino in the eV^2 mass-splitting r…
Observation of a bound state in the reaction
T. Yamaga, S. Ajimura, H. Asano +66
We have performed an exclusive measurement of the reaction at an incident kaon momentum of .In the invariant mass spectrum, a…
Search for bound nuclei in the reaction with simultaneous detection of decay products
N. Tomida, N. Muramatsu, M. Niiyama +60
We measured missing mass spectrum of the reaction for the first time in coincidence with potential decay products from bound nuclei. We tagged an () p…
Performance of PMTs for the JSNS2 experiment
J. S. Park, H. Furuta, T. Maruyama +58
The JSNS (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) experiment aims to search for neutrino oscillations over a 24\,m short baseline at J-PARC. The J…
Slow control and monitoring system at the JSNS
J. S. Park, S. Ajimura, M. Botran +59
The JSNS experiment is aimed to search for sterile neutrino oscillations using a neutrino beam from muon decays at rest. The JSNS detector contains 17 tons of 0.1\% gadolin…
"", a -Meson Nuclear Bound State, Observed in Reactions
PARC E15 collaboration, S. Ajimura, H. Asano +67
We observed a distinct peak in the invariant mass spectrum of , well below the mass threshold of . By selecting a relatively large mome…
First measurement of coherent -meson photoproduction from helium-4 near threshold
LEPS Collaboration, T. Hiraiwa, M. Yosoi +42
The differential cross sections and decay angular distributions for coherent -meson photoproduction from helium-4 have been measured for the first time at forward angles with li…
photoproduction on the proton at = 1.5 - 2.9 GeV
K. Mizutani, M. Niiyama, T. Nakano +53
Differential cross sections at and decay asymmetries for the reaction have been measured using linearly polarized photons in the range 1.5 to 2…
Status Report (22th J-PARC PAC): Searching for a Sterile Neutrino at J-PARC MLF (E56, JSNS2)
M. Harada, S. Hasegawa, Y. Kasugai +34
The JSNS (J-PARC E56) experiment aims to search for a sterile neutrino at the J-PARC Materials and Life Sciences Experimental Facility (MLF). After the submission of a proposal…
Structure near ++ threshold in the in-flight He reaction
PARC E15 Collaboration, Y. Sada, S. Ajimura +69
To search for an S= -1 di-baryonic state which decays to , the reaction was studied at 1.0 GeV/. Unobserved neutrons were kinematically ide…
On-site Background Measurements for the J-PARC E56 Experiment: A Search for Sterile Neutrino at J-PARC MLF
S. Ajimura, T. J. C. Bezerra, E. Chauveau +22
The J-PARC E56 experiment aims to search for sterile neutrinos at the J-PARC Materials and Life Science Experimental Facility (MLF). In order to examine the feasibility of the expe…
Measurement of the strong interaction induced shift and width of the 1s state of kaonic deuterium at J-PARC
J. Zmeskal, M. Sato, S. Ajimura +74
The antikaon-nucleon interaction close to threshold provides crucial information on the interplay between spontaneous and explicit chiral symmetry breaking in low-energy QCD. In th…
Search for the deeply bound state from the semi-inclusive forward-neutron spectrum in the in-flight reaction on helium-3
Tadashi Hashimoto, Shuhei Ajimura, George Beer +64
An experiment to search for the bound state was performed via the in-flight He( reaction using 5.3 kaons at 1 GeV/ at the J-PARC hadron exper…
Proposal: A Search for Sterile Neutrino at J-PARC Materials and Life Science Experimental Facility
M. Harada, S. Hasegawa, Y. Kasugai +25
We propose a definite search for sterile neutrinos at the J-PARC Materials and Life Science Experimental Facility (MLF). With the 3 GeV Rapid Cycling Synchrotron (RCS) and spallati…