31 citations · 39 across the 8 of their papers we have counts for
8 papers
Improved measurements of neutron lifetime with cold neutron beam at J-PARC
Y. Fuwa, T. Hasegawa, K. Hirota +28
The ``neutron lifetime puzzle'' arises from the discrepancy between neutron lifetime measurements obtained using the beam method, which measures decay products, and the bottle meth…
Superconducting detector magnets for high energy physics
Matthias Mentink, Ken-ichi Sasaki, Benoit Cure +11
Various superconducting detector solenoids for particle physics have been developed in the world. The key technology is the aluminum-stabilized superconducting conductor for almost…
Precise Neutron Lifetime Measurement Using Pulsed Neutron Beams at J-PARC
N. Sumi, K. Hirota, G. Ichikawa +18
A neutron decays into a proton, an electron, and an anti-neutrino through the beta-decay process. The decay lifetime (880 s) is an important parameter in the weak interaction…
Measurement of rays from LiF tile as an inner wall of a neutron-decay detector
J. Koga, S. Ieki, A. Kimura +12
A neutron lifetime measurement conducted at the Japan Proton Accelerator Research Complex (J-PARC) is counting the number of electrons from neutron decays with a time projection ch…
Improved determination of thermal cross section of 14N(n,p)14C for the neutron lifetime measurement
R. Kitahara, K. Hirota, S. Ieki +21
In a neutron lifetime measurement at the Japan Proton Accelerator Complex, the neutron lifetime is calculated by the neutron decay rate and the incident neutron flux. The flux is o…
Fundamental physics activities with pulsed neutron at J-PARC(BL05)
Kenji Mishima, Shogo Awano, Yasuhiro Fuwa +37
"Neutron Optics and Physics (NOP/ BL05)" at MLF in J-PARC is a beamline for studies of fundamental physics. The beamline is divided into three branches so that different experiment…
Precise Neutron Lifetime Measurement with a Solenoidal Coil
Naoyuki Sumi, Hidetoshi Otono, Tamaki Yoshioka +2
The neutron lifetime, = 880.2 1.0 sec , is an important parameter for particle physics and cosmology. There is, however, an 8.4 sec (4.0) deviation between the measu…
Precise neutron lifetime experiment using pulsed neutron beams at J-PARC
Naoki Nagakura, Katsuya Hirota, Sei Ieki +22
The neutron lifetime is one of the basic parameters in the weak interaction, and is used for predicting the light element abundance in the early universe. Our group developed a new…