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Technical Proposal for FASER: ForwArd Search ExpeRiment at the LHC
FASER Collaboration, Akitaka Ariga, Tomoko Ariga +33
FASER is a proposed small and inexpensive experiment designed to search for light, weakly-interacting particles during Run 3 of the LHC from 2021-23. Such particles may be produced…
Letter of Intent for FASER: ForwArd Search ExpeRiment at the LHC
FASER Collaboration, Akitaka Ariga, Tomoko Ariga +12
FASER is a proposed small and inexpensive experiment designed to search for light, weakly-interacting particles at the LHC. Such particles are dominantly produced along the beam co…
FASER's Physics Reach for Long-Lived Particles
FASER Collaboration, Akitaka Ariga, Tomoko Ariga +25
FASER,the ForwArd Search ExpeRiment,is a proposed experiment dedicated to searching for light, extremely weakly-interacting particles at the LHC. Such particles may be produced in…
Accurate determination of the absolute 3He/4He ratio of a synthesized helium standard gas (Helium Standard of Japan, HESJ): Towards revision of the atmospheric 3He/4He ratio
Kenji Mishima, Hirochika Sumino, Takahito Yamada +4
The helium standard of Japan, referred to as HESJ, is an inter-laboratory standard for the 3He/4He ratio. While the ratio of 3He and 4He of the HESJ was previously determined by a…
Looking for the left sneutrino LSP with displaced-vertex searches
Inaki Lara, Daniel E. Lopez-Fogliani, Carlos Munoz +3
We analyze a displaced dilepton signal expected at the LHC for a tau left sneutrino as the lightest supersymmetric particle with a mass in the range - GeV. The sneutrinos…
Searching for Metastable Particles with Sub-Millimeter Displaced Vertices at Hadron Colliders
Hayato Ito, Osamu Jinnouchi, Takeo Moroi +2
A variety of new-physics models predict metastable particles whose decay length is mm. Conventional displaced-vertex searches are less sensitive to this sub-millimeter…
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…